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Mitsubishi Outlander 2013 Service Repair Manual
Group 0T Group 00 Group 11A Group 11B Group 12 Group 13A Group 13B Group 14 Group 15 Group 16 Group 17 Group 23A Group 23B Group 23C Group 25 Group 27A Group 27B Group 27C Group 31 Group 32 Group 33 Group 34 Group 35A Group 35B Group 35C Group 36 Group 37 Group 42A Group 42B Group 51 Group 52A Group 52B Group 54A Group 54B Group 54C Group 55 Group 70 Group 80 Group 90
Torque Specifications General Content & General Electrical Engine Mechanical Engine Overhaul Engine Lubrication Multipoint Fuel Injection Fuel Supply Engine Cooling Intake and Exhaust Engine Electrical Engine and Emission Control CVT CVT Overhaul Automatic Transaxle Propeller Shaft Rear Axle (2WD) Rear Axle (4WD) Electronically Controlled 4WD Wheel and Tyre Power Plant Mount Front Suspension Rear Suspension Basic Brake ABS ASC Parking Brakes Electric Power Steering (EPS) Body Keyless Operation System (KOS) Exterior Interior Supplemental Restraint System (SRS) Chassis Electrical Local Interconnect Network (LIN) Controller Area Network (CAN) Heater, AC and Ventilation Component Locations Configuration Diagrams Circuit Diagrams
TORQUE SPECIFICATIONS Item
N·m
Alternator and ignition system Idler pulley bolt
44 ± 8
Auto tensioner
22 ± 4
Crankshaft pulley centre bolt
210, 0 then 210
Alternator nut
44 ± 10
Alternator bolt
44 ± 10
Ignition coil bolt
10 ± 2
Spark plug
25 ± 5
Accessory bracket bolt
44 ± 8
Throttle body Vacuum pipe assembly bolt
11 ± 1
Throttle body bolt
9.5 ± 2.5
Manifold absolute pressure (MAP) sensor screw
4.0 ± 1.0
Solenoid valve screw
4.0 ± 1.0
Water pipe bolt
10 ± 2
Inlet manifold and fuel system Oil level gauge guide bolt
10 ± 2
Injector protector rear bolt
3.5 ± 1.5 then 20 ± 2
Delivery pipe bolt
3.5 ± 1.5 then 20 ± 2
Inlet manifold bolt and nut
3.5 ± 1.5 then 20 ± 2
Inlet manifold stay bolt
20 ± 2
Inlet manifold stay B bolt
20 ± 2
Inlet manifold stay C bolt
20 ± 2
Injector protector front bolt
3.5 ± 1.5 then 20 ± 2
Detonation sensor bolt
20 ± 2
Oil pressure switch
10 ± 2
Exhaust manifold Exhaust manifold cover bolt
8.0 ± 2.0
Exhaust manifold nut
49 ± 5
Exhaust manifold bracket bolt (Exhaust manifold side)
56 ± 8
Exhaust manifold bracket bolt (Cylinder block side)
41 ± 10
Crank angle sensor bolt
11 ± 1
Crank angle sensor cover bolt
11 ± 1
Oxygen sensor
44 ± 5
Water hose and pipe Water inlet fitting bolt
24 ± 3
Water outlet fitting bolt
24 ± 3
Thermostat housing bolt
24 ± 3
Engine hanger bolt
28 ± 8
Coolant temperature sensor
30 ± 9
Water pump bolt
24 ± 3
Water pipe nut
24 ± 3
Camshaft position sensor
11 ± 1
Oil pan and timing chain case Cylinder head cover bolt
3.0 ± 1.0 then 5.5 ± 0.5
Timing chain case bolt
10 ± 2
Timing chain case bolt
13 ± 1
Timing chain case bolt
24 ± 4
Oil pan bolt
10 ± 2
Oil pan bolt
31 ± 2
Air compressor bracket bolt
23 ± 6
Oil drain plug
39 ± 5
Oil filter
14 ± 2
PCV valve
2.5 ± 0.4
Engine support bracket assembly washer bolt
48 ± 6
Timing chain Inlet V.V.T. sprocket bolt
59 ± 5
Exhaust camshaft sprocket bolt
59 ± 5
Timing chain tensioner bolt
10 ± 2
Tensioner lever bolt
10 ± 2
Timing chain guide bolt
10 ± 2
Camshaft Oil feeder control valve (OCV) bolt
10 ± 2
Camshaft bearing cap bolt
12 ± 1
Front camshaft bearing cap bolt
17 ± 3 then 30 ± 2
Cylinder head and valves Cylinder head bolt
35 ± 2, +90° then +90°
Oil pump chain Drive plate bolt
40 then 130
Oil pump case bolt
26 ± 2
Oil pump sprocket bolt
23 ± 2
Oil pump tensioner lever bolt
10 ± 2
Oil pump chain guide bolt
10 ± 2
Ladder frame bolt
24 ± 2
Balancer chain Drive plate bolt
40 then 130
Balancer shaft module bolt
20, 44, 0, 20 then +135°
Balancer shaft chain tensioner bolt
10 ± 2
Lever tensioner bolt
10 ± 2
Balancer shaft chain guide bolt
10 ± 2
Ladder frame bolt
24 ± 2
Piston and connecting rod Connecting rod cap bolt
5.0, 20 then +90°
Crankshaft and cylinder block Crankshaft sensing ring bolt
11 ± 1
Bearing cap bolt
26.5 ± 2.0 then +45°
00-1
GROUP 00
GENERAL CONTENTS HOW TO USE THIS MANUAL. . . . . .
00-2
HOW TO USE TROUBLESHOOTING/INSPECTION SERVICE POINTS . . . . . . . . . . . . . . . . . . . . . . . 00-5 CONTENTS OF TROUBLESHOOTING . . . DIAGNOSIS FUNCTION. . . . . . . . . . . . . . .
00-5 00-7
HOW TO USE THE INSPECTION PROCEDURES ...................................... 00-8 CONNECTOR MEASUREMENT SERVICE POINTS ...................................... 00-9 CONNECTOR INSPECTION SERVICE POINTS ...................................... 00-10 INSPECTION SERVICE POINTS FOR A BLOWN FUSE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 00-11 HOW TO COPE WITH INTERMITTENT MALFUNCTIONS . . . . . . . . . . . . . . . . . . . .
00-12
HOW TO TREAT PAST TROUBLE . . . . . .
00-12
VEHICLE IDENTIFICATION . . . . . . . MODELS . . . . . . . . . . . . . . . . . . . . . . . . . . .
00-13 00-13
VEHICLE IDENTIFICATION NUMBER (CHASSIS NUMBER) . . . . . . . . . . . . . . . . . . . . . . . . . . 00-14 VEHICLE INFORMATION CODE PLATE. .
00-15
MANUFACTURER PLATE . . . . . . . . . . . . .
00-15
ENGINE MODEL STAMPING. . . . . . . . . . .
00-15
GENERAL DATA AND SPECIFICATIONS ................................. 00-16 PRECAUTIONS BEFORE SERVICE.
00-18
ABOUT THE DESCRIPTION OF THE IGNITION SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . . . 00-18 SUPPLEMENTAL RESTRAINT SYSTEM (SRS) ...................................... 00-19
VEHICLES WITH AIR CONDITIONER . . . .
00-19
MULTI USE TESTER (M.U.T.-III) SUB ASSEMBLY ...................................... 00-20 SERVICING ELECTRICAL SYSTEM . . . . .
00-21
HOW TO SHIFT LOCK FORCED RELEASE ......................................
00-21
HOW TO PERFORM CHASSIS NUMBER (CHASSIS NO.) WRITING FOR ENGINE-ECU, KOS-ECU AND ETACS-ECU . . . . . . . . . . . . . . . . . . . . . . . . 00-21 CODING LIST . . . . . . . . . . . . . . . . . . . . . . .
00-27
INITIALISATION PROCEDURE FOR LEARNING VALUE IN MPI ENGINE . . . . . . . . . . . . . . . 00-36 LEARNING PROCEDURE FOR IDLING IN MPI ENGINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 00-37 PRE-INSPECTION CONDITION . . . . . . . . .
00-37
PRECAUTIONS FOR INSTALLATION OF ON-VEHICLE RADIO TRANSMISSION EQUIPMENT ...................................... 00-37 ENGINE OILS . . . . . . . . . . . . . . . . . . . . . . .
00-38
FORM−IN−PLACE GASKET (FIPG) . . . . . .
00-38
BOLTS AND NUTS WITH STABILIZER FOR COEFFICIENT OF FRICTION. . . . . . . . . . .
00-39
APPLICATION OF ANTI-CORROSION AGENTS AND UNDERCOATS . . . . . . . . . . . . . . . . . . . . . . 00-39 VEHICLE WASHING . . . . . . . . . . . . . . . . . .
00-39
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) ................................. 00-39 SRS SERVICE PRECAUTIONS . . . . .
00-42
SUPPORT LOCATIONS FOR LIFTING AND JACKING . . . . . . . . . . . . . . . . . . . . . . 00-44 TOWING AND HOISTING. . . . . . . . . .
00-46
GENERAL
00-2
HOW TO USE THIS MANUAL
HOW TO USE THIS MANUAL M1001000103357
SCOPE OF MAINTENANCE, REPAIR AND SERVICING EXPLANATIONS This manual provides explanations, etc. concerning procedures for the inspection, maintenance, repair and servicing of the subject model.
ON-VEHICLE SERVICE "On-vehicle Service" is procedures for performing inspections and adjustments of particularly important locations with regard to the construction and for maintenance and servicing, but other inspection (for looseness, play, cracking, damage, etc.) must also be performed.
INSPECTION Under this title are presented inspection and checking procedures to be performed by using special tools and measuring instruments and by feeling, but, for actual maintenance and servicing procedures, visual inspections should always be performed as well.
DEFINITION OF TERMS STANDARD VALUE Indicates the value used as the standard for judging the quality of a part or assembly on inspection or the value to which the part or assembly is corrected and adjusted. It is given by tolerance.
LIMIT Shows the standard for judging the quality of a part or assembly on inspection and means the maximum or minimum value within which the part or assembly must be kept functionally or in strength. It is a value established outside the range of standard value.
REFERENCE VALUE Indicates the adjustment value prior to starting the work (presented in order to facilitate assembly and adjustment procedures, and so they can be completed in a shorter time).
DANGER, WARNING, AND CAUTION DANGER, WARNING, and CAUTION call special attention to a necessary action or to an action that must be avoided. The differences among DANGER, WARNING, and CAUTION are as follows: • If a DANGER is not followed, the result is severe bodily harm or even death. • If a WARNING is not followed, the result could be bodily injury. • If a CAUTION is not followed, the result could be damage to the vehicle, vehicle components or service equipment.
INDICATION OF TIGHTENING TORQUE Tightening torques (units: N⋅m) are set to take into account the central value and the allowable tolerance. The central value is the target value, and the allowable tolerance provides the checking range for tightening torques.
MODEL INDICATIONS The following abbreviations are used in this manual for identification of model types. 2000:Indicates models equipped with the 1,998 mL petrol engine. 2400:Indicates models equipped with the 2,360 mL petrol engine. 2WD:Indicates the 2-wheel drive vehicles. 4WD:Indicates the 4-wheel drive vehicles. A/C:Indicates the air conditioner. CVT: Indicates the continuously variable transmission. DOHC:Indicates an engine with the double overhead camshaft. INVECS: Indicates the (Mitsubishi) intelligent and innovative vehicles electronic control system. MIVEC:Indicates the Mitsubishi innovative valve timing and lift electronic control system. MPI:Indicates the multi point injection.
GENERAL
00-3
HOW TO USE THIS MANUAL
EXPLANATION OF MANUAL CONTENTS
Denotes tightening torque. For bolts and nuts which do not have a tightening torque listed, refer to the "Standard Parts tightening-torque Table"
Indicates the section title.
Indicates the group title.
Indicates the group number.
35A-19
Indicates the page number. Indicates procedures to be performed before the work in that section is started, and procedures to be performed after the work in that section is finished. Component diagram A diagram of the component parts is provided near the front of each section in order to give the reader a better understanding of the installed condition of component parts.
Mark N denotes nonreusable part.
Repair kit or parts sets are shown. (Only very frequently used parts are shown.)
>>A>B>A>A>B>A>A>A>A>A>B>C>B>A>A>B>C>E>D>C>B>A>A>A>B>D>E>C>C>B>A>A>B>C>A>A>A>B>A>A>B>A>A>A>C>B>A>A>B>C>B>A>A>B>B>A>B>A>C>C>C>B>B>A>C>C>B>B>A>A>B>C>C>C>B>B>A>A>B>C>A>A>B>A>B>A>B>B>A>A>A>B>A>A>A>B>C>D>D>E>F>G>H>I>J>A>B>C>D>E>F>G>H>I>J Drive mode indicator
ACC00021 AB
< High contrast meter>
FAIL-SAFE FUNCTION FAILURE DETECTION
Drive mode display
Warning display
ACC00022 AB
If a malfunction occurs in the electronically controlled 4WD system, either of the followings operates to alert you to check a diagnosis code. • The drive mode indicators flash simultaneously or alternately . • The drive mode display on the multi-information display flashes, and a message is shown on the warning display .
DIAGNOSTIC FUNCTION M1274000700134
HOW TO READ DIAGNOSIS CODE Refer to GROUP 00 − Diagnostic Function .
HOW TO ERASE DIAGNOSIS CODE
Start-up (Initial check just after the ignition switch is turned ON.) 1. CPU check • Performs the ROM and RAM check. 2. Actuator check • After CPU check has been completed, check the driving voltage with the actuator relay OFF. Always (During ignition ON status other than initial check operation) 1. CPU check • Performs CAN communication and interactive check between CPUs. 2. Power supply check • Monitors the CPU supply voltage and checks if the voltage is within specifications. 3. Actuator check • Checks if the actuator relay turns ON according to the control. • Compares the command current value from CPU with the monitored current and checks if they agree. 4. External wire connection check • Checks if the input and output of each external wire connection is open, shorted, or stuck.
FREEZE FRAME DATA REFERENCE TABLE
M1274001200080 Refer to GROUP 00 − Diagnostic Function . M.U.T-III can be used to read the freeze frame data (the driving status when the failure occurs) at each diagnosis code detection.
FREEZE FRAME DATA Item No.
Item
Unit/display contents
1
Odometer
km
4
Accumulated minute
min
5
AWC control mode (4WD control mode)
Mode 1 Mode 2 Mode 3 Mode 4
ELECTRONICALLY CONTROLLED 4WD
27C-8
TROUBLESHOOTING
Item No.
Item
Unit/display contents
6
ABS status
OFF/ON
7
ABS/ASC actuation flag
OFF/ON
8
ASC torque reduction request
OFF/ON
9
Estimated vehicle speed
km/h
10
Brake switch
OFF/ON
11
Parking brake switch
OFF/ON
12
ASC off switch
OFF/ON
14
Steering angle sensor
deg
15
Accelerator position
%
16
FL wheel speed sensor
km/h
17
FR wheel speed sensor
km/h
18
RL wheel speed sensor
km/h
19
RR wheel speed sensor
km/h
20
Centre coupling torque
Nm
21
Yaw rate sensor
deg/s
22
Lateral G-sensor
m/s2
23
Longitudinal G-sensor
m/s2
24
Transfer temperature
°C
26
Centre coupling temperature
°C
28
Centre coupling clutch temperature
°C
29
Master cylinder pressure
MPa
33
ASC equipment information
Not present/present
34
Handle side
LH drive/RH drive
DIAGNOSIS CODE CHART M1274000800186
CAUTION On troubleshooting, if the ignition switch is turned ON while disconnecting connector(s), diagnosis code(s) associated with other system may be set. On completion, confirm all systems for diagnosis code(s). If diagnosis code(s) are set, erase them all. Diagnosis code No.
Diagnostic item
Reference page
C100A
FL wheel speed sensor circuit
P.27C-10
C1011
FL wheel speed sensor signal
P.27C-11
C1014
FL wheel speed sensor performance
P.27C-11
C1015
FR wheel speed sensor circuit
P.27C-10
C101C
FR wheel speed sensor signal
P.27C-11
C101F
FR wheel speed sensor performance
P.27C-11
C1020
RL wheel speed sensor circuit
P.27C-10
C1027
RL wheel speed sensor signal
P.27C-11
ELECTRONICALLY CONTROLLED 4WD TROUBLESHOOTING
27C-9
Diagnosis code No.
Diagnostic item
Reference page
C102A
RL wheel speed sensor performance
P.27C-11
C102B
RR wheel speed sensor circuit
P.27C-10
C1032
RR wheel speed sensor signal
P.27C-11
C1035
RR wheel speed sensor performance
P.27C-11
C1078
Tyre revolutions range
P.27C-12
C1219
Steering wheel sensor signal
P.27C-13
C121A
Steering wheel sensor initialization
P.27C-14
C123C
Sensor cluster malfunction
P.27C-15
C1242
Straight G sensor signal
P.27C-17
C1610
4WD actuator power supply relay
P.27C-18
C1613
4WD mode switch stuck
P.27C-18
C1614
Parking brake switch stuck ON
P.27C-19
C1616
Cranking signal stuck
P.27C-20
C1621
4WD actuator protection
P.27C-21
C1624
4WD ECU internal
P.27C-22
C1626
4WD voltage failure
P.27C-22
C1628
4WD current failure
P.27C-23
C1629
ASC timeout
P.27C-24
C1630
Steering wheel sensor timeout
P.27C-24
C1631
ETACS timeout
P.27C-25
C1632
Engine timeout
P.27C-26
C1633
T/M timeout
P.27C-26
C1707
Implausible coding data
P.27C-27
C2100
Power supply low voltage
P.27C-28
C2101
Power supply high voltage
P.27C-29
C2205
Steering wheel sensor internal error
P.27C-30
U0100
Engine CAN timeout
P.27C-31
U0101
T/M CAN timeout
P.27C-32
U0121
ABS/ASC CAN timeout
P.27C-32
U0126
Steering wheel sensor CAN timeout
P.27C-33
U0141
ETACS CAN timeout
P.27C-34
U0401
Engine CAN message
P.27C-35
U0428
Steering wheel sensor CAN message
P.27C-35
U0431
ETACS CAN message
P.27C-36
U1073
Bus-off
P.27C-37
U1195
Coding not completed
P.27C-37
ELECTRONICALLY CONTROLLED 4WD
27C-10
TROUBLESHOOTING
Diagnosis code No.
Diagnostic item
Reference page
U119A
Chassis No. mismatch
P.27C-38
U1425
T/M CAN message
P.27C-39
U1427
Implausible wheel speed data
P.27C-40
U1428
Sensor Cluster CAN message
P.27C-40
DIAGNOSIS CODE PROCEDURES
Code No.C100A , C1015 , C1020 , C102B : Wheel Speed Sensor Circuit
CAUTION • If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines. • Whenever the ECU is replaced, ensure that the CAN bus lines are normal.
STEP 2. Check whether the diagnosis code is reset. Q: Is the relevant wheel speed sensor diagnosis code No.C100A , C1015 , C1020 , or C102B set? YES : Go to Step 3. NO : This diagnosis is complete.
OPERATION 4WD-ECU receives the wheel speed data from ABS/ASC-ECU via the CAN communication.
DIAGNOSIS CODE SET CONDITION This diagnosis code is set when the abnormality below is detected: • One or more of the wheel speed does not follow
PROBABLE CAUSES • • • • •
Malfunction of wheel speed sensor Damaged harness wires and connectors Malfunction of encoder for wheel speed detection Malfunction of ABS/ASC-ECU Malfunction of 4WD-ECU
DIAGNOSIS PROCEDURE STEP 1. M.U.T.-III CAN bus diagnostics. Use M.U.T.-III to perform the CAN bus diagnosis. Q: Is the check result normal? YES : Go to Step 3. NO : Repair the CAN bus lines (Refer to GROUP
54C − Troubleshooting ). After repairing the CAN bus line, go to Step 2.
STEP 3. M.U.T.-III other system diagnosis code. Check the ABS diagnosis code (Refer to GROUP 35B − Troubleshooting ) or the ASC diagnosis code (Refer to GROUP 35C − Troubleshooting ) . Q: Is the diagnosis code set? YES : Perform the relevant troubleshooting. NO : Go to Step 4.
STEP 4. M.U.T.-III data list. Check the data list of the relevant wheel speed sensor (Refer to P.27C-45). • Item No.18: FL wheel speed sensor • Item No.19: FR wheel speed sensor • Item No.20: RL wheel speed sensor • Item No.21: RR wheel speed sensor Q: Is the check result normal? YES : Intermittent malfunction (Refer to GROUP
00 − How to Cope with Intermittent Malfunction ). NO : Replace the 4WD-ECU (Refer to P.27C-51).
ELECTRONICALLY CONTROLLED 4WD TROUBLESHOOTING
27C-11
Code No.C1011 , C101C , C1027 , C1032 : Wheel Speed Sensor Signal
CAUTION • If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines. • Whenever the ECU is replaced, ensure that the CAN bus lines are normal.
STEP 2. Check whether the diagnosis code is reset. Q: Is the relevant wheel speed sensor diagnosis code No.C1011 , C101C , C1027 , or C1032 set? YES : Go to Step 3. NO : This diagnosis is complete.
OPERATION 4WD-ECU receives the wheel speed data from ABS/ASC-ECU via the CAN communication.
DIAGNOSIS CODE SET CONDITION This diagnosis code is set when the abnormality below is detected: • An irregular change in the wheel speed sensor is detected
STEP 3. M.U.T.-III other system diagnosis code. Check the ABS diagnosis code (Refer to GROUP 35B − Troubleshooting ) or the ASC diagnosis code (Refer to GROUP 35C − Troubleshooting ) . Q: Is the diagnosis code set? YES : Perform the relevant troubleshooting. NO : Go to Step 4.
PROBABLE CAUSES • • • • •
Malfunction of wheel speed sensor Damaged harness wires and connectors Malfunction of encoder for wheel speed detection Malfunction of ABS/ASC-ECU Malfunction of 4WD-ECU
DIAGNOSIS PROCEDURE STEP 1. M.U.T.-III CAN bus diagnostics. Use M.U.T.-III to perform the CAN bus diagnosis.
STEP 4. M.U.T.-III data list. Check the data list of the relevant wheel speed sensor (Refer to P.27C-45). • Item No.18: FL wheel speed sensor • Item No.19: FR wheel speed sensor • Item No.20: RL wheel speed sensor • Item No.21: RR wheel speed sensor Q: Is the check result normal? YES : Intermittent malfunction (Refer to GROUP
00 − How to Cope with Intermittent Malfunction ). NO : Replace the 4WD-ECU (Refer to P.27C-51).
Q: Is the check result normal? YES : Go to Step 3. NO : Repair the CAN bus lines (Refer to GROUP
54C − Troubleshooting ). After repairing the CAN bus line, go to Step 2.
Code No.C1014 , C101F , C102A , C1035 : Wheel Speed Sensor Performance
CAUTION • If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines. • Whenever the ECU is replaced, ensure that the CAN bus lines are normal.
OPERATION 4WD-ECU receives the wheel speed data from ABS/ASC-ECU via the CAN communication.
DIAGNOSIS CODE SET CONDITION This diagnosis code is set when the abnormality below is detected: • One or more of the wheel speed is out of the range of the specified value
PROBABLE CAUSES • • • • •
Malfunction of wheel speed sensor Damaged harness wires and connectors Malfunction of encoder for wheel speed detection Malfunction of ABS/ASC-ECU Malfunction of 4WD-ECU
27C-12
ELECTRONICALLY CONTROLLED 4WD TROUBLESHOOTING
DIAGNOSIS PROCEDURE STEP 1. M.U.T.-III CAN bus diagnostics. Use M.U.T.-III to perform the CAN bus diagnosis. Q: Is the check result normal? YES : Go to Step 3. NO : Repair the CAN bus lines (Refer to GROUP
54C − Troubleshooting ). After repairing the CAN bus line, go to Step 2.
STEP 2. Check whether the diagnosis code is reset. Q: Is the relevant wheel speed sensor diagnosis code No.C1014 , C101F , C102A , or C1035 set? YES : Go to Step 3. NO : This diagnosis is complete.
STEP 3. M.U.T.-III other system diagnosis code. Check the ABS diagnosis code (Refer to GROUP 35B − Troubleshooting ) or the ASC diagnosis code (Refer to GROUP 35C − Troubleshooting ) . Q: Is the diagnosis code set? YES : Perform the relevant troubleshooting. NO : Go to Step 4.
STEP 4. M.U.T.-III data list. Check the data list of the relevant wheel speed sensor (Refer to P.27C-45). • Item No.18: FL wheel speed sensor • Item No.19: FR wheel speed sensor • Item No.20: RL wheel speed sensor • Item No.21: RR wheel speed sensor Q: Is the check result normal? YES : Intermittent malfunction (Refer to GROUP
00 − How to Cope with Intermittent Malfunction ). NO : Replace the 4WD-ECU (Refer to P.27C-51).
Code No.C1078: Tyre Revolutions Range
CAUTION • If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines. • Whenever the ECU is replaced, ensure that the CAN bus lines are normal.
OPERATION 4WD-ECU receives the wheel speed data from ABS/ASC-ECU via the CAN communication.
DIAGNOSIS CODE SET CONDITION This diagnosis code is set when the abnormality below is detected: • Difference in rotation speed between the front and rear wheels exceeds continuously a specific value.
PROBABLE CAUSES • • • • •
Tyre with incorrect diameter equipped Spare tyre installed Improper tyre pressure Malfunction of ABS/ASC-ECU Malfunction of 4WD-ECU
DIAGNOSIS PROCEDURE STEP 1. M.U.T.-III CAN bus diagnostics. Use M.U.T.-III to perform the CAN bus diagnosis. Q: Is the check result normal? YES : Go to Step 3. NO : Repair the CAN bus line (Refer to GROUP
54C − Troubleshooting ). After repairing the CAN bus line, go to Step 2.
STEP 2. Check whether the diagnosis code is reset. Q: Is diagnosis code No.C1078 set? YES : Go to Step 3. NO : This diagnosis is complete.
STEP 3. Check the tyres Check that the wheels/tyres with the identical size are installed, and that each tyre pressure is within the value specified on the tyre pressure label. Q: Is the check result normal? YES : Go to Step 4. NO : Install the wheels/tyres with the identical
size, or adjust the tyre pressure. Then go to Step 5.
ELECTRONICALLY CONTROLLED 4WD TROUBLESHOOTING
STEP 4. M.U.T.-III other system diagnosis code. Check the ABS diagnosis code (Refer to GROUP 35B − Troubleshooting ) or the ASC diagnosis code (Refer to GROUP 35C − Troubleshooting ) . Q: Is the diagnosis code set? YES : Perform the relevant troubleshooting. NO : Go to Step 5.
27C-13
STEP 5. M.U.T.-III data list. Check the following data list. (Refer to P.27C-45). • Item No.18: FL wheel speed sensor • Item No.19: FR wheel speed sensor • Item No.20: RL wheel speed sensor • Item No.21: RR wheel speed sensor Q: Is the check result normal? YES : Intermittent malfunction. (Refer to GROUP
00 − How to Cope with Intermittent Malfunction ). NO : Replace the 4WD-ECU. (Refer to P.27C-51).
Code No.C1219: Steering Wheel Sensor Signal
•
• •
•
CAUTION If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines. Whenever the ECU is replaced, ensure that the CAN bus lines are normal. When the steering wheel sensor is replaced, calibrate the steering wheel sensor (Refer to GROUP 35C − On-vehicle Service ), and reset the steering wheel sensor correction amount stored in the 4WD-ECU. (Item No. 1: SAS adjusted value P.27C-48). When hydraulic unit (integrated with G and yaw rate sensor) is replaced, calibrate G and yaw rate sensor (refer to GROUP 35C − On-vehicle Service )
OPERATION 4WD-ECU receives steering wheel data from the steering wheel sensor via CAN communication.
DIAGNOSIS CODE SET CONDITIONS This diagnosis code is set when the abnormality below is detected: • The tolerance of neutral position of steering wheel sensor exceeds the specified range. • Abnormality in steering wheel sensor output value • Incorrect installation is detected by the initial check of the steering wheel sensor signal. • Abnormality is detected by a comparison of output value from the steering wheel sensor with the output values from wheel speed sensor and G and yaw rate sensor.
PROBABLE CAUSES • • • • • •
Improper installation of steering wheel sensor Malfunction of steering wheel sensor Malfunction of G and yaw rate sensor Malfunction of wheel speed sensor Malfunction of 4WD-ECU Vehicle straight-ahead position and steering wheel neutral position is not matched.
DIAGNOSIS PROCEDURE STEP 1. M.U.T.-III CAN bus diagnostics. Use M.U.T.-III to perform the CAN bus diagnosis. Q: Is the check result normal? YES : Go to Step 3. NO : Repair the CAN bus lines (Refer to GROUP
54C − Troubleshooting ). After repairing the CAN bus line, go to Step 2.
STEP 2. Check whether the diagnosis code is reset. Q: Is diagnosis code No.C1219 set? YES : Go to Step 3. NO : This diagnosis is complete.
STEP 3. M.U.T.-III diagnosis code. Q: Is diagnosis code No.C2205 set? YES : Perform the relevant troubleshooting. NO : Go to Step 4.
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ELECTRONICALLY CONTROLLED 4WD TROUBLESHOOTING
STEP 4. M.U.T.-III diagnosis code. Check if the wheel speed sensor-related, G and yaw rate sensor-related, or steering wheel sensor-related diagnosis code is set. Q: Is the diagnosis code set? YES : Carry out the appropriate troubleshooting.
Then go to Step 9. NO : Go to Step 5. STEP 5. Check of steering wheel sensor installation status Check that the steering wheel sensor is installed correctly (Refer to GROUP 35C − Steering Wheel Sensor ). Q: Is the check result normal? YES : Go to Step 6. NO : Install the steering wheel sensor correctly.
STEP 7. M.U.T.-III data list. Check the following data list (Refer toP.27C-45). • Item No.8: Steering angle sensor Q: Is the check result normal? YES : Go to Step 8. NO : Replace the steering wheel sensor (Refer to
GROUP 35C − Steering Wheel Sensor ). Then, go to Step 9.
STEP 8. Check whether the diagnosis code is reset. Q: Is diagnosis code No.C1219 set? YES : Replace the 4WD-ECU (Refer to P.27C-51).
Then, go to Step 9 . NO : Intermittent malfunction (Refer to GROUP 00 − How to Cope with Intermittent Malfunction ).
Then go to Step 6. STEP 6. Wheel alignment check Q: Is the check result normal? YES : After checking the wheel alignment,
calibrate the steering wheel sensor (Refer to GROUP 35C − On-vehicle Service ), and reset the steering wheel sensor correction amount stored in the 4WD-ECU(Refer to P.27C-48). Then, go to Step 7. NO : After adjusting the wheel alignment, calibrate the steering wheel sensor (Refer to GROUP 35C − On-vehicle Service ), and reset the steering wheel sensor correction amount stored in the 4WD-ECU(Refer to P.27C-48). Then, go to Step 7.
STEP 9. Check whether the diagnosis code is reset. Q: Is diagnosis code No.C1219 set? YES : Return to Step 1. NO : This diagnosis is complete.
Code No.C121A: Steering Wheel Sensor Initialization
CAUTION • If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines. • Whenever the ECU is replaced, ensure that the CAN bus lines are normal. • When the steering wheel sensor is replaced, calibrate the steering wheel sensor (Refer to GROUP 35C − On-vehicle Service ), and reset the steering wheel sensor correction amount stored in the 4WD-ECU. (Item No. 1: SAS adjusted value P.27C-48).
OPERATION Steering wheel sensor stores the neutral position learned by the M.U.T.-III. When the neutral position has not been learned, the steering wheel sensor outputs the signal indicating that the learning has not been performed.
DIAGNOSIS CODE SET CONDITION This diagnosis code is set when the abnormality below is detected: • the steering wheel sensor has not learned the neutral position
ELECTRONICALLY CONTROLLED 4WD TROUBLESHOOTING
PROBABLE CAUSES • Steering wheel sensor neutral point not learned • Malfunction of steering wheel sensor • Malfunction of 4WD-ECU
DIAGNOSIS PROCEDURE
STEP 3. Steering wheel sensor calibration. Perform calibration of the steering wheel sensor (Refer to GROUP 35C − On-vehicle Service ). Q: Has the calibration succeeded? YES : Go to Step 4. NO : Replace the steering wheel sensor (Refer to
GROUP 35C − Steering Wheel Sensor ). Then, go to Step 4.
STEP 1. M.U.T.-III CAN bus diagnostics. Use M.U.T.-III to perform the CAN bus diagnosis. Q: Is the check result normal? YES : Go to Step 3. NO : Repair the CAN bus lines (Refer to GROUP
54C − Troubleshooting ). After repairing the CAN bus line, go to Step 2.
STEP 4. Check whether the diagnosis code is reset. Q: Is diagnosis code No.C121A set? YES : Replace the 4WD-ECU (Refer to P.27C-51).
Then, go to Step 5. NO : Intermittent malfunction (Refer to GROUP 00 − How to Cope with Intermittent Malfunction ).
STEP 2. Check whether the diagnosis code is reset. Q: Is diagnosis code No.C121A set? YES : Go to Step 3. NO : This diagnosis is complete.
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STEP 5. Check whether the diagnosis code is reset. Q: Is diagnosis code No.C121A set? YES : Return to Step 1. NO : This diagnosis is complete.
Code No.C123C: Sensor Cluster Malfunction
•
• •
•
CAUTION If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines. Whenever the ECU is replaced, ensure that the CAN bus lines are normal. When the steering wheel sensor is replaced, calibrate the steering wheel sensor (Refer to GROUP 35C − On-vehicle Service ), and reset the steering wheel sensor correction amount stored in the 4WD-ECU. (Item No. 1: SAS adjusted value P.27C-48). When hydraulic unit (integrated with G and yaw rate sensor) is replaced, calibrate G and yaw rate sensor (Refer to GROUP 35C − On-vehicle Service .)
OPERATION 4WD-ECU receives the G and yaw rate sensor data from ASC-ECU via the CAN communication.
DIAGNOSIS CODE SET CONDITIONS This diagnosis code is set when the abnormality below is detected: • Abnormality in G and yaw rate sensor output value • Abnormality is detected by a comparison of output value from the G and yaw rate sensor with the output values from wheel speed sensor and steering wheel sensor.
PROBABLE CAUSES • • • • •
Malfunction of G and yaw rate sensor Malfunction of wheel speed sensor Improper installation of steering wheel sensor Malfunction of steering wheel sensor Malfunction of 4WD-ECU
DIAGNOSIS PROCEDURE STEP 1. M.U.T.-III CAN bus diagnostics. Use M.U.T.-III to perform the CAN bus diagnosis. Q: Is the check result normal?
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ELECTRONICALLY CONTROLLED 4WD TROUBLESHOOTING
YES : Go to Step 3. NO : Repair the CAN bus lines (Refer to GROUP
54C − Troubleshooting ). After repairing the CAN bus line, go to Step 2.
STEP 2. Check whether the diagnosis code is reset. Q: Is diagnosis code No.C123C set? YES : Go to Step 3. NO : This diagnosis is complete.
STEP 7. Check of steering wheel sensor installation status. Check that the steering wheel sensor is installed correctly (Refer to GROUP 35C − Steering Wheel Sensor ). Q: Is the check result normal? YES : Go to Step 8. NO : Install the steering wheel sensor correctly.
Then go to Step 8. STEP 8. Wheel alignment check.
STEP 3. M.U.T.-III diagnosis code. Check the ASC diagnosis code. (Refer to GROUP 35C − Troubleshooting ). Q: Is the check result normal? YES : Perform the relevant troubleshooting. NO : Go to Step 4.
STEP 4. M.U.T.-III other system diagnosis code. Check if the wheel speed sensor-related, or steering wheel sensor-related diagnosis code is set. Q: Is the diagnosis code set? YES : Perform the relevant troubleshooting. NO : Go to Step 5.
STEP 5. Check of hydraulic unit (integrated with G and yaw rate sensor) installation status. Check that the hydraulic unit (integrated with G and yaw rate sensor) is installed correctly (Refer to GROUP 35C − Hydraulic unit (integrated with G and yaw rate sensor) ). Q: Is the check result normal? YES : Go to Step 6. NO : Reinstall the hydraulic unit (integrated with
G and yaw rate sensor) correctly. Then go to Step 6. STEP 6. M.U.T.-III data list. Check the following data list (Refer to P.27C-45). • Item No.22: Yaw rate sensor • Item No.23: Lateral G sensor Q: Is the check result normal? YES : Go to Step 7. NO : Replace the hydraulic unit (integrated with
G and yaw rate sensor) is installed correctly (Refer to GROUP 35C − Hydraulic unit (integrated with G and yaw rate sensor) ). Then go to Step 11.
Q: Is the check result normal? YES : After checking the wheel alignment,
calibrate the steering wheel sensor (Refer to GROUP 35C − On-vehicle Service ), and reset the steering wheel sensor correction amount stored in the 4WD-ECU(Refer to P.27C-48). Then go to Step 9. NO : After adjusting the wheel alignment, calibrate the steering wheel sensor (Refer to GROUP 35C − On-vehicle Service ), and reset the steering wheel sensor correction amount stored in the 4WD-ECU(Refer to P.27C-48). Then go to Step 9. STEP 9. M.U.T.-III data list. Check the following data list (Refer toP.27C-45). • Item No.8: Steering angle sensor Q: Is the check result normal? YES : Go to Step 10. NO : Replace the steering wheel sensor (Refer to
GROUP 35C − Steering Wheel Sensor ). Then go to Step 10.
STEP 10. Check whether the diagnosis code is reset. Q: Is diagnosis code No.C123C set? YES : Replace the 4WD-ECU (Refer to P.27C-51).
Then go to Step 11. NO : Intermittent malfunction (Refer to GROUP
00 − How to Cope with Intermittent Malfunction ).
STEP 11. Check whether the diagnosis code is reset. Q: Is diagnosis code No.C123C set? YES : Return to Step 1. NO : This diagnosis is complete.
ELECTRONICALLY CONTROLLED 4WD TROUBLESHOOTING
27C-17
Code No.C1242: Straight G Sensor Signal
CAUTION • If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines. • Whenever the ECU is replaced, ensure that the CAN bus lines are normal. • When hydraulic unit (integrated with G and yaw rate sensor) is replaced, calibrate G and yaw rate sensor (refer to GROUP 35C − On-vehicle Service )
OPERATION 4WD-ECU receives the G and yaw rate sensor data from ASC-ECU via the CAN communication.
DIAGNOSIS CODE SET CONDITIONS This diagnosis code is set when the abnormality below is detected: • Abnormality in G and yaw rate sensor output value • The abnormality is detected by comparing the longitudinal G-sensor value output from the G and yaw rate sensor with the value output from the wheel speed sensor.
PROBABLE CAUSES • • • •
Malfunction of G and yaw rate sensor Malfunction of wheel speed sensor Malfunction of stop lamp switch Malfunction of 4WD-ECU
DIAGNOSIS PROCEDURE STEP 1. M.U.T.-III CAN bus diagnostics. Use M.U.T.-III to perform the CAN bus diagnosis. Q: Is the check result normal? YES : Go to Step 3. NO : Repair the CAN bus lines (Refer to GROUP
54C − Troubleshooting ). After repairing the CAN bus line, go to Step 2.
STEP 3. M.U.T.-III other system diagnosis code. Check if the wheel speed sensor-related diagnosis code is set. Q: Is the diagnosis code set? YES : Perform the relevant troubleshooting. NO : Go to Step 4.
STEP 4. Check of hydraulic unit (integrated with G and yaw rate sensor) installation status. Check that the hydraulic unit (integrated with G and yaw rate sensor) is installed correctly (Refer to GROUP 35B − Hydraulic unit (integrated with G and yaw rate sensor) GROUP 35C − Hydraulic unit (integrated with G and yaw rate sensor) ). Q: Is the check result normal? YES : Go to Step 5. NO : Reinstall the hydraulic unit (integrated with
G and yaw rate sensor) correctly. Then go to Step 5. STEP 5. M.U.T.-III data list. Check the following data list (Refer toP.27C-45). • Item No.24: Longitudinal G sensor Q: Is the check result normal? YES : Go to Step 6. NO : Replace the hydraulic unit (integrated with
G and yaw rate sensor) (Refer to GROUP 35B − Hydraulic unit (integrated with G and yaw rate sensor) or GROUP 35C − Hydraulic unit (integrated with G and yaw rate sensor) ). Then go to Step 7. STEP 6. Check whether the diagnosis code is reset. Q: Is diagnosis code No.C1242 set? YES : Replace the 4WD-ECU (Refer to P.27C-51).
Then go to Step 7. NO : Intermittent malfunction (Refer to GROUP
STEP 2. Check whether the diagnosis code is reset. Q: Is diagnosis code No.C1242 set? YES : Go to Step 3. NO : This diagnosis is complete.
00 − How to Cope with Intermittent Malfunction ).
STEP 7. Check whether the diagnosis code is reset. Q: Is diagnosis code No.C1242 set? YES : Return to Step 1. NO : This diagnosis is complete.
27C-18
ELECTRONICALLY CONTROLLED 4WD TROUBLESHOOTING
Code No.C1610: 4WD Actuator Power Supply Relay
OPERATION A relay is incorporated in 4WD-ECU, and the power is supplied to the actuator via this relay.
DIAGNOSIS CODE SET CONDITIONS This diagnosis code is set when the abnormality below is detected: • Battery power supply voltage is less than 6 V. • Abnormal voltage in the 4WD-ECU.
PROBABLE CAUSES • Malfunction of 4WD-ECU • Malfunction of electronic control coupling solenoid • Damaged harness wires and connectors
DIAGNOSIS PROCEDURE STEP 1. Check the wiring harness between electronic control coupling solenoid connector and 4WD-ECU connector terminal SOL+, SOL-. Check the power supply or earth line for short circuit. Q: Is the check result normal? YES : Go to Step 2. NO : Repair the defective connector or the wiring
STEP 2. Check of the electronic control coupling solenoid Refer to P.27C-49. Q: Is the check result normal? YES : Go to Step 3. NO : Replace the electronic control coupling
(Refer to P.27C-53). STEP 3. Check whether the diagnosis code is reset. Q: Is diagnosis code No.C1610 set? YES : Replace the 4WD-ECU (Refer to P.27C-51).
Then go to Step 4. NO : Intermittent malfunction (Refer to GROUP
00 − How to Cope with Intermittent Malfunction ).
STEP 4. Check whether the diagnosis code is reset. Q: Is diagnosis code No.C1610 set? YES : Return to Step 1. NO : This diagnosis is complete.
harness.
Code No.C1613: 4WD Mode Switch Stuck
OPERATION The 4WD-ECU controls the driving mode by the signal from the 4WD switch.
DIAGNOSIS CODE SET CONDITION This diagnosis code is set when the abnormality below is detected: • The 4WD switch is stuck on
DIAGNOSIS PROCEDURE STEP 1. M.U.T.-III data list Check the following data list (Refer to P.27C-45). • Item No.41: Mode SW Q: Is the check result normal? YES : Go to Step 4. NO : Go to Step 2.
PROBABLE CAUSES • 4WD switch malfunction • Damaged harness wires and connectors • Malfunction of 4WD-ECU
STEP 2. Check the wiring harness between 4WD switch connector and 4WD-ECU connector terminal sw-1. Check the output line for short circuit. Q: Is the check result normal? YES : Go to Step 3. NO : Repair the defective connector or the wiring
harness.
ELECTRONICALLY CONTROLLED 4WD TROUBLESHOOTING
STEP 3. 4WD switch inspection Refer to P.27C-52. Q: Is the check result normal? YES : Go to Step 4. NO : Replace the 4WD switch (Refer to
P.27C-52). Then go to Step 5. STEP 4. Check whether the diagnosis code is reset. Q: Is the diagnosis code No.C1613 set?
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YES : Replace the 4WD-ECU (Refer to P.27C-51).
Then go to Step 5. NO : Intermittent malfunction (Refer to GROUP
00 − How to Cope with Intermittent Malfunction ).
STEP 5. Check whether the diagnosis code is reset. Q: Is the diagnosis code No.C1613 set? YES : Return to Step 1. NO : This diagnosis is complete.
Code No.C1614: Parking Brake Switch Stuck On
CAUTION • If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines. • Whenever the ECU is replaced, ensure that the CAN bus lines are normal.
OPERATION The 4WD-ECU receives the parking brake switch signal from the combination meter via CAN communication.
DIAGNOSIS CODE SET CONDITION This diagnosis code is set when the abnormality below is detected: • The parking brake switch is stuck on
PROBABLE CAUSES • • • • •
Parking brake switch malfunction Damaged harness wires and connectors Combination meter malfunction Malfunction of 4WD-ECU Driving with parking brake ON
DIAGNOSIS PROCEDURE STEP 1. M.U.T.-III CAN bus diagnostics. Use M.U.T.-III to perform the CAN bus diagnosis. Q: Is the check result normal? YES : Go to Step 3. NO : Repair the CAN bus lines (Refer to GROUP
54C − Troubleshooting ). After repairing the CAN bus line, go to Step 2.
STEP 6. Check whether the diagnosis code is reset.
STEP 2. Check whether the diagnosis code is reset. Q: Is diagnosis code No.C1614 set? YES : Go to Step 3. NO : This diagnosis is complete.
STEP 3. M.U.T.-III data list. Check the following data list (Refer toP.27C-45). • Item No.29: Parking brake SW (CAN input) Q: Is the check result normal? YES : Go to Step 7. NO : Go to Step 4.
STEP 4. Check the parking brake switch. Check the parking brake switch (Refer to GROUP 36 − On-vehicle Service ). Q: Is the check result normal? YES : Go to Step 5. NO : Replace the parking brake switch. (Refer to
GROUP 36 − Parking Brake Lever ). Then go to Step 7.
STEP 5. Check the wiring harness between combination meter connector and parking brake switch connector. Check the power supply line for short circuit. Q: Is the check result normal? YES : Replace the combination meter (Refer to
GROUP 54A − Combination Meter ). Then go to Step 6. NO : Repair the defective connector or the wiring harness. Then go to Step 6.
Q: Is diagnosis code No.C1614 set?
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ELECTRONICALLY CONTROLLED 4WD TROUBLESHOOTING
YES : Replace the 4WD-ECU. (Refer to
P.27C-51). Then go to Step 7. NO : Intermittent malfunction. (Refer to GROUP 00 − How to Cope with Intermittent Malfunction ).
STEP 7. Check whether the diagnosis code is reset. Q: Is diagnosis code No.C1614 set? YES : Return to Step 1. NO : This diagnosis is complete.
Code No.C1616: Cranking Signal Stuck
CAUTION • If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines. • Whenever the ECU is replaced, ensure that the CAN bus lines are normal. • When the ETACS-ECU of vehicles without KOS is replaced, the encrypted code of the ignition key needs to be registered to the ETACS-ECU. (If the encrypted code is not registered, the engine cannot be started. Register the encrypted code as described in GROUP 54A, Immobilizer System − How to Register Key ID .)
STEP 2. Check whether the diagnosis code is reset. Q: Is diagnosis code No.C1616 set? YES : Go to Step 3. NO : This diagnosis is complete.
STEP 3. M.U.T.-III other system diagnosis code. • Check the KOS diagnosis code (Refer to GROUP 42B − Troubleshooting ) . • Check the ETACS diagnosis code (Refer to GROUP 54A − Troubleshooting ). Q: Is the diagnosis code set? YES : Perform the relevant troubleshooting. NO : Go to Step 4.
OPERATION 4WD-ECU receives the signal of the ignition switch from ETACS-ECU via CAN communication.
DIAGNOSIS CODE SET CONDITION This diagnosis code is set when the abnormality below is detected: • The cranking signal is set for 5 seconds or more continuously while driving
PROBABLE CAUSES • • • •
Malfunction of the ETACS-ECU Ignition switch malfunction Damaged harness wires and connectors Malfunction of 4WD-ECU
DIAGNOSIS PROCEDURE STEP 1. M.U.T.-III CAN bus diagnostics. Use M.U.T.-III to perform the CAN bus diagnosis. Q: Is the check result normal? YES : Go to Step 3. NO : Repair the CAN bus lines (Refer to GROUP
54C − Troubleshooting ). After repairing the CAN bus line, go to Step 2. YES : Go to Step 7. NO : Repair the defective connector or the wiring
STEP 4. M.U.T.-III data list. Check the following data list (Refer toP.27C-45). • Item No.30: Ignition SW (CAN input) Q: Is the check result normal? YES : Go to Step 8. NO : Go to Step 5.
STEP 5. Ignition switch check (1) Disconnect ignition switch connector, and check the continuity between the power supply and start signal at the ignition switch side. (2) Turn the ignition switch to the "ON" position. OK: No continuity Q: Is the check result normal? YES : Go to Step 6. NO : Replace the ignition switch. (Refer to
GROUP 54A − Ignition Switch ). Then go to Step 9.
STEP 6. Check of short circuit in start signal line between ignition switch connector and ETACS-ECU connector. Q: Is the check result normal?
harness. Then go to Step 9.
ELECTRONICALLY CONTROLLED 4WD TROUBLESHOOTING
STEP 7. M.U.T.-III data list. Check the data list of the ETACS (Refer to GROUP 54A − ETACS ). • Item No.287: Starter switch Q: Is the check result normal? YES : Go to Step 8. NO : Replace the ETACS-ECU. Then go to Step
8. STEP 8. Check whether the diagnosis code is reset.
27C-21
YES : Replace the 4WD-ECU (Refer to P.27C-51).
Then go to Step 9 . NO : Intermittent malfunction (Refer to GROUP
00 − How to Cope with Intermittent Malfunction ).
STEP 9. Check whether the diagnosis code is reset. Q: Is diagnosis code No.C1616 set? YES : Return to Step 1. NO : This diagnosis is complete.
Q: Is diagnosis code No.C1616 set?
Code No.C1621: 4WD Actuator Protection
CAUTION • If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines. • Whenever the ECU is replaced, ensure that the CAN bus lines are normal.
OPERATION The 4WD-ECU calculates the electronic control coupling temperature by the information of the electronic control coupling control amount, outside temperate, etc. If it is detected that the electronic control coupling temperature becomes extremely high, the high fluid temperature warning is displayed on the warning indicator.
DIAGNOSIS CODE SET CONDITION This diagnosis code is set when the abnormality below is detected: • The control is suspended to protect the electronic control coupling.
PROBABLE CAUSES • Electronic control coupling protection control status • Severe driving • Electronic control coupling failure (clutch slippage, etc.) • Outside temperature signal failure • Wheel speed signal failure • Engine-related failure (engine speed signal failure) • Ignition off time signal failure
DIAGNOSIS PROCEDURE STEP 1. Check whether the diagnosis code is reset. (1) To release the electronic control coupling (Centre) protection control, leave the vehicle for 15 minutes or longer after the high fluid temperature warning on the warning indicator disappears. (2) Erase the diagnosis code. (3) Carry out the test drive. NOTE: Do not carry out the severe test drive. (4) Check if the diagnosis code is set. Q: Is diagnosis code No.C1621 set? YES : Go to Step 2. NO : Intermittent malfunction (Refer to GROUP
00 − How to Cope with Intermittent Malfunction ).
STEP 2. M.U.T.-III CAN bus diagnostics. Use M.U.T.-III to perform the CAN bus diagnosis. Q: Is the check result normal? YES : Go to Step 4. NO : Repair the CAN bus lines (Refer to GROUP
54C − Troubleshooting ). After repairing the CAN bus line, go to Step 3.
STEP 3. Check whether the diagnosis code is reset. Q: Is diagnosis code No.C1621 set? YES : Go to Step 4. NO : This diagnosis is complete.
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ELECTRONICALLY CONTROLLED 4WD TROUBLESHOOTING
STEP 4. M.U.T.-III data list Check the following data list (Refer to P.27C-45). • Item No.12: Engine speed Q: Is the check result normal? YES : Go to Step 5. NO : Perform the troubleshooting for the engine
(Refer to GROUP 13A − Troubleshooting ).
STEP 5. M.U.T.-III data list Check the following data list (Refer to P.27C-45). • Item No.18: FL Wheel speed sensor • Item No.19: FR Wheel speed sensor • Item No.20: RL Wheel speed sensor • Item No.21: RR Wheel speed sensor Q: Is the check result normal? YES : Go to Step 6. NO : Perform the ABS diagnosis code (Refer to
GROUP 35B − Troubleshooting ) or the ASC diagnosis code (Refer to GROUP 35C − Troubleshooting ) .
STEP 6. M.U.T.-III data list Check the following data list (Refer to P.27C-45). • Item No.34: Ambient temperature (CAN input) • Item No.35: Ignition off time (CAN input) Q: Is the check result normal?
YES : Go to Step 7. NO : Perform the troubleshooting for the ETACS
(Refer to GROUP 54A − ETACS, Troubleshooting ).
STEP 7. Check of the electronic control coupling Refer to P.27C-49. Q: Is the check result normal? YES : Go to Step 8. NO : Replace the electronic control coupling
(Refer to P.27C-53). STEP 8. Check whether the diagnosis code is reset. (1) To release the electronic control coupling protection control, leave the vehicle for 15 minutes or longer after the high fluid temperature warning on the warning indicator disappears. (2) Erase the diagnosis code. (3) Carry out the test drive. NOTE: Do not carry out the severe test drive. (4) Check if the diagnosis code is set. Q: Is diagnosis code No.C1621 set? YES : Replace the 4WD-ECU (Refer to P.27C-51). NO : Intermittent malfunction (Refer to GROUP
00 − How to Cope with Intermittent Malfunction ).
Code No.C1624: 4WD-ECU Internal
OPERATION 4WD-ECU monitors the malfunction in the ECU.
DIAGNOSIS CODE SET CONDITION This diagnosis code is set when the abnormality below is detected:
• RAM/ROM/EEPROM of 4WD-ECU has a failure.
PROBABLE CAUSES • Malfunction of 4WD-ECU • Damaged harness wires and connectors
Code No. C1626: 4WD Voltage Failure
OPERATION The 4WD-ECU monitors the actuator power supply voltage.
DIAGNOSIS CODE SET CONDITION This diagnosis code is set when the abnormality below is detected:
• Electronic control coupling solenoid voltage monitor value: 10 V or more.
PROBABLE CAUSES • Malfunction of electronic control coupling solenoid • Damaged harness wires and connectors • Malfunction of 4WD-ECU
ELECTRONICALLY CONTROLLED 4WD TROUBLESHOOTING
DIAGNOSIS PROCEDURE STEP 1. Check the wiring harness between electronic control coupling solenoid connector and 4WD-ECU connector terminal SOL+, SOL-. Check the power supply, earth line for short circuit (for short to the power supply). Q: Is the check result normal? YES : Go to Step 2. NO : Repair the defective connector or the wiring
harness. Then go to Step 4. STEP 2. Check of the electronic control coupling solenoid Refer to P.27C-49. Q: Is the check result normal?
27C-23
YES : Go to Step 3. NO : Replace the electronic control coupling
(Refer to P.27C-53). Then go to Step 4. STEP 3. Check whether the diagnosis code is reset. Q: Is diagnosis code No.C1626 set? YES : Replace the 4WD-ECU (Refer to P.27C-51).
Then go to Step 4. NO : Intermittent malfunction (Refer to GROUP
00 − How to Cope with Intermittent Malfunction ).
STEP 4. Check whether the diagnosis code is reset. Q: Is diagnosis code No.C1626 set? YES : Return to Step 1. NO : This diagnosis is complete.
Code No. C1628: 4WD Current Failure
OPERATION The 4WD-ECU monitors the current value of the electronic control coupling solenoid.
DIAGNOSIS CODE SET CONDITIONS This diagnosis code is set when the abnormality below is detected: • Commanded current to the electronic control coupling does not correspond with the monitored current value.
PROBABLE CAUSES • Malfunction of electronic control coupling solenoid • Damaged harness wires and connectors • Malfunction of 4WD-ECU
DIAGNOSIS PROCEDURE
YES : Go to Step 2 NO : Repair the defective connector or the wiring
harness. Then go to Step 4. STEP 2. Check of the electronic control coupling solenoid Refer to P.27C-49. Q: Is the check result normal? YES : Go to Step 3 NO : Replace the electronic control coupling
(Refer to P.27C-53). Then go to Step 4. STEP 3. Check whether the diagnosis code is reset. Q: Is diagnosis code No.C1628 set? YES : Replace the 4WD-ECU (Refer to P.27C-51).
Then go to Step 4. NO : Intermittent malfunction (Refer to GROUP
STEP 1. Check the wiring harness between electronic control coupling solenoid connector and 4WD-ECU connector terminal SOL+, SOL-. Check the power supply, earth line for open or short circuit. Q: Is the check result normal?
00 − How to Cope with Intermittent Malfunction ).
STEP 4. Check whether the diagnosis code is reset. Q: Is diagnosis code No.C1628 set? YES : Return to Step 1. NO : This diagnosis is complete.
27C-24
ELECTRONICALLY CONTROLLED 4WD TROUBLESHOOTING
Code No. C1629: ASC Timeout
CAUTION • If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines. • Whenever the ECU is replaced, ensure that the CAN bus lines are normal.
OPERATION 4WD-ECU communicates with the ASC-ECU via the CAN bus lines.
DIAGNOSIS CODE SET CONDITION This diagnosis code is set when the abnormality below is detected: • The CAN signal of the ASC-ECU cannot be received.
YES : Go to Step 2. NO : Repair the CAN bus lines (Refer to GROUP
54C − Troubleshooting ).
STEP 2. M.U.T.-III other system diagnosis code. Check the ASC diagnosis code (Refer to GROUP 35C − Troubleshooting ). Q: Is the diagnosis code set? YES : Perform the relevant troubleshooting. NO : Go to Step 3.
STEP 3. Check whether the diagnosis code is reset. Q: Is diagnosis code No.C1629 set? YES : Replace the 4WD-ECU (Refer to P.27C-51).
Then go to Step 4. NO : Intermittent malfunction (Refer to GROUP
PROBABLE CAUSES • • • •
Malfunction of the CAN bus line Damaged connectors (ASC-ECU) Malfunction of ASC-ECU Malfunction of 4WD-ECU
DIAGNOSIS PROCEDURE STEP 1. M.U.T.-III CAN bus diagnostics. Use M.U.T.-III to perform the CAN bus diagnosis.
00 − How to Cope with Intermittent Malfunction ).
STEP 4. Check whether the diagnosis code is reset. Q: Is diagnosis code No.C1629 set? YES : Return to Step 1. NO : This diagnosis is complete.
Q: Is the check result normal?
Code No. C1630: Steering Wheel Sensor Timeout
CAUTION • If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines. • Whenever the ECU is replaced, ensure that the CAN bus lines are normal. • When the steering wheel sensor is replaced, calibrate the steering wheel sensor (Refer to GROUP 35C − On-vehicle Service ), and reset the steering wheel sensor correction amount stored in the 4WD-ECU. (Item No. 1: SAS adjusted value P.27C-48).
OPERATION 4WD-ECU communicates with the steering wheel sensor via the CAN bus lines.
DIAGNOSIS CODE SET CONDITION This diagnosis code is set when the abnormality below is detected: • The CAN signal of the steering wheel sensor cannot be received.
PROBABLE CAUSES • • • •
Malfunction of the CAN bus line Damaged connectors (steering wheel sensor) Malfunction of the steering wheel sensor Malfunction of 4WD-ECU
ELECTRONICALLY CONTROLLED 4WD TROUBLESHOOTING
DIAGNOSIS PROCEDURE STEP 1. M.U.T.-III CAN bus diagnostics. Use M.U.T.-III to perform the CAN bus diagnosis. Q: Is the check result normal? YES : Go to Step 2. NO : Repair the CAN bus lines (Refer to GROUP
54C − Troubleshooting ).
STEP 2. M.U.T.-III data list. Check the following data list (Refer to P.27C-45). • Item No.8: Steering angle sensor Q: Is the check result normal? YES : Intermittent malfunction (Refer to GROUP
27C-25
STEP 3. Check whether the diagnosis code is reset. Q: Is diagnosis code No.C1630 set? YES : Replace the 4WD-ECU.(Refer to
P.27C-51). Then go to Step 4. NO : Intermittent malfunction. (Refer to GROUP
00 − How to Cope with Intermittent Malfunction ).
STEP 4. Check whether the diagnosis code is reset. Q: Is diagnosis code No.C1630 set? YES : Return to Step 1. NO : This diagnosis is complete.
00 − How to Cope with Intermittent Malfunction ). NO : Replace the steering wheel sensor (Refer to GROUP 35C − Steering Wheel Sensor ). Then go to Step 3.
Code No. C1631: ETACS Timeout
CAUTION • If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines. • Whenever the ECU is replaced, ensure that the CAN bus lines are normal.
OPERATION 4WD-ECU communicates with the ETACS-ECU via the CAN bus lines.
DIAGNOSIS CODE SET CONDITION This diagnosis code is set when the abnormality below is detected: • The CAN signal of the ETACS-ECU cannot be received.
PROBABLE CAUSES • • • •
Malfunction of the CAN bus line Damaged connectors (ETACS-ECU) ETACS-ECU malfunction Malfunction of 4WD-ECU
DIAGNOSIS PROCEDURE STEP 1. M.U.T.-III CAN bus diagnostics. Use M.U.T.-III to perform the CAN bus diagnosis. Q: Is the check result normal? YES : Go to Step 2. NO : Repair the CAN bus lines (Refer to GROUP
54C − Troubleshooting ).
STEP 2. M.U.T.-III other system diagnosis code. Check the ETACS diagnosis code (Refer to GROUP 54A − Troubleshooting ). Q: Is the diagnosis code set? YES : Perform the relevant troubleshooting. NO : Go to Step 3.
STEP 3. Check whether the diagnosis code is reset. Q: Is diagnosis code No.C1631 set? YES : Replace the 4WD-ECU (Refer to P.27C-51).
Then go to Step 4. NO : Intermittent malfunction (Refer to GROUP
00 − How to Cope with Intermittent Malfunction ).
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ELECTRONICALLY CONTROLLED 4WD TROUBLESHOOTING
STEP 4. Check whether the diagnosis code is reset.
YES : Return to Step 1. NO : This diagnosis is complete.
Q: Is diagnosis code No.C1631 set?
Code No. C1632: Engine Timeout
CAUTION • If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines. • Whenever the ECU is replaced, ensure that the CAN bus lines are normal.
OPERATION 4WD-ECU communicates with the engine-ECU via the CAN bus lines.
YES : Go to Step 2. NO : Repair the CAN bus lines (Refer to GROUP
54C − Troubleshooting ). After repairing the CAN bus line, go to Step 2.
STEP 2. M.U.T.-III other system diagnosis code. Check the engine diagnosis code (Refer to GROUP 13A −Troubleshooting ). Q: Is the diagnosis code set? YES : Perform the relevant troubleshooting. NO : Go to Step 3.
DIAGNOSIS CODE SET CONDITIONS This diagnosis code is set when the abnormality below is detected: • The CAN signal of the engine-ECU cannot be received.
PROBABLE CAUSES • • • •
Malfunction of the CAN bus line Damaged connectors (Engine-ECU) Malfunction of Engine-ECU Malfunction of 4WD-ECU
DIAGNOSIS PROCEDURE STEP 1. M.U.T.-III CAN bus diagnostics. Use M.U.T.-III to perform the CAN bus diagnosis.
STEP 3. Check whether the diagnosis code is reset. Q: Is diagnosis code No.C1632 set? YES : Replace the 4WD-ECU (Refer to P.27C-51).
Then go to Step 4. NO : Intermittent malfunction (Refer to GROUP
00 − How to Cope with Intermittent Malfunction ).
STEP 4. Check whether the diagnosis code is reset. Q: Is diagnosis code No.C1632 set? YES : Return to Step 1. NO : This diagnosis is complete.
Q: Is the check result normal?
Code No. C1633: T/M Timeout
CAUTION • If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines. • Whenever the ECU is replaced, ensure that the CAN bus lines are normal. • When the ETACS-ECU of vehicles without KOS is replaced, the encrypted code of the ignition key needs to be registered to the ETACS-ECU. (If the encrypted code is not reg-
istered, the engine cannot be started. Register the encrypted code as described in GROUP 54A, Immobilizer System − How to Register Key ID .)
OPERATION 4WD-ECU communicates with CVT-ECU via the CAN bus lines.
DIAGNOSIS CODE SET CONDITION This diagnosis code is set when the abnormality below is detected:
ELECTRONICALLY CONTROLLED 4WD TROUBLESHOOTING
• the CAN signal of the CVT-ECU cannot be received.
PROBABLE CAUSES • • • • •
Malfunction of the CAN bus line Damaged connectors (CVT-ECU) Malfunction of CVT-ECU Malfunction of 4WD-ECU Coding failure
27C-27
STEP 3. ETACS-ECU coding data check. Check the transmission coding data stored in ETACS-ECU for any abnormality (Refer to GROUP 00 − Coding Reference Table ). Q: Is the check result normal? YES : Go to Step 4. NO : Replace the ETACS-ECU. Then go to Step
5.
DIAGNOSIS PROCEDURE
STEP 4. Check whether the diagnosis code is reset.
STEP 1. M.U.T.-III CAN bus diagnostics. Use M.U.T.-III to perform the CAN bus diagnosis.
Q: Is diagnosis code No.C1633 set? YES : Replace the 4WD-ECU (Refer to P.27C-51).
Then go to Step 5 . NO : Intermittent malfunction (Refer to GROUP 00 − How to Cope with Intermittent Malfunction ).
Q: Is the check result normal? YES : Go to Step 2. NO : Repair the CAN bus lines (Refer to GROUP
54C − Troubleshooting ).
STEP 2. M.U.T.-III other system diagnosis code. Check the CVT diagnosis code (Refer to GROUP 23A − CVT, Troubleshooting ). Q: Is the diagnosis code set? YES : Perform the relevant troubleshooting. NO : Go to Step 3.
STEP 5. Check whether the diagnosis code is reset. Q: Is diagnosis code No.C1633 set? YES : Return to Step 1. NO : This diagnosis is complete.
Code No.C1707: Implausible Coding Data
•
• •
•
CAUTION If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines. Whenever the ECU is replaced, ensure that the communication circuit is normal. When the diagnosis code No.C1707 is set in 4WD-ECU, the diagnosis code may also be set in ETACS-ECU. When the diagnosis code is set in ETACS-ECU, perform the diagnosis of the diagnosis code for ETACS-ECU first. When the ETACS-ECU of vehicles without KOS is replaced, the encrypted code of the ignition key needs to be registered to the ETACS-ECU. (If the encrypted code is not registered, the engine cannot be started. Register the encrypted code as described in GROUP 54A, Immobilizer System − How to Register Key ID .)
OPERATION 4WD-ECU receives the vehicle information stored in
ETACS-ECU via CAN bus lines.
DIAGNOSIS CODE SET CONDITION This diagnosis code is set when the abnormality below is detected: • The vehicle information received from ETACS-ECU is not correct.
PROBABLE CAUSES • • • •
Malfunction of the CAN bus line ETACS-ECU malfunction Malfunction of 4WD-ECU ETACS-ECU has been interchanged between two vehicles.
DIAGNOSIS PROCEDURE STEP 1. M.U.T.-III CAN bus diagnostics. Use M.U.T.-III to perform the CAN bus diagnosis. Q: Is the check result normal?
27C-28
ELECTRONICALLY CONTROLLED 4WD TROUBLESHOOTING
YES : Go to Step 2. NO : Repair the CAN bus lines (Refer to GROUP
54C − Troubleshooting ).
STEP 2. M.U.T.-III other system diagnosis code. Check the ETACS diagnosis code (Refer to GROUP 54A − Troubleshooting ). Q: Is the diagnosis code set? YES : Perform the relevant troubleshooting. NO : Go to Step 3.
STEP 3. ETACS-ECU coding data check Using the M.U.T.-III, check if there is the engine-related, T/M-related, ASC-related abnormality to the coding data stored in the ETACS-ECU (Refer to GROUP 00 − Coding Reference Table ). Q: Is the check result normal? YES : Go to Step 4. NO : Repair the coding data or replace
ETACS-ECU. Then go to Step 6.
STEP 4. Check the part number of ETACS-ECU Check the part number of ETACS-ECU. Q: Is the check result normal? YES : Go to Step 5. NO : Replace the ETACS-ECU (Refer to GROUP
54A − ETACS-ECU ), and then go to Step 6.
STEP 5. Check whether the diagnosis code is reset. Q: Is diagnosis code No.C1707 set? YES : Replace the 4WD-ECU (Refer to P.27C-51).
Then go to Step 6 . NO : Intermittent malfunction. (Refer to GROUP
00 − How to Cope with Intermittent Malfunction ).
STEP 6. Check whether the diagnosis code is reset. Q: Is diagnosis code No.C1707 set? YES : Return to Step 1. NO : This diagnosis is complete.
Code No.C2100: Power supply low voltage
CAUTION • When the ETACS-ECU of vehicles without KOS is replaced, the encrypted code of the ignition key needs to be registered to the ETACS-ECU. (If the encrypted code is not registered, the engine cannot be started. Register the encrypted code as described in GROUP 54A, Immobilizer System − How to Register Key ID .)
OPERATION 4WD-ECU power supply is provided from the battery via ETACS-ECU.
DIAGNOSIS CODE SET CONDITIONS This diagnosis code is set when the abnormality below is detected: • Voltage between the battery and ETACS-ECU: Less than 9 V
PROBABLE CAUSES • Battery failure • Malfunction of charging system • Malfunction of ETACS-ECU (power supply circuit system) • Damaged harness wires and connectors
• Malfunction of electronic control coupling solenoid • Malfunction of 4WD-ECU
DIAGNOSIS PROCEDURE STEP 1. M.U.T.-III other system diagnosis code. Check the ETACS diagnosis code (Refer to GROUP 54A − Troubleshooting ). Q: Is the diagnosis code set? YES : Perform the relevant troubleshooting. NO : Go to Step 2.
STEP 2. Check the battery. Refer to GROUP 54A − Battery Test . Q: Is the check result normal? YES : Go to Step 4. NO : Charge or replace the battery. Then go to
Step 3. STEP 3. Check the charging system. Refer to GROUP 16 − Charging System . Q: Is the check result normal?
ELECTRONICALLY CONTROLLED 4WD TROUBLESHOOTING YES : Go to Step 4. NO : Repair or replace the charging system
component(s). STEP 4. Voltage measurement at 4WD-ECU connector Disconnect the connector, and measure the voltage between terminal BAtt and body earth at the wiring harness side. OK: System voltage Q: Is the check result normal? YES : Go to Step 6. NO : Repair the defective connector or the wiring
harness. Then go to Step 5. STEP 5. M.U.T.-III data list. Check the following data list (Refer to P.27C-45). • Item No.31: Battery voltage (CAN input) Q: Is the check result normal? YES : Intermittent malfunction (Refer to GROUP
00 − How to Cope with Intermittent Malfunction ). NO : Replace the ETACS-ECU. Then go to Step 10.
STEP 6. Check the wiring harness between 4WD-ECU connector terminal GND1 and body earth. Check the earth line for open circuit. Q: Is the check result normal? YES : Go to Step 7. NO : Repair the defective connector or the wiring
harness. Then go to Step 10.
27C-29
STEP 7. Check the wiring harness between electronic control coupling solenoid connector and 4WD-ECU connector terminal SOL+, SOL-. Check the power supply, earth line for short circuit. Q: Is the check result normal? YES : Go to Step 8. NO : Repair the defective connector or the wiring
harness. Then go to Step 10. STEP 8. Check of the electronic control coupling solenoid Refer to P.27C-49. Q: Is the check result normal? YES : Go to Step 9. NO : Replace the electronic control coupling
(Refer to P.27C-53). Then go to Step 10. STEP 9. M.U.T.-III data list. Check the following data list (Refer to P.27C-45). • Item No.31: Battery voltage (CAN input) Q: Is the check result normal? YES : Intermittent malfunction (Refer to GROUP
00 − How to Cope with Intermittent Malfunction ). NO : Replace the 4WD-ECU (Refer to P.27C-51). Then go to Step 10.
STEP 10. Check whether the diagnosis code is reset. Q: Is diagnosis code No.C2100 set? YES : Return to Step 1. NO : This diagnosis is complete.
Code No.C2101: Power supply high voltage
OPERATION 4WD-ECU power supply is provided from the battery via ETACS-ECU.
DIAGNOSIS CODE SET CONDITIONS This diagnosis code is set when the abnormality below is detected: • Voltage between the battery and ETACS-ECU: More than 18 V
PROBABLE CAUSES • Malfunction of charging system • Loose battery terminal
• Damaged harness wires and connectors • Malfunction of 4WD-ECU • ETACS-ECU malfunction
DIAGNOSIS PROCEDURE STEP 1. M.U.T.-III other system diagnosis code. Check the ETACS diagnosis code (Refer to GROUP 54A − Troubleshooting ). Q: Is the diagnosis code set? YES : Perform the relevant troubleshooting. NO : Go to Step 2.
27C-30
ELECTRONICALLY CONTROLLED 4WD TROUBLESHOOTING
STEP 2. Battery terminal check Check that the battery terminal is not loose. Q: Is the check result normal? YES : Go to Step 3. NO : Securely install the battery terminal. Then
go to Step 3. STEP 3. Check the charging system. Refer to GROUP 16 − Charging System . Q: Is the check result normal? YES : Go to Step 4. NO : Repair or replace the charging system
component(s). STEP 4. Check the battery. Refer to GROUP 54A − Battery Test .
STEP 5. Voltage measurement at 4WD-ECU connector Disconnect the connector, and measure the voltage between terminal BATT and body earth at the wiring harness side. OK: System voltage Q: Is the check result normal? YES : Go to Step 6. NO : Repair the defective connector or the wiring
harness. Then go to Step 7. STEP 6. M.U.T.-III data list. Check the following data list (Refer to P.27C-45). • Item No.31: Battery voltage (CAN input) Q: Is the check result normal? YES : Intermittent malfunction (Refer to GROUP
00 − How to Cope with Intermittent Malfunction ). NO : Replace the 4WD-ECU (Refer to P.27C-51). Then go to Step 7.
Q: Is the check result normal? YES : Go to Step 5. NO : Replace the battery. Then go to Step 5.
STEP 7. Check whether the diagnosis code is reset. Q: Is diagnosis code No.C2101 set? YES : Return to Step 1. NO : This diagnosis is complete.
Code No.C2205: Steering Wheel Sensor Internal Error
CAUTION • If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines. • Whenever the ECU is replaced, ensure that the CAN bus lines are normal. • When the steering wheel sensor is replaced, calibrate the steering wheel sensor (Refer to GROUP 35C − On-vehicle Service ), and reset the steering wheel sensor correction amount stored in the 4WD-ECU. (Item No. 1: SAS adjusted value P.27C-48).
OPERATION 4WD-ECU communicates with the steering wheel sensor via the CAN bus lines.
DIAGNOSIS CODE SET CONDITION This diagnosis code is set when the abnormality below is detected: • The failure status information by the self-diagnosis of the steering wheel sensor.
PROBABLE CAUSES • Malfunction of the steering wheel sensor • Malfunction of 4WD-ECU
DIAGNOSIS PROCEDURE STEP 1. M.U.T.-III CAN bus diagnostics. Use M.U.T.-III to perform the CAN bus diagnosis. Q: Is the check result normal? YES : Go to Step 3. NO : Repair the CAN bus lines (Refer to GROUP
54C − Troubleshooting ). After repairing the CAN bus line, go to Step 2.
ELECTRONICALLY CONTROLLED 4WD TROUBLESHOOTING
27C-31
STEP 2. Check whether the diagnosis code is reset.
STEP 4. Check whether the diagnosis code is reset.
Q: Is diagnosis code No.C2205 set? YES : Go to Step 3. NO : This diagnosis is complete.
Q: Is diagnosis code No.C2205 set? YES : Replace the 4WD-ECU (Refer to P.27C-51).
Then go to Step 5. NO : Intermittent malfunction (Refer to GROUP
STEP 3. M.U.T.-III data list. Check the following data list (Refer to P.27C-45). • Item No.8: Steering angle sensor Q: Is the check result normal? YES : Go to Step 4. NO : Replace the steering wheel sensor (Refer to
GROUP 35C − Steering Wheel Sensor ). Then go to Step 5.
00 − How to Cope with Intermittent Malfunction ).
STEP 5. Check whether the diagnosis code is reset. Q: Is diagnosis code No.C2205 set? YES : Return to Step 1. NO : This diagnosis is complete.
Code No.U0100: Engine CAN Timeout
CAUTION • If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines. • Whenever the ECU is replaced, ensure that the CAN bus lines are normal.
OPERATION 4WD-ECU communicates with the engine-ECU via the CAN bus lines.
YES : Go to Step 2. NO : Repair the CAN bus lines (Refer to GROUP
54C − Troubleshooting ). After repairing the CAN bus line, go to Step 2.
STEP 2. M.U.T.-III other system diagnosis code. Check the engine diagnosis code (Refer to GROUP 13A −Troubleshooting ). Q: Is the diagnosis code set? YES : Perform the relevant troubleshooting. NO : Go to Step 3.
DIAGNOSIS CODE SET CONDITION This diagnosis code is set when the abnormality below is detected: • The signal sent from the engine-ECU cannot be received for a certain period.
PROBABLE CAUSES • Malfunction of the CAN bus line • Malfunction of power supply circuit system (engine-ECU) • Malfunction of ECU (engine-ECU) • Malfunction of 4WD-ECU
DIAGNOSIS PROCEDURE STEP 1. M.U.T.-III CAN bus diagnostics. Use M.U.T.-III to perform the CAN bus diagnosis. Q: Is the check result normal?
STEP 3. Check whether the diagnosis code is reset. Q: Is diagnosis code No.U0100 set? YES : Replace the 4WD-ECU (Refer to P.27C-51).
Then go to Step 4. NO : Intermittent malfunction (Refer to GROUP
00 − How to Cope with Intermittent Malfunction ).
STEP 4. Check whether the diagnosis code is reset. Q: Is diagnosis code No.U0100 set? YES : Return to Step 1. NO : This diagnosis is complete.
27C-32
ELECTRONICALLY CONTROLLED 4WD TROUBLESHOOTING
Code No.U0101: T/M CAN Timeout
CAUTION • If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines. • Whenever the ECU is replaced, ensure that the CAN bus lines are normal. • When the ETACS-ECU of vehicles without KOS is replaced, the encrypted code of the ignition key needs to be registered to the ETACS-ECU. (If the encrypted code is not registered, the engine cannot be started. Register the encrypted code as described in GROUP 54A, Immobilizer System − How to Register Key ID .)
OPERATION 4WD-ECU communicates with CVT-ECU via the CAN bus lines.
DIAGNOSIS CODE SET CONDITION This diagnosis code is set when the abnormality below is detected: • The signal sent from the CVT-ECU cannot be received for a certain period.
PROBABLE CAUSES • Malfunction of the CAN bus line • Malfunction of power supply circuit system (CVT-ECU) • Malfunction of ECU (CVT-ECU) • Malfunction of 4WD-ECU • ETACS coding failure
DIAGNOSIS PROCEDURE
YES : Go to Step 2. NO : Repair the CAN bus lines (Refer to GROUP
54C − Troubleshooting ).
STEP 2. M.U.T.-III other system diagnosis code. Check the CVT diagnosis code (Refer to GROUP 23A − CVT, Troubleshooting ). Q: Is the diagnosis code set? YES : Perform the relevant troubleshooting. NO : Go to Step 3.
STEP 3. ETACS-ECU coding data check. Check the transmission coding data stored in ETACS-ECU for any abnormality (Refer to GROUP 00 − Coding Reference Table ). Q: Is the check result normal? YES : Go to Step 4. NO : Replace the ETACS-ECU. Then go to Step
5. STEP 4. Check whether the diagnosis code is reset. Q: Is diagnosis code No.U0101 set? YES : Replace the 4WD-ECU (Refer to P.27C-51).
Then go to Step 5 . NO : Intermittent malfunction (Refer to GROUP
00 − How to Cope with Intermittent Malfunction ).
STEP 5. Check whether the diagnosis code is reset. Q: Is diagnosis code No.U0101 set? YES : Return to Step 1. NO : This diagnosis is complete.
STEP 1. M.U.T.-III CAN bus diagnostics. Use M.U.T.-III to perform the CAN bus diagnosis. Q: Is the check result normal?
Code No.U0121: ABS/ASC CAN Timeout
CAUTION • If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines. • Whenever the ECU is replaced, ensure that
the CAN bus lines are normal.
OPERATION 4WD-ECU communicates with the ABS/ASC-ECU via the CAN bus lines.
ELECTRONICALLY CONTROLLED 4WD TROUBLESHOOTING
DIAGNOSIS CODE SET CONDITION This diagnosis code is set when the abnormality below is detected: • The signal sent from the ABS/ASC-ECU cannot be received for a certain period.
PROBABLE CAUSES • Malfunction of the CAN bus line • Malfunction of power supply circuit system (ABS/ASC-ECU) • Malfunction of ECU (ABS/ASC-ECU) • Malfunction of 4WD-ECU
DIAGNOSIS PROCEDURE STEP 1. M.U.T.-III CAN bus diagnostics. Use M.U.T.-III to perform the CAN bus diagnosis. Q: Is the check result normal? YES : Go to Step 2. NO : Repair the CAN bus lines (Refer to GROUP
54C − Troubleshooting ).
27C-33
STEP 2. M.U.T.-III other system diagnosis code. Check the ABS diagnosis code (Refer to GROUP 35B − Troubleshooting ) or the ASC diagnosis code (Refer to GROUP 35C − Troubleshooting ) . Q: Is the diagnosis code set? YES : Perform the relevant troubleshooting. NO : Go to Step 3.
STEP 3. Check whether the diagnosis code is reset. Q: Is diagnosis code No.U0121 set? YES : Replace the 4WD-ECU (Refer to P.27C-51).
Then go to Step 4. NO : Intermittent malfunction (Refer to GROUP 00 − How to Cope with Intermittent Malfunction ). STEP 4. Check whether the diagnosis code is reset. Q: Is diagnosis code No.U0121 set? YES : Return to Step 1. NO : This diagnosis is complete.
Code No.U0126: Steering Wheel Sensor CAN Timeout
CAUTION • If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines. • Whenever the ECU is replaced, ensure that the CAN bus lines are normal. • When the steering wheel sensor is replaced, calibrate the steering wheel sensor (Refer to GROUP 35C − On-vehicle Service ), and reset the steering wheel sensor correction amount stored in the 4WD-ECU. (Item No. 1: SAS adjusted value P.27C-48).
OPERATION 4WD-ECU communicates with the steering wheel sensor via the CAN bus lines.
DIAGNOSIS CODE SET CONDITION This diagnosis code is set when the abnormality below is detected: • The signal sent from the steering wheel sensor cannot be received for a certain period.
PROBABLE CAUSES • Malfunction of the CAN bus line • Malfunction of power supply circuit system (steering wheel sensor) • Malfunction of the steering wheel sensor • Malfunction of 4WD-ECU
DIAGNOSIS PROCEDURE STEP 1. M.U.T.-III CAN bus diagnostics. Use M.U.T.-III to perform the CAN bus diagnosis. Q: Is the check result normal? YES : Go to Step 2. NO : Repair the CAN bus lines (Refer to GROUP
54C − Troubleshooting ).
STEP 2. M.U.T.-III data list. Check the following data list (Refer to P.27C-45). • Item No.8: Steering angle sensor Q: Is the check result normal?
27C-34
ELECTRONICALLY CONTROLLED 4WD TROUBLESHOOTING
YES : Intermittent malfunction (Refer to GROUP
00 − How to Cope with Intermittent Malfunction ). NO : Replace the steering wheel sensor (Refer to GROUP 35C − Steering Wheel Sensor ). Then go to Step 3. STEP 3. Check whether the diagnosis code is reset. Q: Is diagnosis code No.U0126 set?
YES : Replace the 4WD-ECU (Refer to P.27C-51).
Then go to Step 4. NO : Intermittent malfunction (Refer to GROUP
00 − How to Cope with Intermittent Malfunction ).
STEP 4. Check whether the diagnosis code is reset. Q: Is diagnosis code No.U0126 set? YES : Return to Step 1. NO : This diagnosis is complete.
Code No. U0141: ETACS CAN Timeout
CAUTION • If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines. • Whenever the ECU is replaced, ensure that the CAN bus lines are normal.
OPERATION 4WD-ECU communicates with the ETACS-ECU via the CAN bus lines.
DIAGNOSIS CODE SET CONDITION This diagnosis code is set when the abnormality below is detected: • The signal sent from the ETACS-ECU cannot be received for a certain period.
PROBABLE CAUSES • Malfunction of the CAN bus line • Malfunction of power supply circuit system (ETACS-ECU) • Malfunction of ECU (ETACS-ECU) • Malfunction of 4WD-ECU
DIAGNOSIS PROCEDURE STEP 1. M.U.T.-III CAN bus diagnostics. Use M.U.T.-III to perform the CAN bus diagnosis. Q: Is the check result normal?
YES : Go to Step 2. NO : Repair the CAN bus lines. (Refer to GROUP
54C − Troubleshooting ).
STEP 2. M.U.T.-III diagnosis code. Check the ETACS diagnosis code (Refer to GROUP 54A − Troubleshooting ). Q: Is the diagnosis code set? YES : Perform the relevant troubleshooting. NO : Go to Step 3.
STEP 3. Check whether the diagnosis code is reset. Q: Is diagnosis code No.U0141 set? YES : Replace the 4WD-ECU (Refer to P.27C-51).
Then go to Step 4. NO : Intermittent malfunction (Refer to GROUP
00 − How to Cope with Intermittent Malfunction ).
STEP 4. Check whether the diagnosis code is reset. Q: Is diagnosis code No.U0141 set? YES : Return to Step 1. NO : This diagnosis is complete.
ELECTRONICALLY CONTROLLED 4WD TROUBLESHOOTING
27C-35
Code No.U0401: Engine CAN Message
CAUTION • If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines. • Whenever the ECU is replaced, ensure that the CAN bus lines are normal.
OPERATION
STEP 2. M.U.T.-III diagnosis code. Check the engine diagnosis code (Refer to GROUP 13A − Troubleshooting ). Q: Is the diagnosis code set? YES : Perform the relevant troubleshooting. NO : Go to Step 3.
4WD-ECU communicates with the engine-ECU via the CAN bus lines.
STEP 3. M.U.T.-III data list. Check the following data list (Refer to P.27C-45). • Item No.12: Engine speed
DIAGNOSIS CODE SET CONDITION
Q: Is the check result normal? YES : Intermittent malfunction (Refer to GROUP
This diagnosis code is set when the abnormality below is detected: • Abnormality is detected in the signal received from the engine-ECU.
PROBABLE CAUSES • • • •
Malfunction of the CAN bus line Engine malfunction Malfunction of engine-ECU Malfunction of 4WD-ECU
00 − How to Cope with Intermittent Malfunction ). NO : Go to Step 4.
STEP 4. Check whether the diagnosis code is reset. Q: Is diagnosis code No.U0401 set? YES : Replace the 4WD-ECU (Refer to P.27C-51).
Then go to Step 5. NO : Intermittent malfunction (Refer to GROUP
DIAGNOSIS PROCEDURE STEP 1. M.U.T.-III CAN bus diagnostics. Use M.U.T.-III to perform the CAN bus diagnosis. Q: Is the check result normal? YES : Go to Step 2. NO : Repair the CAN bus lines (Refer to GROUP
54C − Troubleshooting ).
00 − How to Cope with Intermittent Malfunction ).
STEP 5. Check whether the diagnosis code is reset. Q: Is diagnosis code No.U0401 set? YES : Return to Step 1. NO : This diagnosis is complete.
Code No.U0428: Steering Wheel Sensor CAN Message
CAUTION • If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines. • Whenever the ECU is replaced, ensure that the CAN bus lines are normal. • When the steering wheel sensor is replaced, calibrate the steering wheel sensor (Refer to GROUP 35C − On-vehicle Service ), and reset the steering wheel sensor correction amount stored in the 4WD-ECU. (Item No. 1: SAS adjusted value P.27C-48).
OPERATION 4WD-ECU communicates with the steering wheel sensor via the CAN bus lines.
DIAGNOSIS CODE SET CONDITION This diagnosis code is set when the abnormality below is detected: • Abnormality is detected in the signal received from the steering wheel sensor.
PROBABLE CAUSES • Malfunction of the CAN bus line • Malfunction of the steering wheel sensor • Malfunction of 4WD-ECU
27C-36
ELECTRONICALLY CONTROLLED 4WD TROUBLESHOOTING
DIAGNOSIS PROCEDURE STEP 1. M.U.T.-III CAN bus diagnostics. Use M.U.T.-III to perform the CAN bus diagnosis. Q: Is the check result normal? YES : Go to Step 2. NO : Repair the CAN bus lines (Refer to GROUP
STEP 3. Check whether the diagnosis code is reset. Q: Is diagnosis code No.U0428 set? YES : Replace the 4WD-ECU (Refer to P.27C-51).
Then go to Step 4. NO : Intermittent malfunction (Refer to GROUP
00 − How to Cope with Intermittent Malfunction ).
54C − Troubleshooting ).
STEP 2. M.U.T.-III data list. Check the following data list (Refer to P.27C-45). • Item No.8: Steering angle sensor Q: Is the check result normal? YES : Intermittent malfunction (Refer to GROUP
STEP 4. Check whether the diagnosis code is reset. Q: Is diagnosis code No.U0428 set? YES : Return to Step 1. NO : This diagnosis is complete.
00 − How to Cope with Intermittent Malfunction ). NO : Replace the steering wheel sensor (Refer to GROUP 35C − Steering Wheel Sensor ). Then go to Step 3.
Code No.U0431: ETACS CAN Message
CAUTION • If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines. • Whenever the ECU is replaced, ensure that the CAN bus lines are normal. • When the ETACS-ECU of vehicles without KOS is replaced, the encrypted code of the ignition key needs to be registered to the ETACS-ECU. (If the encrypted code is not registered, the engine cannot be started. Register the encrypted code as described in GROUP 54A, Immobilizer System − How to Register Key ID .)
OPERATION 4WD-ECU communicates with the ETACS-ECU via the CAN bus lines.
DIAGNOSIS CODE SET CONDITION This diagnosis code is set when the abnormality below is detected: • Abnormality is detected in the signal received from ETACS-ECU.
PROBABLE CAUSES • Malfunction of the CAN bus line • Malfunction of ETACS-ECU power supply circuit system • ETACS-ECU malfunction • Malfunction of 4WD-ECU • Coding not implemented
DIAGNOSIS PROCEDURE STEP 1. M.U.T.-III CAN bus diagnostics. Use M.U.T.-III to perform the CAN bus diagnosis. Q: Is the check result normal? YES : Go to Step 2. NO : Repair the CAN bus lines (Refer to GROUP
54C − Troubleshooting ).
STEP 2. M.U.T.-III diagnosis code. Check if diagnosis code No.U1195 is set (Refer to P.27C-37). Q: Is the diagnosis code set? YES : Perform the relevant troubleshooting. NO : Go to Step 3.
ELECTRONICALLY CONTROLLED 4WD TROUBLESHOOTING
STEP 3. M.U.T.-III other system diagnosis code. Check the ETACS diagnosis code (Refer to GROUP 54A − Troubleshooting ). Q: Is the diagnosis code set? YES : Perform the relevant troubleshooting. NO : Go to Step 4.
STEP 4. M.U.T.-III data list. Check the ETACS data list below (Refer to GROUP 54A − ETACS ). • Item No.252: Ambient temperature sensor • Item No.254: IG voltage Q: Is the check result normal? YES : Go to Step 5. NO : Replace the ETACS-ECU. Then go to Step
27C-37
STEP 5. Check whether the diagnosis code is reset. Q: Is diagnosis code No.U0431 set? YES : Replace the 4WD-ECU (Refer to P.27C-51).
Then go to Step 6. NO : Intermittent malfunction. (Refer to GROUP
00 − How to Cope with Intermittent Malfunction ).
STEP 6. Check whether the diagnosis code is reset. Q: Is diagnosis code No.U0431 set? YES : Return to Step 1. NO : This diagnosis is complete.
5.
Code No.U1073: Bus-Off
CAUTION • If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines. • Whenever the ECU is replaced, ensure that the CAN bus lines are normal.
• CAN C-bus off interruption is detected.
PROBABLE CAUSES • The CAN bus line is defective. • Malfunction of 4WD-ECU • ECU malfunction of other system
DIAGNOSIS CODE SET CONDITION This diagnosis code is set when the abnormality below is detected:
Code No.U1195: Coding not Completed
•
• •
•
CAUTION If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines. Whenever the ECU is replaced, ensure that the CAN bus lines are normal. When the diagnosis code No.U1195 is set in 4WD-ECU, the diagnosis code may also be set in ETACS-ECU. When the diagnosis code is set in ETACS-ECU, perform the diagnosis of the diagnosis code for ETACS-ECU first. When the ETACS-ECU of vehicles without KOS is replaced, the encrypted code of the ignition key needs to be registered to the ETACS-ECU. (If the encrypted code is not reg-
istered, the engine cannot be started. Register the encrypted code as described in GROUP 54A, Immobilizer System − How to Register Key ID .)
OPERATION 4WD-ECU receives the vehicle information stored in ETACS-ECU via CAN bus lines.
DIAGNOSIS CODE SET CONDITION This diagnosis code is set when the abnormality below is detected: • Coding has not been performed.
PROBABLE CAUSES • Malfunction of the CAN bus line • Coding not implemented
27C-38
ELECTRONICALLY CONTROLLED 4WD TROUBLESHOOTING
• ETACS-ECU malfunction • Malfunction of 4WD-ECU
DIAGNOSIS PROCEDURE STEP 1. M.U.T.-III CAN bus diagnostics. Use M.U.T.-III to perform the CAN bus diagnosis. Q: Is the check result normal? YES : Go to Step 2. NO : Repair the CAN bus lines (Refer to GROUP
54C − Troubleshooting ).
STEP 2. M.U.T.-III other system diagnosis code. Check the ETACS diagnosis code (Refer to GROUP 54A − Troubleshooting ).
STEP 3. ETACS-ECU coding data check Using the M.U.T.-III, check if there is the engine-related, T/M-related, ASC-related abnormality to the coding data stored in the ETACS-ECU (Refer to GROUP 00 − Coding Reference Table ). Q: Is the check result normal? YES : Go to Step 4. NO : Replace the ETACS-ECU. Then go to Step
5. STEP 4. Check whether the diagnosis code is reset. Q: Is diagnosis code No.U1195 set? YES : Replace the 4WD-ECU (Refer to P.27C-51).
Then go to Step 5. NO : Intermittent malfunction (Refer to GROUP
Q: Is the diagnosis code set? YES : Perform the relevant troubleshooting. NO : Go to Step 3.
00 − How to Cope with Intermittent Malfunction ).
STEP 5. Check whether the diagnosis code is reset. Q: Is diagnosis code No.U1195 set? YES : Return to Step 1. NO : This diagnosis is complete.
Code No.U119A: Chassis No. mismatch
CAUTION • If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines. • Whenever the ECU is replaced, ensure that the CAN bus lines are normal. • When the diagnosis code No.U119A is set in 4WD-ECU, the diagnosis code may also be set in ETACS-ECU. When the diagnosis code is set in ETACS-ECU, perform the diagnosis of the diagnosis code for ETACS-ECU first.
OPERATION 4WD-ECU receives the chassis number stored in ETACS-ECU via CAN bus lines.
DIAGNOSIS CODE SET CONDITION This diagnosis code is set when the abnormality below is detected: • The chassis number received from ETACS-ECU is not correct.
PROBABLE CAUSES • • • • •
Malfunction of the CAN bus line Chassis number not written ETACS-ECU malfunction Malfunction of engine-ECU Malfunction of 4WD-ECU
DIAGNOSIS PROCEDURE STEP 1. M.U.T.-III CAN bus diagnostics Use the M.U.T.-III to diagnose the CAN bus lines. Q: Is the check result normal? YES : Go to Step 2. NO : Repair the CAN bus line (Refer to GROUP
54C − Troubleshooting ).
STEP 2. M.U.T.-III other system diagnosis code Check the engine diagnosis code (Refer to GROUP 13A − Troubleshooting ). Q: Is the diagnosis code set? YES : Perform the relevant troubleshooting. NO : Go to Step 3.
ELECTRONICALLY CONTROLLED 4WD TROUBLESHOOTING
27C-39
STEP 3. Check whether the diagnosis code is reset.
STEP 4. Check whether the diagnosis code is reset.
Q: Is diagnosis code No.U119A set? YES : Replace the 4WD-ECU (Refer to P.27C-51).
Q: Is diagnosis code No.U119A set? YES : Return to Step 1. NO : This diagnosis is complete.
Then go to Step 4. NO : Intermittent malfunction (Refer to GROUP
00 − How to Cope with Intermittent Malfunction ).
Code No.U1425: T/M CAN Message
CAUTION • If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines. • Whenever the ECU is replaced, ensure that the CAN bus lines are normal.
OPERATION
STEP 2. M.U.T.-III other system diagnosis code. Check the CVT diagnosis code (Refer to GROUP 23A − CVT, Troubleshooting ). Q: Is the diagnosis code set? YES : Perform the relevant troubleshooting. NO : Go to Step 3.
4WD-ECU communicates with CVT-ECU via the CAN bus lines.
STEP 3. M.U.T.-III data list. Check the following data list (Refer to P.27C-45). • Item No.13: A/T Gear position
DIAGNOSIS CODE SET CONDITION
Q: Is the check result normal? YES : Intermittent malfunction (Refer to GROUP
This diagnosis code is set when the abnormality below is detected: • Abnormality is detected in the gear shift signal received from the CVT-ECU.
PROBABLE CAUSES • Malfunction of the CAN bus line • Malfunction of CVT-ECU • Malfunction of 4WD-ECU
00 − How to Cope with Intermittent Malfunction ). NO : Go to Step 4.
STEP 4. Check whether the diagnosis code is reset. Q: Is diagnosis code No.U1425 set? YES : Replace the 4WD-ECU (Refer to P.27C-51).
Then go to Step 5.
DIAGNOSIS PROCEDURE STEP 1. M.U.T.-III CAN bus diagnostics. Use M.U.T.-III to perform the CAN bus diagnosis. Q: Is the check result normal? YES : Go to Step 2. NO : Repair the CAN bus lines (Refer to GROUP
54C − Troubleshooting ).
NO : Intermittent malfunction (Refer to GROUP
00 − How to Cope with Intermittent Malfunction ).
STEP 5. Check whether the diagnosis code is reset. Q: Is diagnosis code No.U1425 set? YES : Return to Step 1. NO : This diagnosis is complete.
27C-40
ELECTRONICALLY CONTROLLED 4WD TROUBLESHOOTING
Code No.U1427: Implausible Wheel Speed Data
CAUTION • If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines. • Whenever the ECU is replaced, ensure that the CAN bus lines are normal.
OPERATION 4WD-ECU communicates with the ABS/ASC-ECU via the CAN bus lines.
DIAGNOSIS CODE SET CONDITION This diagnosis code is set when the abnormality below is detected: • Abnormality is detected in the wheel speed sensor signal received from the ABS/ASC-ECU.
PROBABLE CAUSES • • • •
Malfunction of the CAN bus line Malfunction of the wheel speed sensor Malfunction of ABS/ASC-ECU Malfunction of 4WD-ECU
STEP 2. M.U.T.-III other system diagnosis code. Check the ABS diagnosis code (Refer to GROUP 35B − Troubleshooting ) or the ASC diagnosis code (Refer to GROUP 35C − Troubleshooting ) . Q: Is the diagnosis code set? YES : Perform the relevant troubleshooting. NO : Go to Step 3.
STEP 3. M.U.T.-III data list. Check the data list of the relevant wheel speed sensor (Refer to P.27C-45). • Item No.18: FL Wheel speed sensor • Item No.19: FR Wheel speed sensor • Item No.20: RL Wheel speed sensor • Item No.21: RR Wheel speed sensor Q: Is the check result normal? YES : Intermittent malfunction (Refer to GROUP
00 − How to Cope with Intermittent Malfunction ). NO : Go to Step 4.
DIAGNOSIS PROCEDURE
STEP 4. Check whether the diagnosis code is reset.
STEP 1. M.U.T.-III CAN bus diagnostics. Use M.U.T.-III to perform the CAN bus diagnosis.
Q: Is diagnosis code No.U1427 set? YES : Replace the 4WD-ECU (Refer to P.27C-51).
Then go to Step 5.
Q: Is the check result normal? YES : Go to Step 2. NO : Repair the CAN bus lines (Refer to GROUP
NO : Intermittent malfunction (Refer to GROUP
00 − How to Cope with Intermittent Malfunction ).
54C − Troubleshooting ).
STEP 5. Check whether the diagnosis code is reset. Q: Is diagnosis code No.U1427 set? YES : Return to Step 1. NO : This diagnosis is complete.
Code No.U1428: Sensor Cluster CAN Message
CAUTION • If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines. • Whenever the ECU is replaced, ensure that the CAN bus lines are normal. • Do not drop the G and yaw rate sensor or sub-
ject it to a shock. • When G and yaw rate sensor is replaced, calibrate G and yaw rate sensor (refer to GROUP 35C − On-vehicle Service )
OPERATION 4WD-ECU receives the G and yaw rate sensor data from ASC-ECU via the CAN communication.
ELECTRONICALLY CONTROLLED 4WD
27C-41
TROUBLESHOOTING
DIAGNOSIS CODE SET CONDITIONS This diagnosis code is set when the abnormality below is detected: • Abnormality is detected in the G and yaw rate sensor signal received from the ASC-ECU.
PROBABLE CAUSES • Malfunction of G and yaw rate sensor • Malfunction of G and yaw rate sensor power supply • Damaged connector(s) • Malfunction of the CAN bus line • Malfunction of 4WD-ECU • Malfunction of ASC-ECU
DIAGNOSIS PROCEDURE STEP 1. M.U.T.-III CAN bus diagnostics. Use M.U.T.-III to perform the CAN bus diagnosis. Q: Is the check result normal? YES : Go to Step 2. NO : Repair the CAN bus lines. (Refer to GROUP
54C − Troubleshooting ).
STEP 3. M.U.T.-III diagnosis code. Check if the diagnosis code No.C123C, C1242 is set (Refer to P.27C-8). Q: Is the check result normal? YES : Perform the relevant troubleshooting. NO : Go to Step 4.
STEP 4. M.U.T.-III data list. Check the data list below (Refer to P.27C-45). • Item No.22: Yaw rate sensor • Item No.23: Lateral G sensor • Item No.24: Longitudinal G sensor Q: Is the check result normal? YES : Go to Step 5. NO : Replace the hydraulic unit (Refer to GROUP
35C − Hydraulic unit (integrated with G and yaw rate sensor) ). Then go to Step 6.
STEP 5. Check whether the diagnosis code is reset. Q: Is diagnosis code No.U1428 set? YES : Replace the 4WD-ECU (Refer to P.27C-51).
Then go to Step 6. STEP 2. M.U.T.-III other system diagnosis code. Check the ASC diagnosis code (Refer to GROUP 35C − Troubleshooting ). Q: Is the diagnosis code set? YES : Perform the relevant troubleshooting. NO : Go to Step 3.
NO : Intermittent malfunction (Refer to GROUP
00 − How to Cope with Intermittent Malfunction ).
STEP 6. Check whether the diagnosis code is reset. Q: Is diagnosis code No.U1428 set? YES : Return to Step 1. NO : This diagnosis is complete.
TROUBLE SYMPTOM CHART M1274000900127
CAUTION During diagnosis, a diagnosis code associated with other system may be set when the ignition switch is turned on with connector(s) disconnected. On completion, confirm all systems for diagnosis code(s). If diagnosis code(s) are set, erase them all. Trouble symptom
Inspection procedure
Reference pages or actions
M.U.T.-III cannot communicate with the electronically controller 4WD system.
1
P.27C-42
Shifting the 4WD switch does not change the mode
2
P.27C-43
The tight corner braking phenomenon* appears with the 4WD switch in the 4WD ECO or 4WD AUTO position. NOTE: The vehicle is tuned so that the tight corner braking phenomenon appears at a certain level with the drive mode in the LOCK position.
3
P.27C-44
27C-42
ELECTRONICALLY CONTROLLED 4WD TROUBLESHOOTING
Trouble symptom
Inspection procedure
Reference pages or actions
No diagnosis code is set even when the 4WD-E/LOCK indicator lamps flash.
4
P.27C-45
NOTE: *Tight corner braking phenomenon: When a 4WD vehicle makes sharp cornering in a paved road at low speed (ex. parallel parking), there is a difference in turning radius between front and rear wheels. If such a difference can no longer be compensated by tyre slippage, the vehicle behaves as if it is under braking.
SYMPTOM PROCEDURES
Inspection Procedure 1: M.U.T.-III cannot Communicate with the Electronically Controller 4WD System.
COMMENTS ON TROUBLE SYMPTOM If M.U.T.-III cannot communicate with the electronically controlled 4WD system, the CAN bus lines may have a problem. If the electronically controller 4WD system is not in operation (in case of no 4WD operation), the 4WD-ECU power supply circuit system or 4WD-ECU may have a problem.
PROBABLE CAUSES • Damaged wiring harness and connectors • 4WD-ECU malfunction
DIAGNOSIS PROCEDURE STEP 1. M.U.T.-III CAN bus diagnostics Use M.U.T.-III to diagnose the CAN bus lines. Q: Is the check result normal? YES : Go to Step 2. NO : Repair the CAN bus line (Refer to GROUP
54C − Troubleshooting/CAN Bus Diagnostics Table ). On completion, go to Step 2.
STEP 2. Voltage measurement at the 4WD-ECU connector (1) Disconnect the 4WD-ECU connector. (2) Turn the ignition switch to the ON position. (3) Measure the voltage between the 4WD-ECU wiring harness side connector terminals BATT, IG1 (Ignition switch "ON") and the body earth. OK: System voltage Q: Is the check result normal?
YES : Go to Step 3. NO : Repair the connector(s) or terminal(s) or
wiring harness. STEP 3. Resistance measurement at the 4WD-ECU connector (1) Disconnect the 4WD-ECU connector. (2) Measure the resistance between the 4WD-ECU wiring harness side connector terminals No. GND1 and the body earth. OK: Continuity exists (2 Ω or less) Q: Is the check result normal? YES : Go to Step 4. NO : Repair the connector(s) or terminal(s) or
wiring harness. STEP 4. Retest the system. Q: Does the malfunction occur again? YES : Replace 4WD-ECU (Refer to P.27C-51).
Then go to Step 5 . NO : The trouble can be an intermittent
malfunction (Refer to GROUP 00 − How to Use Troubleshooting/How to Cope with Intermittent Malfunctions ).
STEP 5. Retest the system. Q: Does the malfunction occur again? YES : Diagnose again from Step 1. NO : This diagnosis is complete.
ELECTRONICALLY CONTROLLED 4WD TROUBLESHOOTING
27C-43
Inspection Procedure 2: Shifting the 4WD Switch does not Change the Mode.
COMMENTS ON TROUBLE SYMPTOM • If the drive mode cannot be switched by pushing the 4WD switch, the 4WD switch, the wiring harness wires between the 4WD-ECU and the 4WD switch, the wiring harness wire in the earth circuit for the 4WD switch, the 4WD-ECU or the combination meter may have a problem.
PROBABLE CAUSES • • • •
Damaged wiring harness and connectors Malfunction of 4WD switch 4WD-ECU malfunction Combination meter malfunction
DIAGNOSIS PROCEDURE STEP 1. M.U.T.-III CAN bus diagnostics. Use M.U.T.-III to perform the CAN bus diagnosis.
Q: Is the check result normal? YES : Go to Step 5 NO : Replace the 4WD switch (Refer to
P.27C-52). Then go to Step 8. STEP 5. Wiring harness check (1) Check the wiring harness between the 4WD-ECU connector (terminal sw-1) and the 4WD switch connector. (2) Check the connector(s) or terminal(s) or wiring harness above for damage or other problem. Q: Is the check result normal? YES : Go to Step 6 NO : Repair the connector(s) or terminal(s) or
wiring harness.
Q: Is the check result normal? YES : Go to Step 3 NO : Repair the CAN bus lines (Refer to GROUP
STEP 6. Resistance measurement at the 4WD switch connector (1) Disconnect the 4WD switch connector. (2) Measure the resistance between the 4WD switch wiring harness side connector and the body earth. OK: Continuity exists (2 Ω or less)
STEP 2. Retest the system.
Q: Is the check result normal? YES : Go to Step 7 NO : Repair the connector(s) or terminal(s) or
54C − Troubleshooting ). After repairing the CAN bus line, go to Step 2.
Q: Does the malfunction occur again? YES : The trouble can be an intermittent
malfunction (Refer to GROUP 00 − How to Use Troubleshooting/How to Cope with Intermittent Malfunctions ). NO : Go to Step 3
STEP 3. M.U.T.-III actuator test. Combination meter item No.5: Meter illumination (Refer to GROUP 54A − Combination Meter ). Q: Is the check result normal? YES : Go to Step 4 NO : Replace the combination meter. (Refer to
GROUP 54A − Combination Meter ). Then go to Step 8.
STEP 4. Resistance measurement between the 4WD switch connector terminals (1) Remove the 4WD switch (Refer to P.27C-52). (2) Measure the resistance between the terminals (Refer to P.27C-52).
wiring harness. STEP 7. M.U.T.-III data list. Check the following data list. (Refer to P.27C-45). • Item 1: AWC (4WD) control mode Q: Is the check result normal? YES : Go to Step 9 NO : Go to Step 8
STEP 8. Retest the system. Q: Does the malfunction occur again? YES : Replace 4WD-ECU (Refer to P.27C-51).
Then go to Step 9 . NO : The trouble can be an intermittent malfunction (Refer to GROUP 00 − How to Use Troubleshooting/How to Cope with Intermittent Malfunctions ). STEP 9. Retest the system. Q: Does the malfunction occur again?
27C-44
ELECTRONICALLY CONTROLLED 4WD TROUBLESHOOTING
YES : Troubleshoot the combination meter multi
information display (Refer to GROUP 54A − Troubleshooting/CAN Bus Diagnostics Table ). Then diagnose again from Step 1. NO : This diagnosis is complete.
Inspection Procedure 3: The Tight Corner Braking Phenomenon* Appears with the 4WD switch in the 4WD ECO or 4WD AUTO Position. NOTE: . • *Tight corner braking phenomenon: When a 4WD vehicle makes sharp cornering in a paved road at low speed (ex. parallel parking), there is a difference in turning radius between front and rear wheels. If such a difference can no longer be compensated by tyre slippage, the vehicle behaves as if it is under braking. • The vehicle is tuned so that the tight corner braking phenomenon appears at a certain level with the drive mode in the LOCK position.
COMMENTS ON TROUBLE SYMPTOM If the tight corner braking phenomenon occurs only with the 4WD switch being on the 4WD ECO, 4WD AUTO position, the data received by 4WD-ECU from each ECU, the electronic control coupling, or 4WD-ECU may have a problem.
PROBABLE CAUSES • Malfunction of electronic control coupling • Malfunction of data transmitted from ABS or ASC system • Malfunction of data transmitted from the engine control system • Wheel speed sensor malfunction • Steering wheel sensor malfunction • 4WD-ECU malfunction • 4WD switch malfunction
DIAGNOSIS PROCEDURE STEP 1. Check for the tight corner braking phenomenon occurrence during driving on a flat road Check if the tight corner braking phenomenon occurs during driving on a flat road with the 4WD switch being on the 4WD ECO or 4WD LOCK position. Q: Does the tight corner braking phenomenon occur?
YES : Go to Step 2. NO : This diagnosis is complete.
STEP 2. Wiring harness check (1) Check the wiring harness between the 4WD-ECU connector (terminal SOL+, SOL-) and the electronic control coupling solenoid connector for damage or other problem. (2) Check the connector(s) or terminal(s) or wiring harness above for damage or other problem. Q: Is the check result normal? YES : Go to Step 3. NO : Repair the connector(s) or terminal(s) or
wiring harness. STEP 3. M.U.T.-III data list Check the data list for the items below (Refer to P.27C-45). • Item No.8: Steering angle sensor • Item No.11: Accelerator position • Item No.18: FL wheel speed sensor • Item No.19: FR wheel speed sensor • Item No.20: RL wheel speed sensor • Item No.21: RR wheel speed sensor • Item No.22: Yaw rate sensor • Item No.23: Lateral G sensor Q: Is the check result normal? YES : Go to Step 5. NO : Perform the troubleshooting of the ABS
system (Refer to GROUP 35B − Troubleshooting/Diagnosis Code Chart ), the ASC system (Refer to GROUP 35C − Troubleshooting/Diagnosis Code Chart ) or the engine control system (Refer to GROUP 13A − Troubleshooting/Inspection Chart for Diagnosis Code . Then go to Step 4.
ELECTRONICALLY CONTROLLED 4WD TROUBLESHOOTING
STEP 4. Check for the tight corner braking phenomenon occurrence during driving on a flat road Check if the tight corner braking phenomenon occurs during driving on a flat road with the 4WD switch being on the 4WD ECO. Q: Does the tight corner braking phenomenon occur? YES (Coil current in the electronic control coupling solenoid is 0 A) : Measure the coil current when
the tight corner braking occurs. If the coil current measures 0 A, replace the electronic control coupling (Refer to P.27C-53). Then go to Step 5. YES (Coil current in the electronic control coupling solenoid is other than 0 A) : Measure the coil
current when the tight corner braking occurs. If the coil current is other than 0 A, go to Step 5. NO : This diagnosis is complete. Then go to Step 6.
27C-45
STEP 5. Retest the system. Q: Does the malfunction occur again? YES : Replace 4WD-ECU (Refer to P.27C-51).
Then go to Step 6 . NO : The trouble can be an intermittent
malfunction (Refer to GROUP 00 − How to Use Troubleshooting/How to Cope with Intermittent Malfunctions ).
STEP 6. Retest the system. Q: Does the malfunction occur again? YES : Replace the electronic control coupling
(Refer to P.27C-53). Then go to Step 7. NO : This diagnosis is complete.
STEP 7. Retest the system. Q: Does the malfunction occur again? YES : Diagnose again from Step 1. NO : This diagnosis is complete.
Inspection Procedure 4: No Diagnosis Code is set even when the 4WD-E/LOCK Indicator Lamps flash.
COMMENTS ON TROUBLE SYMPTOM • In case that the 4WD-E/LOCK indicator flashes but no diagnosis code is set, the 4WD-ECU power supply circuit system may have a problem. • If the 4WD-ECU power supply voltage is approximately 6 V or less when the system is in operation (always), the CPU of 4WD-ECU automatically shuts down. At this time, if the 4WD control is in operation, the system will switch the drive mode into 2WD gradually to protect the drive train. 4WD-ECU cannot set the diagnosis code because the CPU shuts down. In addition, the combination meter determines the 4WD-ECU time-out, and flashes both 4WD-E/LOCK indicators.
PROBABLE CAUSES • Damaged wiring harness and connectors • 4WD-ECU malfunction
DIAGNOSIS PROCEDURE
position to the "ON" position. (2) Check that the 4WD-E/LOCK indicator lamps flash simultaneously when the drive mode selector is switched to 4WD ECO, or 4WD LOCK position. Q: Does the 4WD-E/LOCK Indicator Lamps flash simultaneously? YES : • When the drive system fluid temperature
warning display illuminates in the combination meter, cool down the electronic control coupling. • When the drive system fluid temperature warning display does not illuminate in the combination meter, referring to "Inspection Procedure 1: M.U.T.-III cannot Communicate with the Electronically Controller 4WD System ", perform the check P.27C-42. NO : Referring to the Inspection Chart for Trouble Symptoms, perform the check P.27C-41.
STEP 1. Check if 4WD/LOCK Indicator Lamps DATA LIST REFERENCE TABLE flash simultaneously M1274001000161 (1) Turn the ignition switch from the "LOCK" (OFF) M.U.T.-III can read the following items among various control data (input data from each ECU and switch) used by the electronic control 4WD system.
27C-46
ELECTRONICALLY CONTROLLED 4WD TROUBLESHOOTING
THE SYSTEM IS NORMAL. Item No.
Display on M.U.T.-III
Check conditions
Normal condition
1
AWC control mode (4WD control mode)
4WD is selected (displayed on multi information display).
4WD ECO 4WD AUTO 4WD LOCK
5
Centre coupling current
Perform a test run of the vehicle.
0−3A
6
AWC protection control (4WD protection control)
Correct
OFF
Malfunction
ON
AWC system fail (4WD system fail)
Correct
OFF
Malfunction
ON
7 8
Steering angle sensor
Steering wheel steered
Within a predetermined steering angle
9
Steering angle speed
Steering wheel: Without steering wheel operation
0 deg/s
Steering wheel: With steering wheel operation
Changes depending on the turning speed.
Normal
Correct
Faulty
Malfunction
Neutral point not learned
Neutral not learned
Neutral point not learned or failed
Neutral not learned and Malfunction
Release the accelerator pedal
Approximately 0%
Depress the accelerator pedal
0 − 100%
Accelerator pedal fully opened
Approximately 100%
10
11
Steering angle sensor (status)
Accelerator position
12
Engine speed
Idling and test run
0 − Maximum engine speed
13
A/T gear position
Gear range: P
P
Gear range: R
R
Gear range: N
N
Gear range: 1st
1st
Gear range: 2nd
2nd
Gear range: 3rd
3rd
Gear range: 4th
4th
Gear range: 5th
5th
Gear range: 6th
6th
Gear range: 7th
7th
ELECTRONICALLY CONTROLLED 4WD
27C-47
TROUBLESHOOTING
Item No.
Display on M.U.T.-III
Check conditions
Normal condition
14
FL wheel speed (raw value)
− (reference because of r/min)
−
15
FR wheel speed (raw value)
16
RL wheel speed (raw value)
17
RR wheel speed (raw value)
18
FL wheel speed sensor
Perform a test run of the vehicle.
19
FR wheel speed sensor
20
RL wheel speed sensor
Nearly the same as the speedometer display
21
RR wheel speed sensor
22
Yaw rate sensor
When the vehicle is stationary
Approximately 0 deg/s
Perform a test run of the vehicle.
−90 − 90 deg/s
Vehicle is stopped (horizontal state).
Approximately 0 m/s2
Perform a test run of the vehicle.
−10.24 − 10.08 m/s2
Vehicle is stopped (horizontal state).
Approximately 0 m/s2
Perform a test run of the vehicle.
−10.24 − 10.08 m/s2
Brake pedal: Depressed
ON
Brake pedal: Released
OFF
Parking brake lever: Pulled
ON
Parking brake lever: Released
OFF
Ignition switch: ACC
ACC
Ignition switch: ON
ON
Ignition switch: START
START
23
24
28 29 30
Lateral G sensor
Longitudinal G sensor
Brake switch (CAN input) Parking brake SW (CAN input) Ignition SW (CAN input)
31
Battery voltage (CAN input)
Ignition switch: ON
6 − 17 V
32
IOD fuse (CAN input)
Fuse inserted
ON
Fuse removed
OFF
33
Odometer (CAN input)
Ignition switch: ON
0 − 1,677,721.4 km
34
Ambient temperature (CAN input)
Ignition switch: ON
-30 °C − 85 °C
35
Ignition off time (CAN input)
After ignition switch: OFF for one minute or more, ignition switch: ON
0 − 254 min
38
IG1
Ignition switch: ON
ON
Ignition switch: OFF
OFF
39
ECU power supply voltage
Ignition switch: ON
10 − 18.75 V
40
Output load voltage
Ignition switch: ON
10 − 18.75 V
41
Mode SW
4WD SW : OFF
OFF
4WD SW : ON
ON
44
SAS (adjusted value)
Ignition switch: ON
−15 − 15 deg
45
Chassis Number writing counter
Ignition switch: ON
Writing count
27C-48
ELECTRONICALLY CONTROLLED 4WD TROUBLESHOOTING
Item No.
Display on M.U.T.-III
Check conditions
46
Chassis Number (original) lock
Ignition switch: ON
Normal condition Locked
Lock
Unlocked
Unlock
47
Mileage counter
Ignition switch: ON
Counter value
48
Coding counter
Ignition switch: ON
0 − 255 times
SYSTEM SHUT-DOWN
SPECIAL FUNCTION
M.U.T.-III display data does not agree with the actual RESET data when 4WD-ECU deactivates the 4WD control function by the fail-safe function. Item Display on M.U.T.-III Initialization contents No.
M1274013500011
1
SAS adjusted value
Resets the steering wheel sensor neutral position learned value.
3
Centre coupling estimated temp.
Reset the estimated temperature of centre coupling.
TEST Item Display on M.U.T.-III No. 4
Control OFF
6
Centre coupling operation check
Test content
Normal conditions
The electronic control coupling (centre) operation stops
Refer to the electronic control coupling (centre) operation check.
Drive the electronic control Maximum 60 seconds coupling (centre) with control current of 3 A. • A system malfunction is detected. 1. The test can be performed only when all the • The forced activation time has elapsed. following conditions are satisfied. • M.U.T.-III is removed. • Every wheel speed sensor input is 20 km/h or • M.U.T.-III clear key is operated. less. The sensor neutral position learned value initializa• No system malfunction is detected. tion can be performed only when the vehicle is • The steering angle of steering wheel is within stopped. ±30° from the neutral position. 2. With the test, when any of the conditions below is CHECK AT ECU TERMINALS met, the forced activation will be cancelled. M1274001300139 • Any of the wheel speed sensors detects an input of 20 km/h or more (excluding item No. 4 "Control OFF").
ACB05609
ELECTRONICALLY CONTROLLED 4WD
27C-49
ON-VEHICLE SERVICE
Termin Termi al No. nal code
Inspection Item
Check condition
1
Electronic control coupling solenoid (centre)
Using M.U.T.-III, perform "Test Item No. 4: 1 V or less Control OFF" of "SPECIAL FUNCTION"
SOL+
Normal condition
Using M.U.T.-III, perform "Test Item No. 6: Approximately 8 V Centre coupling operation check" of "SPECIAL FUNCTION"
3
BATT
Power supply
Always
System voltage
4
IG1
Ignition switch
Ignition switch: ON
System voltage
Ignition switch: OFF
1 V or less
5
CANH CAN-H
−
−
9
SOL-
Electronic control coupling solenoid (centre)
Always
1 V or less
10
GND1
Earth
Always
1 V or less
13
CANL
CAN-L
−
−
16
SW-1
4WD switch signal
Ignition switch: ON
4WD switch: ON
System voltage
4WD switch: OFF
1 V or less
ON-VEHICLE SERVICE CHECK OF ELECTRONIC CONTROL COUPLING M1274005700225
SIMPLE OPERATION CHECK OF ELECTRONIC CONTROL COUPLING CAUTION The following checks in the 4WD mode must be completed within one minute in total to protect the 4WD drive system components and parking brake. 1. Raise the vehicle.
Marking
ACB05570AB
2. Mark the front and rear tyres for easy identification of tyre rotation.
3. Adjust the parking brake lever to the normal conditions. (Refer to GROUP 36 − On-vehicle Service, Parking Brake Lever Stroke Check and Adjustment ). 4. Pull the parking brake lever by two notches. Then start the engine. NOTE: Activating the parking brake slightly prevents the drive force transferring to the rear wheels by a friction in the electronic control coupling. If the following 2WD mode is checked without the parking brake activation, the drive force is transferred to the rear wheels by a friction in the electronic control coupling. 5. Execute the special test (item No. 4: control off) (Refer to P.27C-48) to switch the drive mode into 2WD forcibly. 6. Move the shift lever into the selector lever into D position. 7. Depress the accelerator pedal gradually, and maintain the vehicle speed at approximately 10 km/h. (Make sure that the rear wheels do not rotate). 8. Stop the engine. 9. Start the engine again, and move the shift lever into the selector lever into D position.
27C-50
ELECTRONICALLY CONTROLLED 4WD ON-VEHICLE SERVICE
10.Depress the accelerator pedal gradually, and maintain the vehicle speed at approximately 10 km/h. 11.Switch the 4WD switch to "4WD AUTO" position, and check that the rear wheels are rotating. After the above checks are completed, if the rear wheel rotation satisfies the above conditions, it is judged that the electronic control coupling operates correctly. If the rear wheel rotation does not satisfy the above conditions, replace the electronic control coupling. (Refer to P.27C-53.)
RESISTANCE MEASUREMENT BETWEEN ELECTRONIC CONTROL COUPLING SOLENOID CONNECTOR TERMINALS Electronic control coupling
1 2
D-113-1
AC707679 AC
Disconnect the electronic control coupling solenoid connector, and measure the resistance value between the connector terminals on the unit side. If the measured resistance value is out of the standard value range, replace the electronic control coupling. (Refer to P.27C-53.) Standard value: 2.2 − 4.0 Ω
ELECTRONICALLY CONTROLLED 4WD
27C-51
4WD-ECU
4WD-ECU REMOVAL AND INSTALLATION M1274001600141
Pre-removal and post-installation operation Removal and installation of the bottom cover assembly and glove box (Refer to GROUP 52A − Instrument Panel Assembly .)
11 ± 4 N·m
1
2 ACB04915 AB
1. 2.
Removal steps 4WD-ECU 4WD-ECU bracket
ELECTRONICALLY CONTROLLED 4WD
27C-52
4WD SWITCH
4WD SWITCH REMOVAL AND INSTALLATION M1274009800019
1
4 3 2.5 ± 0.5 N·m
2 ACB04916 AB
1.
2. 3. 4.
Removal steps Front floor console panel (Refer to GROUP 52A Front Floor Console Assembly ) Connector connection Bezel 4WD switch
4WD SWITCH CHECK M1274009900016
ACB04917AB
Item
When the 4WD When the 4WD switch is switch is released (Not pressed being operated)
Continuity between terminal No. 2 and No. 6
No continuity
Continuity between terminal No. 3 and No. 10
Continuity exists Continuity exists
Continuity exists (2 Ω or less)
ELECTRONICALLY CONTROLLED 4WD ELECTRONIC CONTROL COUPLING
27C-53
ELECTRONIC CONTROL COUPLING REMOVAL AND INSTALLATION M1274002100150
Differential side
3 4
Electronic control coupling side
6
1 7 5 54 ± 5 N·m
Semi-drying sealant: ThreeBond 1215, 1216, 1217 or equivalent
4
48 ± 6 N·m
2
7.9 ± 0.9 N·m ACB04914 AB
1.
>>A>A>A>A>A>A>C>B>A>A>B>C>A>A>C>B>A>A>B>C>C>C>C>B>C>B>A>A>B>C>A The power window with the safety mechanism (anti-trap function) has been adopted. To enhance safety, if any obstacle such as a hand or a head is detected to be pinched during a window glass clos-
ing operation, driver’s side door window glass is opened by approximately 150 mm.
ONE-TOUCH OPENING/ CLOSING MECHANISM >A>A>A>A>A>A>A>A>A>A>B>A>A>B>A>A>A>A>A>A>A>A>A>A>A>A>A>A>A>C>B>A>A>B>C>A>B>A>B>A>A>A>A>A>A>A>A
Seat belt pre-tensioner
Squib connector Inflator
ACB03702 ACB05537 ACC00049 AB
2. Check the connector for damage, the terminal for deformation, and the harness for binding. 3. Check the inflator case for dent, crack, or deformation. 4. Check that the air bag module is installed correctly.
ACC00046 ACC00081AB
1. Check the seat belt pre-tensioner crack or deformation. 2. Check the connector for damage and the terminal for deformation.
FRONT IMPACT SENSOR Headlamp support panel upper
CLOCK SPRING Front impact sensor
Case Protective tubes
ACB05523AB
1. Check the front impact sensor for dent, crack or deformation. 2. Check the connector for damage, the terminal for deformation, and the harness for binding. AC904942 AC
1. Check the connector and protector tube for damage, and the terminal for deformation. 2. Check the case for damage.
FRONT SEAT ASSEMBLY (WITH BUILT-IN SIDE AIR BAG MODULE) Side-airbag module deployment section
STEERING WHEEL, STEERING COLUMN ASSEMBLY 1. Check that the driver's air bag module is installed to the steering wheel correctly. 2. Check the steering wheel for noise, binding, operational failure, and play.
AC507151AB
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-122
INDIVIDUAL COMPONENT SERVICE
1. Check that the side-airbag module deployment part of the seat is normal. 2. Check the connector for damage, the terminal for deformation, and the harness for binding.
CURTAIN AIR BAG MODULE Inflator
SIDE IMPACT SENSOR Side impact sensor Curtain air bag module deployment section AC506894AB
Front seat belt ACB05524AB
1. Check the centre pillar and quarter trim lower for deformation. 2. Check the side impact sensor for dent, crack, deformation, or rust. 3. Check the connector for damage, the terminal for deformation, and the harness for binding.
1. Check that the curtain air bag deployment part of the headlining is normal. 2. Check the inflator surface for cracks, dents or deformations. 3. Check the connector for damage, the terminal for deformation, and the harness for binding.
PASSENGER’S AIR BAG CUT OFF SWITCH 1. Check the passenger’s air bag cut off switch for dents or deformation. 2. Check the installation of the passenger’s air bag cut off switch.
HARNESS CONNECTOR Check the wiring harness for binding, the connector for damage, and the terminal for deformation (Refer to P.52B-7).
INDIVIDUAL COMPONENT SERVICE M1524002901014
CAUTION 1. If the influence of heat is suspected during painting work, remove the following parts. • 93°C or more: SRS-ECU, air bag module, clock spring, front impact sensor, side impact sensor • 90°C or more: Seat belt with pre-tensioner 2. Store the removed SRS air bag and components of seat belt with pre-tensioner in a clean, dry place. Remove or install the SRS air bag and seat belt with pre-tensioner according to the procedures indicated in the removal and installation of each part.
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) WARNING/CAUTION LABELS
52B-123
WARNING/CAUTION LABELS M1524003002192
The labels indicating the precautions for handling and maintenance of SRS air bags and seat belt with pre-tensioner are attached to the locations shown in the figure. If the label is damaged or is dirty, replace with the new label.
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-124
WARNING/CAUTION LABELS
Driver's air bag module
Passenger's (front) air bag module
ACB05535
ACB03681
Sunvisor
Side-airbag module (right and left)
SRS-ECU
ACB05614
Seat belt pre-tensioner (right and left)
Curtain air bag module (right and left)
ACC00035
AC506241 ACB05525
Passenger's air bag cut off switch
Knee air bag module
ACB05536 ACB05526
ACC00073AB
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) FRONT IMPACT SENSORS
52B-125
FRONT IMPACT SENSORS REMOVAL AND INSTALLATION M1524001501938
CAUTION • Disconnect the negative (−) battery terminal and wait for 60 seconds or more before starting work. Insulate the disconnected (−) terminal by wrapping the tape (Refer to the item 5 of Service Precautions P.52B-7). • Never attempt to disassemble or repair the front impact sensor. If faulty, replace it with new one(s). • Handle the front impact sensor with sufficient caution, and do not drop the sensor or allow contact with water, oil, or others. If denting, cracking, or deformation is discovered, replace it with new one(s). • After deployment of an air bag, replace the front impact sensor with a new one. Pre-removal operation • Turn the ignition switch to the LOCK (OFF) position. • Disconnect the negative (−) battery terminal.
1
1
10 ± 2 N·m
10 ± 2 N·m
ACB05457AB
1.
Removal steps Front impact sensor
>>A>B>C>C>A>B>A>B>C>C>A>B>A>B>C>C>A>B>A>B>CD>B>C>D>B>A>A>B>A>B>C>A>B>C>A>A>A>A>A>A
1. 2.
Removal steps Rear fog lamp assembly Rear fog lamp socket
3. 4.
Removal steps (Continued) Rear fog lamp bulb Rear fog lamp unit
CHASSIS ELECTRICAL
54A-158
SIDE TURN-SIGNAL LAMP
REMOVAL SERVICE POINT REAR FOG LAMP ASSEMBLY REMOVAL Push the rear fog lamp assembly to the right to bend the hook, and then remove by disengaging the claw from the rear bumper.
SIDE TURN-SIGNAL LAMP REMOVAL AND INSTALLATION M1541800200509
For the side turn-signal lamp removal and installation procedures, refer to GROUP 51 − Door Mirror .
Section A – A
1
1 Front of vehicle A Claw Hook
A Fender panel
AC506857
ACB05650 AB
,
1.
Removal Side turn-signal lamp assembly
REMOVAL SERVICE POINT SIDE TURN-SIGNAL LAMP ASSEMBLY REMOVAL Push the side turn-signal lamp assembly toward the vehicle rear to bend the hook, and then remove by disengaging the claw from the fender panel.
CHASSIS ELECTRICAL
54A-159
INTERIOR LAMP
INTERIOR LAMP SPECIAL TOOLS M1541301600345
Tool a
MB992744
b
MB992745
c
DO NOT USE MB992746
d
MB992747
e
MB992748 ACB05421AB
Number
Name
Use
a. MB992744 b. MB992745 c. MB992746 d. MB992747 e. MB992748
Diagnosis code, service data and a. Vehicle communicatio actuator test check. n interface-Lite (V.C.I.-Lite) b. V.C.I.-Lite main harness A (for vehicles with CAN communicatio n) c. V.C.I.-Lite main harness B (for vehicles without CAN communicatio n) d. V.C.I.-Lite USB cable short e. V.C.I.-Lite USB cable long
CHASSIS ELECTRICAL
54A-160
INTERIOR LAMP
Tool a
MB991824
b
Number
Name
Use
MB991955 a. MB991824 b. MB991827 c. MB991910 d. MB991911 e. MB991825 f. MB991826
M.U.T.-III sub-assembly a. Vehicle Communicati on Interface (V.C.I.) b. M.U.T.-III USB cable c. M.U.T.-III main harness A (Vehicles with CAN communicatio n system) d. M.U.T.-III main harness B (Vehicles without CAN communicatio n system) e. M.U.T.-III measure adapter f. M.U.T.-III trigger harness
CAUTION For vehicles with CAN communication, use M.U.T.-III main harness A to send simulated vehicle speed. If you connect M.U.T.-III main harness B instead, the CAN communication does not function correctly. Diagnosis code, service data and actuator test check.
MB991223 a. MB991219 b. MB991220 c. MB991221 d. MB991222
Harness set a. Check harness b. LED harness c. LED harness adapter d. Probe
Continuity check and voltage measurement at harness wire or connector a. For checking connector pin contact pressure b. For checking power supply circuit c. For checking power supply circuit d. For connecting a locally sourced tester
MB991827
c
MB991910
d
DO NOT USE MB991911
e
MB991825
f
MB991826 MB991955
a
b
c
d
DO NOT USE MB991223BA
CHASSIS ELECTRICAL
54A-161
INTERIOR LAMP
Tool
Number
Name
Use
MB992006
Extra fine probe
Continuity check and voltage measurement at harness wire or connector
MB992006
TROUBLESHOOTING
TROUBLE SYMPTOM CHART M1541300200515
STANDARD FLOW OF DIAGNOSTIC TROUBLESHOOTING M1541301500166
Refer to GROUP 00 − Contents of troubleshooting . Trouble symptom
Inspection Procedure No.
Reference page
The front room lamp does not illuminate normally.
1
P.54A-161
The rear room lamp does not illuminate normally.
2
P.54A-163
The luggage compartment lamp does not illuminate normally.
3
P.54A-164
The interior lamp automatic shutoff function does not work normally.
4
P.54A-165
SYMPTOM PROCEDURES
Inspection Procedure 1: The front room lamp does not illuminate normally.
CAUTION • Before replacing the ECU, ensure that the power supply circuit, the earth circuit and the communication circuit are normal. • When the ETACS-ECU of vehicles without KOS is replaced, the encrypted code of the ignition key needs to be registered to the ETACS-ECU. (If the encrypted code is not registered, the engine cannot be started. Register the encrypted code as described in Immobilizer System − How to Register Key ID P.54A-33.)
OPERATION The ETACS-ECU illuminates and extinguishes the front room lamp in accordance with the input signals below. • Ignition switch (IG1) • Key reminder switch • Door switches • Front door lock actuator (driver’s side)
COMMENTS ON TROUBLE SYMPTOM If this does not work normally, the above switch input circuit(s), front room lamp, or ETACS-ECU may have a problem.
PROBABLE CAUSES • Malfunction of the key reminder switch • Malfunction of door switch • Malfunction of the front door lock actuator (driver’s side) • Malfunction of front room lamp • Malfunction of the ETACS-ECU • Damaged harness wires and connectors
DIAGNOSIS PROCEDURE STEP 1. Rear room lamp operation check Check that the rear room lamp illuminates and extinguishes normally. Q: Is the check result normal? YES : Go to Step 4. NO : Go to Step 2.
CHASSIS ELECTRICAL
54A-162
INTERIOR LAMP
STEP 2. M.U.T.-III diagnosis code Check if diagnosis code is set to the ETACS-ECU. Q: Is the diagnosis code set? YES : Troubleshoot the ETACS-ECU. Refer to
P.54A-281. NO : Go to Step 3. STEP 3. M.U.T.-III data list Use the ETACS-ECU service data to check the signals related to the operation of front room lamp. • Turn the ignition switch to the LOCK (OFF) position. • Remove the ignition key from the ignition key cylinder. • Open each door. Item No.
Item name
Normal condition
Item 228
Dr door unlock
ON
Item 254
IG voltage
1 V or less
Item 256
Dr door ajar switch
Open
Item 257
As door ajar switch
Open
Item 258
RR door ajar switch
Open
Item 259
RL door ajar switch
Open
Item 264
Handle lock switch
Key in → Key out
OK: Normal conditions are displayed for all the items. Q: Is the check result normal?
Normal conditions are displayed for all the items. :
Replace the ETACS-ECU. Normal condition is not displayed for item No. 228. : Troubleshoot the ETACS-ECU. Refer to
Inspection Procedure 4 "The front door lock actuator (driver’s side) signal is not received" P.54A-315. Normal condition is not displayed for item No. 254. : Troubleshoot the ETACS-ECU. Refer to
Inspection Procedure 2 "The ignition switch (IG1) signal is not received" P.54A-313. Normal condition is not displayed for item No. 256. : Troubleshoot the ETACS-ECU. Refer to
Inspection Procedure 5 "The front door switch (driver’s side) signal is not received" P.54A-316. Normal condition is not displayed for item No. 257. : Troubleshoot the ETACS-ECU. Refer to
Inspection Procedure 6 "The front door switch (passenger’s side) signal is not received" P.54A-317. Normal condition is not displayed for item No. 258. : Troubleshoot the ETACS-ECU. Refer to
Inspection Procedure 7 "The rear door switch (RH) signal is not received" P.54A-318. Normal condition is not displayed for item No. 259. : Troubleshoot the ETACS-ECU. Refer to
Inspection Procedure 8 "The rear door switch (LH) signal is not received" P.54A-318. Normal condition is not displayed for item No. 264. : Troubleshoot the ETACS-ECU. Refer to
Inspection Procedure 3 "Key reminder switch signal is not received" P.54A-314. STEP 4. Front room lamp bulb check Check that the front room lamp bulb is normal. Q: Is the check result normal? YES : Go to Step 5. NO : Replace the front room lamp bulb.
STEP 5. Check of open circuit in (LP+1, LP+2, LP+3&LP+4) line between the front room lamp connector and ETACS-ECU connector. Q: Is the check result normal? YES : Go to Step 6. NO : Repair the connector(s) or wiring harness.
STEP 6. Check of open circuit in (RLP-1, RLP-2&RLP-3) line between the front room lamp connector and ETACS-ECU connector. Q: Is the check result normal?
CHASSIS ELECTRICAL INTERIOR LAMP YES : Go to Step 7. NO : Repair the connector(s) or wiring harness.
STEP 7. Check of open circuit in earth line between the front room lamp connector and body earth. Q: Is the check result normal? YES : Replace the front room lamp, and then go to
Step 8. NO : Repair the connector(s) or wiring harness.
54A-163
STEP 8. Retest the system Check that the front room lamp illuminates/extinguishes normally. Q: Is the check result normal? YES : The trouble can be an intermittent
malfunction (Refer to GROUP 00 − How to use Troubleshooting/inspection Service Points − How to Cope with Intermittent Malfunction ). NO : Replace the ETACS-ECU.
Inspection Procedure 2: The rear room lamp does not illuminate normally.
CAUTION • Before replacing the ECU, ensure that the power supply circuit, the earth circuit and the communication circuit are normal. • When the ETACS-ECU of vehicles without KOS is replaced, the encrypted code of the ignition key needs to be registered to the ETACS-ECU. (If the encrypted code is not registered, the engine cannot be started. Register the encrypted code as described in Immobilizer System − How to Register Key ID P.54A-33.)
OPERATION The ETACS-ECU illuminates and extinguishes the rear room lamp in accordance with the input signals below. • Ignition switch (IG1) • Key reminder switch • Door switches • Front door lock actuator (driver’s side)
COMMENTS ON TROUBLE SYMPTOM
DIAGNOSIS PROCEDURE STEP 1. Front room lamp operation check Check that the front room lamp illuminates and extinguishes normally. Q: Is the check result normal? YES : Go to Step 2. NO : Refer to Inspection Procedure 1 "The front
room lamp does not illuminate normally." P.54A-161. STEP 2. Rear room lamp bulb check Check that the rear room lamp bulb is normal. Q: Is the check result normal? YES : Go to Step 3. NO : Replace the rear room lamp bulb.
STEP 3. Check of open circuit in (LP+1, LP+2, LP+3&LP+4) line between the rear room lamp connector and ETACS-ECU connector.
If this does not work normally, the above switch input circuit(s), rear room lamp, or ETACS-ECU may have a problem.
Q: Is the check result normal? YES : Go to Step 4. NO : Repair the connector(s) or wiring harness.
PROBABLE CAUSES
STEP 4. Check of open circuit in (RLP-1, RLP-2&RLP-3) line between the rear room lamp connector and ETACS-ECU connector.
• Malfunction of the key reminder switch • Malfunction of door switch • Malfunction of the front door lock actuator (driver’s side) • Malfunction of rear room lamp • Malfunction of the ETACS-ECU • Damaged harness wires and connectors
Q: Is the check result normal? YES : Go to Step 5. NO : Repair the connector(s) or wiring harness.
STEP 5. Check of open circuit in earth line between the rear room lamp connector and body earth. Q: Is the check result normal?
54A-164
CHASSIS ELECTRICAL INTERIOR LAMP
YES : Replace the rear room lamp, and then go to
Step 6. NO : Repair the connector(s) or wiring harness.
STEP 6. Retest the system Check that the rear room lamp illuminates/extinguishes normally.
YES : The trouble can be an intermittent
malfunction (Refer to GROUP 00 − How to use Troubleshooting/inspection Service Points − How to Cope with Intermittent Malfunction ). NO : Replace the ETACS-ECU.
Q: Is the check result normal?
Inspection Procedure 3: The luggage compartment lamp does not illuminate normally.
CAUTION • Before replacing the ECU, ensure that the power supply circuit, the earth circuit and the communication circuit are normal. • When the ETACS-ECU of vehicles without KOS is replaced, the encrypted code of the ignition key needs to be registered to the ETACS-ECU. (If the encrypted code is not registered, the engine cannot be started. Register the encrypted code as described in Immobilizer System − How to Register Key ID P.54A-33.)
OPERATION The ETACS-ECU illuminates and extinguishes the luggage compartment lamp in accordance with the input signals from tailgate lock actuator or tailgate latch .
COMMENTS ON TROUBLE SYMPTOM If this does not work normally, the tailgate lock actuator or tailgate latch input circuit, luggage compartment lamp, or ETACS-ECU may have a problem.
PROBABLE CAUSES • Malfunction of tailgate lock actuator or tailgate latch • Malfunction of luggage compartment lamp • Malfunction of the ETACS-ECU • Damaged harness wires and connectors
YES : Troubleshoot the ETACS-ECU. Refer to
P.54A-281. NO : Go to Step 2.
STEP 2. M.U.T.-III data list Use the ETACS-ECU service data to check the signals related to the operation of luggage compartment lamp. • Open the tailgate. Item No.
Item name
Normal condition
Item 260
Gate ajar switch
Open
OK: Normal condition is displayed. Q: Is the check result normal? YES : Go to Step 3. NO : Troubleshoot the ETACS-ECU. Refer to
Inspection Procedure 9 "The tailgate lock actuator or tailgate latch signal is not received" P.54A-319. STEP 3. Luggage compartment lamp bulb check Check that the luggage compartment lamp bulb is normal. Q: Is the check result normal? YES : Go to Step 4. NO : Replace the luggage compartment lamp
bulb.
DIAGNOSIS PROCEDURE
STEP 4. Check of open circuit in (LP+1, LP+2, LP+3&LP+4) line between the luggage compartment lamp connector and ETACS-ECU connector.
STEP 1. M.U.T.-III diagnosis code Check if diagnosis code is set to the ETACS-ECU.
Q: Is the check result normal? YES : Go to Step 5. NO : Repair the connector(s) or wiring harness.
Q: Is the diagnosis code set?
CHASSIS ELECTRICAL INTERIOR LAMP
STEP 5. Check of open circuit in GLP- line between the luggage compartment lamp connector and ETACS-ECU connector. Q: Is the check result normal? YES : Go to Step 6. NO : Repair the connector(s) or wiring harness.
STEP 6. Check of open circuit in earth line between the luggage compartment lamp connector and body earth. Q: Is the check result normal?
54A-165
YES : Replace the luggage compartment lamp,
and then go to Step 7. NO : Repair the connector(s) or wiring harness.
STEP 7. Retest the system Check that the luggage compartment lamp illuminates and extinguishes normally. Q: Is the check result normal? YES : The trouble can be an intermittent
malfunction (Refer to GROUP 00 − How to use Troubleshooting/inspection Service Points − How to Cope with Intermittent Malfunction ). NO : Replace the ETACS-ECU.
Inspection Procedure 4: The interior lamp automatic shutoff function does not work normally.
CAUTION • Before replacing the ECU, ensure that the power supply circuit, the earth circuit and the communication circuit are normal. • When the ETACS-ECU of vehicles without KOS is replaced, the encrypted code of the ignition key needs to be registered to the ETACS-ECU. (If the encrypted code is not registered, the engine cannot be started. Register the encrypted code as described in Immobilizer System − How to Register Key ID P.54A-33.)
COMMENTS ON TROUBLE SYMPTOM The ETACS-ECU operates the interior lamp automatic shutoff function in accordance with the input signals below. • Ignition switch (ACC) • Ignition switch (IG1) • Door switches If this function does not work normally, these input signal circuit(s) or the ETACS-ECU may have a problem. Also, "Interior lamp auto cut timer" may be set to "Disable" through customisation.
PROBABLE CAUSES • Malfunction of door switch
• Malfunction of the room lamp • Malfunction of the ETACS-ECU • Damaged harness wires and connectors
DIAGNOSIS PROCEDURE STEP 1. Customise function check Use the ETACS-ECU customise function to check to see which of the followings other than "Disable" the "Interior lamp auto cut timer" is set. • 3 minutes • 30 minutes • 60 minutes Q: Is the check result normal? YES : Go to Step 2. NO : Use the ETACS-ECU customise function to
set the "Interior lamp auto cut timer" to other than "Disable" (Refer to P.54A-166). STEP 2. M.U.T.-III diagnosis code Check if diagnosis code is set to the ETACS-ECU. Q: Is the diagnosis code set? YES : Troubleshoot the ETACS-ECU. Refer to
P.54A-281. NO : Go to Step 3.
CHASSIS ELECTRICAL
54A-166
INTERIOR LAMP
STEP 3. M.U.T.-III data list Use the ETACS-ECU service data to check the signals related to the interior lamp automatic shutoff function. • Turn the ignition switch to the LOCK (OFF) position. • Open each door.
Normal conditions are displayed for all the items. :
Go to Step 4. Normal condition is not displayed for item No. 254. : Troubleshoot the ETACS-ECU. Refer to
Inspection Procedure 2 "The ignition switch (IG1) signal is not received" P.54A-313. Normal condition is not displayed for item No. 288. : Troubleshoot the ETACS-ECU. Refer to
Item No.
Item name
Normal condition
Inspection Procedure 1 "The ignition switch (ACC) signal is not received" P.54A-312.
Item 254
IG voltage
1 V or less
Normal condition is not displayed for item No. 256. : Troubleshoot the ETACS-ECU. Refer to
Item 288
ACC switch
OFF
Item 256
Dr door ajar switch
Open
Item 257
As door ajar switch
Open
Item 258
RR door ajar switch
Open
Item 259
RL door ajar switch
Open
OK: Normal conditions are displayed for all the items. Q: Is the check result normal?
Inspection Procedure 5 "The front door switch (driver’s side) signal is not received" P.54A-316. Normal condition is not displayed for item No. 257. : Troubleshoot the ETACS-ECU. Refer to
Inspection Procedure 6 "The front door switch (passenger’s side) signal is not received" P.54A-317. Normal condition is not displayed for item No. 258. : Troubleshoot the ETACS-ECU. Refer to
Inspection Procedure 7 "The rear door switch (RH) signal is not received" P.54A-318. Normal condition is not displayed for item No. 259. : Troubleshoot the ETACS-ECU. Refer to
Inspection Procedure 8 "The rear door switch (LH) signal is not received" P.54A-318. STEP 4. Retest the system Check that the interior lamp automatic shutoff function works normally. Q: Is the check result normal? YES : The trouble can be an intermittent
malfunction (Refer to GROUP 00 − How to use Troubleshooting/inspection Service Points − How to Cope with Intermittent Malfunction ). NO : Replace the ETACS-ECU.
ON-VEHICLE SERVICE CUSTOMISE FUNCTION M1541301200585
By operating the M.U.T.-III ETACS system, the following functions can be customised. The programmed information is held even when the battery is disconnected.
CHASSIS ELECTRICAL
54A-167
INTERIOR LAMP
Adjustment item (M.U.T.-III display)
Adjustment item
Room lamp Adjustment of delay timer with interior lamp delay door shutdown time
Interior lamp auto cut timer
Adjustment of interior lamp automatic shutdown function operation time
Adjusting content (M.U.T.-III display)
Adjusting content
0 sec
0 second (no delay shutdown time)
7.5 sec
7.5 seconds
15 sec
15 seconds (initial condition)
30 sec
30 seconds
60 sec
60 seconds
120 sec
120 seconds
180 sec
180 seconds
Disable
No function
3 min
3 minutes
30 min
30 minutes (initial condition)
60 min
60 minutes
INTERIOR LAMP REMOVAL AND INSTALLATION M1541301000332
FRONT ROOM LAMP
Section A – A
A
Bracket
Front of vehicle
4
9
A 3
3
Headlining
8
4 7
6
AC705372
NOTE : Claw positions : Hook positions
5 2
1 ACB05447 AB
CHASSIS ELECTRICAL
54A-168
INTERIOR LAMP
1. 2. 3. 4. 5. 6.
Removal steps Front room lamp lens LH Front room lamp lens RH Front room lamp bulb Front room lamp Front room lamp cover Downlight unit
>>A>A DEF
D/F1(more to FOOT vent): More air flows through FOOT vents.
FOOT < DEF
D/F3(more to DEF vent): More air flows through DEF vents.
FACE / FOOT Air outlet ratio
Normal
B/L2 (Initial condition)
FACE > FOOT
B/L1(more to FACE vent): More air flows through FACE vents.
FACE < FOOT
B/L3(more to FOOT vent): More air flows through FOOT vents.
Changes air distribution rate for FACE/FOOT vents during manual operation.
Auto Rear When ambient Disable Defogger(Engin temperature is 3°C Enable or less, the rear e Start) defogger will be turned on automatically. (The rear window defogger has never been activated since the ignition switch was turned on last time)
No function (Initial condition) With function
ON-VEHICLE SERVICE DRIVE BELT INSPECTION M1552001001673
Refer to GROUP 11A − Engine Adjustment, Drive Belt Tension Check .
REFRIGERANT LEVEL CHECK, DRAINING AND CHARGING M1559200100334
Remove the refrigerant by the flon reclaim machine and replenish the specified quantity of refrigerant. NOTE: Refer to the Refrigerant Recovery and Recycling Unit instruction Manual for operation of the unit.
REFILLING OF OIL IN THE A/C SYSTEM M1552020000356
Too little oil will provide inadequate compressor lubrication and cause a compressor failure. Too much oil will increase discharge air temperature.
When a compressor is installed at the factory, it contains 70 mL of compressor oil. While the A/C system is in operation, the oil is carried through the entire system by the refrigerant. Some of this oil will be trapped and retained in various parts of the system. When the following system components are changed, it is necessary to add oil to the system to replace the oil being removed with the component. Compressor oil: SUN PAG 56 or S10X Quantity Evaporator: 25 mL Condenser: 15 mL Each piping: 5 mL
HEATER, AIR CONDITIONER AND VENTILATION
55-35
ON-VEHICLE SERVICE
PERFORMANCE TEST M1552001401400
TEST CONDITION Item
Settings
Environment Measurement location al condition Temperature
In a shade or indoors 20°C − 50°C Relative humidity 30 − 80% RH
Humidity Vehicle body Hood condition Door
Fully opened
Air conditioner condition
Air conditioner switch
ON
Air volume
Maximum air volume
Temperature control
MAX COOL
Air outlet
FACE
Outside/inside air selection
Air recirculation position
Fully open for door, window, and tailgate
Engine speed
Specified idle speed after warming up
Transmission
N or P
TEST CONDITION SETTING Check that the temperature/humidity of measurement location satisfies the test conditions, and then set the vehicle body conditions to the designated status according to the test conditions. If the temperature/humidity is not within the test conditions, an accurate judgment cannot be made. Therefore, postpone the performance test.
COOLING PERFORMANCE CHECK Thermometer
Wet and dry bulb thermometer
ACB05874AB
1. Insert a thermometer into the air outlet located at the centre of instrument panel.
NOTE: Set a thermometer so that cool air from the air outlet blows directly against the sensing part. 2. Set a wet and dry bulb thermometer in the air intake of the front passenger's foot area (below the glove box). NOTE: Set a wet and dry bulb thermometer so that cool air does not blow against it. 3. Start the engine to warm up. Confirm that the engine speed of the test condition is satisfied. 4. Set the A/C control panel to the mode instructed in the test conditions. 5. Wait until the air outlet temperature is stable (approximately 10 minutes after the A/C starts), and measure dry-bulb/wet-bulb temperatures at the air outlet and the air intake. 6. If the air outlet temperature is in the range specified by the table below, it is judged normal. If the temperature is outside the permissible range in the table below, refer to the refrigerant gas pressure inspection result, and check each section according to the diagnosis chart of refrigerant system.
Garage ambient temperature 20 °C
25
30
35
40
45
50
Discharge air temperature °C
4.3 − 17.7
9.7 − 23.1
15.1 − 28.5
20.5 − 33.9
25.5 − 39.3
31.3 − 44.7
-1.1 − 12.3
HEATER, AIR CONDITIONER AND VENTILATION
55-36
ON-VEHICLE SERVICE
REFRIGERANT GAS PRESSURE CHECK CAUTION • The temperature of equipment in the engine room is high and the refrigerant gas pressure is also high immediately after the engine and A/C operation are stopped, thus leave the vehicle for a while, and then perform the refrigerant gas pressure check. • On completion, stop the engine and wait until the high-pressure side of the gauge manifold is depressurised. Then remove the quick joints and the others.
Low-pressure valve
Highpressure valve
Gauge manifold
Charging hose (red)
Charging hose (blue)
Quick joint (for highpressure)
CAUTION •
Quick joint (for lowpressure)
Sleeve A
AC106029AB
AC106028AB
High-pressure side service valve
Low-pressure side service valve
ACB03699AB
Place the quick joint onto the service valve, and press to fit the part A securely until the sleeve clicks into place. • When connecting, run your hand along the hose while pressing to ensure that there are no bends in the hose.
1. Check that the engine and A/C are stopped. 2. Close the high-pressure valve of the gauge manifold. 3. Connect the charging hose (red) to the hi-pressure side of the gauge manifold. 4. Connect the quick joint (for high pressure) to the charging hose (red). 5. Install the quick joint (for high pressure) to the high-pressure side service valve of the vehicle. 6. Close the low-pressure valve of the gauge manifold. 7. Connect the charging hose (blue) to the low-pressure side of the gauge manifold. 8. Connect the quick joint (for low pressure) to the charging hose (blue). 9. Install the quick joint (for low pressure) to the low-pressure side service valve of the vehicle. 10.Start and fully warm up the engine, and then check that the engine speed of the test condition is satisfied. 11.Set the A/C control panel to the mode instructed in the test conditions. 12.Measure the high pressure/low pressure, and check that the measurement is within the permissible range of the table below. If the value is outside the permissible range, refer to the cooling performance check result, and perform a check according to the diagnosis chart of refrigerant system.
HEATER, AIR CONDITIONER AND VENTILATION
55-37
ON-VEHICLE SERVICE
NOTE: Prior to the measurement, wait until the refrigerant pressure is stable. (Approximately 10 minutes after A/C operation start) Garage ambient temperature 20 25 °C
30
35
40
45
50
Compressor high pressure kPa 881 − 1, 377
1, 086 − 1, 582
1,291 − 1,787
1,496 − 1,992
1,701 − 2,197
1,906 − 2,402
2,111 − 2,607
Compressor low pressure kPa 204 − 369
255 − 420
306 − 471
357 − 522
408 − 573
459 − 624
510 − 675
DIAGNOSIS BY REFRIGERANT PRESSURE M1552023000225
A/C system symptom
Measurement circumstance
Cause
Measures
Cooler is not effective.
Low High High • Pressure for low pressure side is high, and high pressure side is low. • When the A/C operation is stopped, the pressures of low pressure side and high pressure side immediately become identical.
• Leakage inside compressor • Faulty compression of compressor
1. Check according to the compressor check. 1. When no foreign object is present to the oil, and when the colour is light grey, replace only the compressor. 2. When foreign objects are mixed to the oil, and the colour is black, replace the compressor and receiver. 2. Perform the evacuation sufficiently to remove the foreign objects and moisture in the cycle. 3. Fill the new gas to the specified amount.
High High High • Low pressure side/high pressure side pressure is too high. • Low pressure side piping is too hot to touch.
• Air is mixed to the refrigerant cycle. • Evacuation is insufficient.
1. Perform the evacuation sufficiently, and remove the foreign objects and moisture in the cycle. 2. Fill the new gas to the specified amount.
Hig Low Air Note h pres outl pres sure et sure tem pera ture
HEATER, AIR CONDITIONER AND VENTILATION
55-38 A/C system symptom
ON-VEHICLE SERVICE
Measurement circumstance
Cause
Measures
Hig Low Air Note h pres outl pres sure et sure tem pera ture
Sufficient Fluc Fluc Fluc cooling and tuati tuati tuati insufficient on on on cooling occur periodically.
During the air conditioner operation, the low pressure side pressure alternates between the negative pressure and normal. (also in the high pressure side, the abnormal and normal statuses are alternated).
The moisture in the refrigerant cycle becomes frozen in the expansion valve, then the circulation of refrigerant is stopped temporarily. Subsequently, the status recovers to normal by the melting of ice.
1. Replace the receiver (drier). 2. Perform the evacuation sufficiently, and remove the moisture in the cycle. 3. Fill the new refrigerant to the specified amount.
Cooler is Low Vac Fluc sometimes uum tuati not on effective. (works occasionall y)
• The low pressure side pressure indicates the vacuum, and the high pressure side indicates the low pressure. • To the piping before and after the expansion valve, frost or dew is observed.
• The foreign objects or moisture inside the refrigerant cycle deposits or freezes inside the expansion valve, and the refrigerant flow is disturbed. • Because of the expansion valve operation failure, the refrigerant flow is disturbed.
1. Check the expansion valve. 1. If foreign objects are present inside the expansion valve, remove them by using an air gun or others. 2. When no foreign object is present, the expansion valve operation failure is suspected. Therefore, replace the expansion valve. 2. Perform the evacuation sufficiently, and remove the foreign objects and moisture in the cycle. 3. Fill the new refrigerant to the specified amount.
HEATER, AIR CONDITIONER AND VENTILATION ON-VEHICLE SERVICE
A/C system symptom
Measurement circumstance
55-39
Cause
Measures
• Gas leakage is present to somewhere in the refrigerant cycle. • Refrigerant gas amount is insufficient.
1. When the pressure gauge indication is close to zero, check the leak position, and then repair the leakage. Also, when the value is lower than the standard pressure, check if the gas leakage is present, and repair if necessary. 2. After checking the leak position, sufficiently perform the evacuation, then fill the new gas to the specified amount.
High High Slig Low pressure side/high htly pressure side pressure high is too high.
• Refrigerant amount is excessive. • Condenser cooling is insufficient.
1. Clean the condenser fin (fouling, fin clogging) 2. Check the condenser fan motor (radiator fan) operation. 3. When 1 and 2 are normal, recover all the refrigerant. Then, perform a sufficient evacuation again, and fill the new gas to the specified amount.
High High High • Low pressure side/high pressure side pressure is too high. • Frost or dew is formed to the low pressure side.
Expansion valve trouble (valve opened excessively)
Replace the expansion valve.
Nor mal
Because of the slight difference of measurement environment, secular change of vehicle, or others, it is possible that the outlet temperature fluctuation has occurred.
Check the status for a while, and if the status does not improve, recover all the refrigerant, then fill to the appropriate amount.
Hig Low Air Note h pres outl pres sure et sure tem pera ture
Cooling Low Low Slig effectivene htly ss is bad. high
Nor mal
• Low pressure side/high pressure side pressure is low. • Outlet air temperature is high.
Slig htly high
HEATER, AIR CONDITIONER AND VENTILATION
55-40
ON-VEHICLE SERVICE
COMPRESSOR CHECK Trouble symptom
Check method/circumstance
Cause
Measures
Abnormal noise from compressor main body at A/C operation (rattling noise)
• Refrigerant cycle gauge Abnormal noise due to pressure check excessive refrigerant 1. Low pressure side/high charging pressure side pressure is high. 2. Pressure hunting occurs. • Check the refrigerant Damage to inside the cycle gauge pressure. compressor When the pressure difference between the low pressure side and high pressure side is small, remove the compressor oil, and perform the oil judgment.
Compressor malfunction (belt slip)
Fill an appropriate amount of refrigerant.
Compressor oil judgment result: Between transparent and grey/ No contamination with foreign materials
Measures: Replace only the compressor. Compressor oil judgment result: Between grey and black/ Contaminated with foreign materials
Check the compressor rotation, and if a seizure or sticking is present, remove the compressor oil, then perform a judgment.
Measures: Replace the compressor and the rece AC610320AB
SIMPLE INSPECTION OF THE A/C PRESSURE SENSOR M1552014700668
1. Assemble a gauge manifold on the high pressure service valve.
High-pressure side service valve
A/C pressure sensor ACB03811AB
A/C pressure sensor side
Harness side
MB991658 AC507502AB
2. Disconnect the A/C pressure sensor connector and connect the special tool test harness (MB991658) as shown.
HEATER, AIR CONDITIONER AND VENTILATION
55-41
ON-VEHICLE SERVICE
3. Start the engine and then turn ON the air conditioner switch. Output voltage (V) 5
Not applied
4 3 2 1 0
Battery voltage Checking terminal
1 2 3 Refrigerant pressure (MPa) AC208297AB
4. At this time, check to see that the voltage of the A/C pressure sensor connector terminal No. 2 reflects the specifications of the figure. NOTE: . • The allowance shall be defined as ±5%. • The A/C pressure sensor is incorporated in the discharge flexible hose, and the high-pressure service valve is incorporated in liquid pipe B. Therefore, the pressure at the A/C pressure sensor is 0.1 to 0.3 MPa higher than that at the gauge manifold.
3−4
Normal condition No continuity
• Connect terminal 1 to the positive battery terminal • Connect terminal 2 to the negative battery terminal
Continuity exists (2 Ω or less)
A/C COMPRESSOR RELAY CONTINUITY CHECK A/C compressor relay
RELAY CHECK M1552008801562
BLOWER RELAY CONTINUITY CHECK
ACB04408
4 Blower relay
3 1
2
ACB05914AB
ACB04411
Battery voltage Checking terminal Not applied
4 3 1
2
ACB05913AB
• Connect terminal 1 to the positive battery terminal • Connect terminal 2 to the negative battery terminal
3−4
Normal condition No continuity Continuity exists (2 Ω or less)
HEATER, AIR CONDITIONER AND VENTILATION
55-42
HEATER CONTROL UNIT
IDLE-UP INSPECTION M1552001602076
1. Before inspection, set the vehicle to the pre-inspection condition. 2. Check that the idling speed is within the standard value range. Standard value: 700 ± 50 r/min NOTE: The idling speed is controlled by the ISC system automatically, so does not require adjustment. 3. Operate the air conditioner by turning on the A/C switch. Then check that the idling speed is within the standard value range. Standard value: 750 ± 100 r/min
ACB03812AB
NOTE: The arrow on the clean air filter should face downwards.
Front view
REPLACE THE CLEAN AIR FILTER
7803A004
>PP.PET< helsatech PF087
Made in
XX.XX.XX XX:XX
AIR FLOW
M1552020600529
1. Remove the glove box (Refer to GROUP 52A − Instrumental panel assembly, ). 2. Loosen the two lugs as shown to replace the clean air filter.
Install with the arrow facing down. AC508409AC
3. Install the glove box.
HEATER CONTROL UNIT REMOVAL AND INSTALLATION M1554014700910
Pre-removal and Post-installation Operation • Centre panel assembly (Refer to GROUP 52A, Instrument panel assembly )
Centre panel assembly
1.6 ± 0.4 N·m
1 ACB05963AB
1.
Removal Heater controller assembly
HEATER, AIR CONDITIONER AND VENTILATION HEATER UNIT AND BLOWER ASSEMBLY
55-43
HEATER UNIT AND BLOWER ASSEMBLY REMOVAL AND INSTALLATION M1552020801098
WARNING
For removal and installation of the passenger's side air bag module, always observe the service procedures described in GROUP 52B, Driver’s Air Bag Module to Passenger’s (Front) Air Bag Module . Pre-removal and Post-installation Operation • Refrigerant draining and Refilling (Refer to Charging and Discharging P.55-34). • Engine coolant replacement (Refer to GROUP 14, On-vehicle Service ). • Dash panel heat protector (Refer to GROUP 42A, Loose Panel ).
HEATER, AIR CONDITIONER AND VENTILATION
55-44
HEATER UNIT AND BLOWER ASSEMBLY
-Pipe coupling
10 1
11
2, 3
4
A/C compressor oil: SUN PAG 56 or S10X
4.9 ± 0.9 N·m 11 ± 4 N·m
2 3
24 ± 4 N·m 50 ± 5 N·m
4
5
N
11 ± 4 N·m
9
13 ± 2 N·m
11 ± 4 N·m
8
7
20 ± 5 N·m
6 18 ± 7 N·m
1. 2.
3. 4. 5. •
Removal steps Heater piping hose connection A/C compressor suction hose connection A/C condenser outlet pipe connection O-ring A/C evaporator drain hose Instrument panel removal and Installation (Refer to GROUP 52A, Instrument Panel ).
20 ± 4 N·m
ACB03694 AC
Removal steps (Continued) Instrument panel wiring harness connector disconnection 6. Earth bolt 7. Centre flame assembly 8. Earth bolt 9. Front deck crossmember 10. Heater air intake duct 11. Heater assembly •
HEATER, AIR CONDITIONER AND VENTILATION HEATER HOSE
55-45
REMOVAL SERVICE POINTS A/C COMPRESSOR SUCTION HOSE AND A/C CONDENSER OUTLET PIPE DISCONNECTION CAUTION As the compressor oil and receiver are highly moisture absorbent, use a non-porous material to plug the hose and nipples. To prevent the entry of dust or other foreign bodies, plug the dismantled hose and the nipples of the expansion valves.
HEATER HOSE REMOVAL AND INSTALLATION M1551007700221
3 1
2 ACB03700AB
1. 2.
Heater piping hose removal steps Heater piping hose A Heater piping hose B
55-46
HEATER, AIR CONDITIONER AND VENTILATION MODE SELECTION DAMPER CONTROL MOTOR, AIR MIXING DAMPER CONTROL MOTOR,
MODE SELECTION DAMPER CONTROL MOTOR, AIR MIXING DAMPER CONTROL MOTOR, OUTSIDE/INSIDE AIR SELECTION DAMPER CONTROL MOTOR, POWER TRANSISTOR AND BLOWER MOTOR REMOVAL AND INSTALLATION M1554014900594
1 3 2 ACB05868AB
•
1.
Power transistor removal steps Bottom cover assembly (passenger's side) (Refer to GROUP 52A − Instrument Panel ). Power transistor
•
2. 3.
Blower motor removal steps Bottom cover assembly (passenger's side) (Refer to GROUP 52A − Instrument Panel ). Hose Blower motor
6
5*
4
NOTE: * ACB05867AB
HEATER, AIR CONDITIONER AND VENTILATION
55-47
MODE SELECTION DAMPER CONTROL MOTOR, AIR MIXING DAMPER CONTROL MOTOR, OUTSIDE/INSIDE
• 4.
Air mixing damper control motor, mode selection damper control motor removal steps Foot duct (Refer to P.55-59). Air mixing damper control motor or Air mixing damper control motor (RH)
5.
6.
Air mixing damper control motor, mode selection damper control motor removal steps (Continued) Air mixing damper control motor (LH) Mode selection damper control motor
9
8 7
ACB05869 AB
•
>>B>A>A>BPP.PET< helsatech PF087
Made in
AC611918AK
XX.XX.XX XX:XX
Check that the motor turns when applying battery power between the connector terminals. Also check to see that there is no abnormal sound emitted from the motor at this time.
AIR FLOW
Install with the arrow facing down. AC508409AC
AMBIENT TEMPERATURE SENSOR REMOVAL AND INSTALLATION M1554003400915
Pre-removal and Post-installation Operation • Air cleaner intake duct (Refer to GROUP 15, Air Cleaner ) • Headlamp support upper panel cover (Refer to GROUP 51, Radiator Grille )
1 ACB04999AB
HEATER, AIR CONDITIONER AND VENTILATION INTERIOR TEMPERATURE SENSOR
1.
Removal Ambient temperature sensor
INSPECTION M1552014305193
55-49
Check to see that the resistance shown in the graph is almost satisfied when measuring the resistance between the terminals under two or more different temperature conditions.
AMBIENT TEMPERATURE SENSOR CHECK RESISTANCE (k ) 10 9 8 7 6 5 4 3 2 1 0 10 20 30 -10 0 TEMPERATURE (˚C)
40 AC508067AC
INTERIOR TEMPERATURE SENSOR REMOVAL AND INSTALLATION M1554026400488
WARNING
For removal and installation of the Knee air bag module, always observe the service procedures described in GROUP 52B, Knee Air Bag Module . Pre-removal and Post-installation Operation • Knee air bag module (Refer to GROUP 52B − Knee Air Bag Module ).
Section A-A Claw
1 Instrument panel AC704919
1 A
A
2
ACB05823AB
HEATER, AIR CONDITIONER AND VENTILATION
55-50
COMPRESSOR ASSEMBLY
Check to see that the resistance shown in the graph is almost satisfied when measuring the resistance between the terminals under two or more different temperature conditions.
Removal steps Aspirator hose Interior temperature sensor
1. 2.
INSPECTION M1552014305201
INTERIOR TEMPERATURE SENSOR CHECK RESISTANCE (k ) 20 15 10 5 0 -10 0
20
40
60
TEMPERATURE (˚C)
80 AC103488AD
COMPRESSOR ASSEMBLY REMOVAL AND INSTALLATION M1552004403609
CAUTION • When removing the compressor, be careful not to subject the pulley and the clutch to impact. Pre-removal operation • Discharging refrigerant (Refer to P.55-34) • Engine room under cover front A and B, Engine room side cover removal (Refer to GROUP 51, Under Cover ). • Drive belt removal (Refer to GROUP 11A − Crankshaft Pulley )
Post-installation Operation • Drive belt installation (Refer to GROUP 11A − Crankshaft Pulley ) • Drive belt tension check and adjustment (Refer to GROUP 11A − Drive Belt Tension Check ). • Charging refrigerant (Refer to P.55-34) • Engine room under cover front A and B, Engine room side cover installation (Refer to GROUP 51, Under Cover ).
-Pipe coupling
2 N
3
6
10 ± 2 N·m 23 ± 6 N·m
1 1, 2
3
A/C compressor oil: SUN PAG 56 or S10X
10 ± 2 N·m
3N 23 ± 6 N·m 23 ± 6 N·m
5 23 ± 6 N·m
4 AC900337AG
HEATER, AIR CONDITIONER AND VENTILATION
55-51
COMPRESSOR ASSEMBLY
>>A>A>F>E>D>C>B>A>A>B>C>D>E>F>A>A>A>A>B>A>A>B>B>A>A>B>C>B>A>A>B>C>A>A
