CHERPILLAR”
3412
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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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Throttle Position Sensor 24 V Operating 5% < PWM < 95% 100 Hz < PWM Frequency < 1000 Hz
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TRANSDUCER MODULE
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Engine Speed Sensor Frequency < 460 Hz
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Coolant Temperature Sensor 0.3 V < Temperature < 4.7 V
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,INPUT
ELECTRONIC CONTROLS WIRING DIAGRAM
(b-20mA)
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FUEL
PRESSURE SWITCH
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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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(5 AMP)
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24/12 V DC CONVERTERS
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VOLTS TO 24 VOLT LINE
REMOTE JUNCTION BOX WIRING DIAGRAM
(GROUND)
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