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

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IEngine management<br />

Erasing<br />

Method 1<br />

Ensure ignition switched OFF.<br />

Bridge data link connector (DLC) terminals 1 <strong>and</strong> 4 with a<br />

switched lead - contacts normally open 0.<br />

Connect LED test lamp between data link connector (DLC)<br />

terminals 3 <strong>and</strong> 5 0.<br />

Access trouble codes. Switch ignition OFF.<br />

Operate switch <strong>and</strong> hold.<br />

Switch ignition ON.<br />

Release switch after 5 seconds. Check that LED flashes.<br />

ldle speed control (ISC) actuator activated. <strong>Trouble</strong> code<br />

displayed: 1232.<br />

Operate switch for 4-6 seconds to activate each of the<br />

following components:<br />

Intake manifold heater. <strong>Trouble</strong> code displayed: 4342.<br />

Evaporative emission (EVAP) canister purge valve. <strong>Trouble</strong><br />

code displayed: 4343.<br />

After activation of last component operate switch for<br />

4-6 seconds to display flash code 0000 (long flashes).<br />

<strong>Fault</strong> memory automatically erased.<br />

Repeat checking procedure to ensure no data remains in<br />

ECM fault memory.<br />

Method 2<br />

Ensure ignition switched OFF.<br />

Disconnect ECM multi-plug or battery earth lead.<br />

NOTE: ECM adaptive memory may be erased causing erratic<br />

running faults. Carry out road test to allow ECM to<br />

re-learn basic values.<br />

WARNING: Disconnecting the battery may erase memory from<br />

electronic units (e.g. radio, clock).<br />

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

0000<br />

1111<br />

End of test sequenee<br />

Engine control module (ECM)<br />

I Probable cause<br />

1232 I Idle speed control (ISC) actuator I Wiring, multi-plug incorrectly wired, ISC actuator<br />

2113 0<br />

2121<br />

221 2<br />

Crankshaft position [CKP) sensor<br />

Closed throttle position (CTP) switch<br />

I 1<br />

Throttle position (TP) sensor<br />

231 2 I Engine codant temperature (ECT) sensor 1 Wiring, poor connection, ECT sensor<br />

2322<br />

2341<br />

2342<br />

Intake air temperature (IAT) sensor<br />

Heated oxygen sensor (HO2S) -<br />

lambda control<br />

Heated oxygen sensor (X02S)<br />

-<br />

Wiring, ECM<br />

Insecure rotor, wiring, CKP sensor<br />

Accelerator cable adjustment, CTP switch adjustment, wiring,<br />

CTP switch<br />

Wiring, poor connection, TP sensor<br />

Wiring, IAT sensor<br />

Heating inoperative, exhaust leak, misfire, fuel pressurelpump,<br />

EVAP canister purge valve<br />

Wiring, H02S, heating inoperative, fuel level low<br />

4444<br />

I I -<br />

No fault found -<br />

<strong>Trouble</strong> code may be displayed if engine is not idling during self-diagnosis due to missing CKP sensor signal. Ignore trouble code if<br />

engine starts.<br />

rn After repairs, erase learnt lambda control values: Wait 30 seconds. Disconnect battery or ECM multi-plug for at least 30 seconds.<br />

Carry out road test to allow ECM to re-learn basic values.

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