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Autodata - Diagnostic Trouble Codes Fault locations and probable causes - 2004 edition

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I<br />

Engine management I<br />

<strong>Trouble</strong> code identification<br />

Flash type <strong>Fault</strong> location Probable cause<br />

Start of diagnosis<br />

Engine coolant temperature (ECT) sensor -<br />

low voltage<br />

Engine coolant temperature (ECT) sensor -<br />

high voltage<br />

Fuel temperature sensor - low voltage<br />

Fuel temperature sensor - high voltage<br />

I<br />

-<br />

Wiring short to earth, supply voltage, ECT sensor,<br />

I EcM<br />

Wiring open circuitlshort to positive, ECT sensor,<br />

I ECM<br />

Wiring short to earth, supply voltage,<br />

fuel temperature sensor, ECM<br />

Wiring open circuitlshort to positive,<br />

fuel temperature sensor, ECM<br />

Crankshaft position (CKP) sensor - implausible signal Wiring short to earthlopen circuit, CKP sensor,<br />

ECM<br />

Accelerator pedal position (APP) sensor -high voltage Wiring short to earthlopen circuitlshort to positive,<br />

I APP sensor, ECM<br />

Accelerator pedal position (APP) sensor - low voltage Wiring short to earthlopen circuit, APP sensor, ECM<br />

Accelerator pedal position (APP) sensor - implausible<br />

signal<br />

Vehicle speed sensor (VSS) - implausible signal<br />

Mass air flow (MAF) sensor - low voltage<br />

Mass air flow (MAF) sensor - high voltage<br />

Mass air flow (MAF) sensor - implausible signal<br />

Crankshaft position (CKP) sensor - no signal<br />

Exhaust gas recirculation (EGR) system<br />

Fuel injection timing solenoid<br />

Brake pedal position (BPP) switch - implausible signal<br />

Alarm system<br />

Manifold absolute pressure (MAP) sensor -<br />

low voltage<br />

Manifold absolute pressure (MAP) sensor -<br />

high voltage<br />

Manifold absolute pressure (MAP) sensor -<br />

implausible signal<br />

Battery - low voltage<br />

Fuel shut-off solenoid - defective<br />

Engine control module (ECM)<br />

Fuel quantity adjuster position sensor - high1<br />

low voltage<br />

Wiring short to earthlopen circuitlshort to positive,<br />

APP sensor, ECM<br />

Wiring short to earthlopen circuitlshort to positive,<br />

supply voltage, VSS, ECM<br />

Wiring short to earthlopen circuit, supply voltage,<br />

earth connection, MAF sensor, ECM<br />

Wiring short to earthlopen circuitlshort to positive,<br />

earth connection, MAF sensor, ECM<br />

Wiring short to earthlopen circuitlshort to positive,<br />

supply voltage, earth connection, MAF sensor,<br />

intake leak, ECM<br />

Wiring short to earthlopen circuit, CKP sensor,<br />

/ ECM<br />

Hoses blockedlleaking, wiring short to earthlopen<br />

circuit, EGR solenoid, EGR valve, vacuum pump,<br />

MAF sensorlwiring, ECM<br />

Wiring open circuit, supply voltage, fuel injection<br />

timing solenoid, ECM<br />

Fuse, wiring open circuitlshort to positive,<br />

supply voltage, BPP switch, ECM<br />

Alarm system defective<br />

Wiring short to earthlopen circuit, MAP sensor,<br />

I ECM<br />

Wiring open circuitlshort to positive, MAP sensor,<br />

ECM<br />

Wiring short to earthlopen circuitlshort to positive,<br />

supply voltage, MAP sensor, ECM<br />

I Earth connection, battery, alternator<br />

I Wiring short to positive, fuel shut-off solenoid<br />

Wiring, supply voltage, earth connection, ECM<br />

Wiring short to earthlopen circuitlshort to positive,<br />

fuel quantity adjuster position sensor, ECM

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