Caterpillar 3412 Schematics [PDF]

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CHERPILLAR”



3412



9XFl -UP



Industrial



FORM NO. SENR4657-01 FOR USE IN SERVICE MANUAL: 3412 industrial Engine, SENR4655



Engines



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COOLANT TEMPERATURE SENSOR



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RACK POSITION SENSOR



ENGINE SPEED SENSOR



RACK SOLENOID



SHUTOFF SOLENOID



3412 PEEC SCHEMATIC VOLTAGES SYSTEM VERSION: PEEC 2.5 Operating Voltage = 8.0 + .4 V Reference Voltage = 5.0 + .25 V



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Rack Position Sensor Ignition ON Only: .3 V < Rack < 2.0 V Engine Running (constant speed): .3 V < Rack < 5.0 V



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PERSONALITY MODULE



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Control Group (Transducer) 1.53 V < Oil Pressure no upper limit 0.75 < Boost Pressure < 5.0 V 0.75 < ATM Pressure < 5.0 V



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Shutoff Solenoid Pull-In Voltage > 4.5 V 1.5 V < Hold-In Voltage < 2.5 V Hold-In Current = 1.3 A



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,INPUT



ELECTRONIC CONTROLS WIRING DIAGRAM



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ABBREVIATIONS Cl c2 DL ESS K PEEC SSMPU TC WTS FPS



Converter Converter Diagnostic Lamp Electronic Speed Switch Hourmeter Oil Pressure Sensor Electronic Control Speed Switch Mag Pick Up Throttle Control Water Temp Sensor Fuel Pressure Switch



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