Signal Too Low. Permanent Fault

Signal too low. Permanent fault

Checking the signal cable








- Ignition off
- Idle air control (IAC) valve disconnected.
Check the cable between idle air control (IAC) valve connector terminal 2 (control module side) and engine control module (ECM) terminal #64. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Remedy as necessary.
Try a new idle air control (IAC) valve if no fault is found during the above fault-tracing.

Other information:
- To replace the idle air control (IAC) valve, see Replacing the idle air control (IAC) valve Service and Repair.













Continue - Verification

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Verification








- Ignition off
- Reconnect the connectors, reinstall components etc.
- Connect VCT2000
- Ignition on.
Click the VCT2000 symbol to activate the idle air control (IAC) valve.





Does the idle air control (IAC) valve click?

Yes - FAULT FOUND

No - No Fault Found Fault-tracing information

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Fault-tracing information




Information

Fault-tracing information
The fault should have been detected and remedied. As this is not the case fault-tracing has failed.
Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Do you want to exit fault-tracing?

Yes - Exit fault-tracing

No - Attempt New Test

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FAULT-TRACING FAILED - No Fault Found

Attempt New Test - Checking the signal cable

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