Honda Ecu Pinout [PDF]

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OBD 0 Pinout '88 HF/Si A1 No.1 INJ A2 GRD w/A4 to Main Relay A3 No.2 INJ A4 GRD w/A2 to Main Relay A5 No.3 INJ A6 Purge Cut-Off Solenoid Valve A7 No.4 INJ A8 Lock-up Control Solenoid Valve A9 -



'90-1 DX (Std.) Aux INJ w/A3 GRD w/A4 to Main Relay Aux INJ w/A1 GRD w/A2 to Main Relay Main INJ w/A7 Purge Cut-Off Solenoid Valve Main INJ w/A5 Lock-up Control Solenoid Valve -



'90-1 HF/Si No.1 INJ GRD w/A4 to Main Relay No.2 INJ GRD w/A2 to Main Relay No.3 INJ Purge Cut-Off Solenoid Valve (HF Only) No.4 INJ Lock-up Control Solenoid Valve -



A10



-



EGR Valve (CA A/T Only)



EGR Valve (HF Only)



A11 A12 A13 A14 A15 A16 A17 A18 B1



EACV w/A17 Main Relay w/A14 Main Relay w/A15 Main Relay w/A12 Main Relay w/A13 GRD w/A18 EACV w/A11 GRD w/A16 Hazard Fuse w/Brake Switch Tandem Valve Control Solenoid Valve A/C Clutch Relay Radiator Fan Relay Alternator Check Engine Light Shift Position Sensor (A/T Only) A/C Switch Shift Position Sensor (AT Only) No.2 Fuse (10A)



EACV w/A17 Main Relay w/A14 Main Relay w/A15 Main Relay w/A12 Main Relay w/A13 GRD w/A18 GRD w/A16 Hazard Fuse w/Brake Switch Tandem Valve Control Solenoid Valve A/C Clutch Relay Radiator Fan Relay Alternator Check Engine Light Shift Position Sensor (A/T Only) A/C Switch Shift Position Sensor (AT Only) No.2 Fuse (10A)



EACV w/A17 Main Relay w/A14 Main Relay w/A15 Main Relay w/A12 Main Relay w/A13 GRD w/A18 GRD w/A16 -



'89-92 EF8/9 SiR No.1 INJ GRD w/A4 to Main Relay No.2 INJ GRD w/A2 to Main Relay No.3 INJ Purge Cut-Off Solenoid Valve No.4 INJ Spool (VTEC) Solenoid Valve Pressure Regulator Cut-Off Solenoid Valve EACV Main Relay w/A14 Main Relay w/A15 Main Relay w/A12 Main Relay w/A13 GRD w/A18 GRD w/A16 Hazard Fuse w/Brake Switch



-



-



Fast Idle Valve Radiator Fan Relay Alternator Check Engine Light A/C Switch w/B8 A/C Switch w/B7 Crank Angle Sensor Clutch Switch (HF Only) Crank Angle Sensor No.2 Fuse (10A)



A/C Clutch Relay Oil Pressure Switch Check Engine Light(10A) A/C Switch Brake Switch Crank Angle Sensor Rear Defogger Switch Crank Angle Sensor No.2 Fuse (10A)



B2 B3 B4 B5 B6 B7 B8 B9 B10 B11 B12 B13



B14 B15 B16 B17 B18 B19 B20 C1 C2 C3 C4 C5 C6 C7



Alternator Igniter Unit w/B17 Speed Sensor Igniter Unit w/B15 ELD Ign. Timing Adj. Connector Crank Angle Sensor Crank Angle Sensor TDC Sensor TDC Sensor TA Sensor TW Sensor Throttle Angle Sensor



C8



-



C9



PA Sensor



Alternator Igniter Unit w/B17 Speed Sensor Igniter Unit w/B15 ELD Ign. Timing Adj. Connector Crank Angle Sensor Crank Angle Sensor TDC Sensor TDC Sensor TA Sensor TW Sensor Throttle Angle Sensor EGR Valve Lift Sensor (CA A/T Only) PA Sensor



C10



Brake Switch



Brake Switch



C11 C12 C13 C14 C15 C16



MAP Sensor PA Sensor PA Sensor MAP Sensor MAP Sensor O2 Sensor A



MAP Sensor PA Sensor PA Sensor MAP Sensor MAP Sensor O2 Sensor A



Alternator Igniter Unit w/B17 Speed Sensor Igniter Unit w/B15 ELD Ign. Timing Adj. Connector Cylinder Position Sensor Cylinder Position Sensor TDC Sensor TDC Sensor TA Sensor TW Sensor Throttle Angle Sensor



Alternator Igniter Unit w/B17 Speed Sensor (Electrical) Igniter Unit w/B15 Knock Sensor Ign. Timing Adj. Connector Cylinder Position Sensor Cylinder Position Sensor TDC Sensor TDC Sensor TA Sensor TW Sensor Throttle Angle Sensor



-



O2 Sensor B



PA Sensor Brake and Reverse Light Switch (HF Only) MAP Sensor Throttle Angle Sensor Throttle Angle Sensor MAP Sensor MAP Sensor O2 Sensor A



P/S oil switch Brake Switch MAP Sensor Throttle Angle Sensor Throttle Angle Sensor MAP Sensor MAP Sensor O2 Sensor A



Last edited by pissedoffsol; 06-19-2006 at 10:48 PM.



OBD 1 and 2 OBD2a A01 A02 A03 A04 A05



OBD2b B05 B04 B03 B11 A08



Function Injector 4 Injector 3 Injector 2 Injector 1 SO2H



OBD1 A02 A05 A03 A01



Color Yellow Light Blue Red Brown



Notes



No connection on OBD1



A06 A08 A09 A10 A11 A12 A15 A16 A17 A18 A19 A20 A22 A23 A24 A27 C01 C02 C03 C04 C05 C06 C07 C10 C11 C12 C13 C14 C15 C16 C17 C18 D01 D02 D03



C01 B12 B20 B02 B01 B23 A06 A16 A17 A18 A02 B13 B22 B10 B09 A20 C31 C08 C20 C29 A27 A24 A10 B21 C22 C09 C21 C30 C10 A26 C05 C23 C27 C26 C17



PO2H VTS LG1 PG1 IGP1 IACV PCS FLR ACC MIL ALTC ICM LG2 PG2 ICP2 FANC CKFP CKPP TDCP CYPP ACS STS SCS VBU CKFM CKPM TDCM CYPM VTM PSW ALTF VSS TPS ECT MAP



A06 A04 A26 A23 A25 A09 A20 A07 A15 A13 A16 A21 B02 A24 B01 A12



Orange/black Orange/White Black/Red Black Yellow/Black Green/White Red Green/Yellow Black/Red Green/Orange White/Yellow Red/Green Brown Black Yellow Black Yellow/Green



No connection on D16Y8 P2Nb



No connection on OBD1 B15 B13 B11 B05 B09 D04 D01



Blue/Green Orange/Blue Orange Blue/Red Blue/White Brown White/Blue No connection on OBD1



B16 B14 B12 D06 B08 D09 B10 D11 D13 D17



Blue/Yellow White/Blue White Orange/Green Brown/Red Pink Yellow/Blue Pink/Black Red/White Pink/White



Connected to VTS on OBD2a No connection on D16Y8 P2Nb



D04 D05 D06 D07 D08 D10 D11 D12 D14 D16



C19 A32 C03 C16 C25 C28 C18 C07 A23 A30



VCC1 BKSM KS PO2S IAT VCC2 SG2 SG1 SO2S EL



D19 D02 D03 D14 D15 D20 D22 D21



Yellow/Green Greem/White Red/Green White



D10



Green/Red



No connection on P08, P28



Yellow/White Green/White Green/Blue No connection on OBD1 No connection on D16Y8 P2Nb



Last edited by pissedoffsol; 06-19-2006 at 10:49 PM.



OBD0 DPFI to MPFI Comparison Pinouts



DPFI Pin#



Wire Color



MPFI Function



Wire Color



Function



A1



Yellow 2



Aux Injector



Brown



#1 Injector



A2



Black 1



Main Relay/Ground



Black 1



Main Relay/Ground



A3



Yellow 1



Aux Injector



Red



#2 Injector



A4



Black 2



Main Relay/Ground



Black 2



Main Relay/Ground



A5



Red 2



Main Injector



Light Blue



#3 Injector



A6



Green



Purge Cut Off Solenoid Valve (Coil)



Green



Purge Cut Off Solenoid Valve (Coil)



A7



Red 1



Main Injector



Yellow 1



#4 Injector



A8



Yellow 3



Sedan LX A/T



Blue/Yellow



EACV (Coil)



A10 Red



EGR Solenoid Control Valve (Coil) (A/T only)



A11 Blue/Yellow



EACV (Coil)



A12 Green/Black 2 Main Relay



Green/Black 2 Main Relay



A13 Yellow/Black 2 Main Relay



Yellow/Black 2 Main Relay/Injector Resistor Box



A14 Green/Black 1 Main Relay



Green/Black 1 Main Relay



A15 Yellow/Black 1 Main Relay



Yellow/Black 1 Main Relay/Injector Resistor Box



A16 Brown/Black



Ground



Brown/Black



Ground



Ground



Black/Red



Ground



A17 A18 Black/Red



Pin#



Wire Color



Function



Wire Color



Function



B1



White/Green



Hazard Fuse



White/Green



Hazard Fuse



B2



Orange



Tandem Control Solenoid Valve



Blue 1



Fast Idle Control Solenoid Valve



B3



Yellow



A/C Clutch Relay



Yellow



A/C Clutch Relay



B4



Yellow/Green



Radiator Fan Relay



Yellow/Green



Radiator Fan Relay



B5



White/Yellow



Alternator



White/Yellow



Alternator



B6



Green/Orange



Check Engine Warning Light



Green/Orange



Check Engine Warning Light



B7



Green/Orange



A/T Shift Position Console Switch (Park, Neutral)



B8



Blue/Red



A/C Switch



Blue/Red



A/C Switch



Orange



Crank Angle Sensor



B9 B10



B11 Green/Black



A/T Shift Position Console Switch (Drive)



B12



White



Crank Angle Sensor



B13 Blue White



Main Relay



Blue White



Main Relay



B14 Blue 2



To Yellow, To Alternator



Blue 2



Alternator



B15 White 1



Ignitor Unit



White 1



Ignitor Unit



B16 Yellow/Red



Speed Sensor



Yellow/Red



Speed Sensor



B17 White 2



Ignitor Unit



White 2



Ignitor Unit



B19 Green/Red



Electric Load Detector



Green/Red



Electric Load Detector



B20 Brown



Ignition Timing Adjusting Connector



Brown



Ignition Timing Adjusting Connector



B18



Pin#



Wire Color



Function



Wire Color



Function



C1



Orange



Crank Angle Sensor



Blue/Green



Cylinder Position Sensor



C2



White 4



Crank Angle Sensor



Blue/Yellow



Cylinder Position Sensor



C3



Orange/Blue



TDC Sensor



Orange/Blue



TDC Sensor



C4



White/Blue



TDC Sensor



White/Blue



TDC Sensor



C5



Red/Yellow



TA Sensor



Red/Yellow



TA Sensor



C6



Red/White 1



TW Sensor



Red/White 1



TW Sensor



C7



Red/Blue



Throttle (Position) Angle Sensor (TPS)



Red/Blue



Throttle (Position) Angle Sensor (TPS)



C8



Yellow



EGR Lift Valve Sensor



C9



Red/White 2



PA Sensor



Red/White 2



PA Sensor



C10 Green/White 3 Brake Switch



Green/White 3 Brake Switch



C11 White 1



MAP Sensor



White 1



MAP Sensor



C12 Green/White 2



EGR Lift Valve Sensor/Pa Sensor/Ignition Timing Adjusting Connector/TA Sensor/TPS Sensor/TW Sensor



Green White 2



Pa Sensor/Ignition Timing Adjusting Connector/TA Sensor/TPS Sensor/TW Sensor



C13 Yellow/White



EGR Lift Valve Sensor/Pa Sensor/TPS Sensor



Yellow/White



Pa Sensor/TPS Sensor



C14 Green/White 1 MAP Sensor



Green/White 1 MAP Sensor



C15 Yellow/Red



MAP Sensor



Yellow/Red



MAP Sensor



C16 White 3



O2 Sensor



White 3



O2 Sensor



Last edited by pissedoffsol; 06-19-2006 at 10:51 PM.