Faulty Signal - Permanent Fault

Faulty signal. Permanent fault

Information
This diagnostic trouble code (DTC) indicates that the immobilizer code does not match between the engine control module (ECM) and the central electronic module (CEM). This may be because:
- the immobilizer code in the engine control module (ECM) is incorrect i.e. the code does not correspond to the code stored in the central electronic module (CEM)
- the engine control module (ECM) is not programmed and has no immobilizer code
- the immobilizer code in the central electronic module (CEM) is incorrect
- the central electronic module (CEM) is not programmed and has no immobilizer code
- the engine control module (ECM) is damaged
- the central electronic module (CEM) is damaged.

Note! A programmed engine control module (ECM) or central electronic module (CEM) cannot be moved from one vehicle to another.

Hint: Read off the diagnostic trouble codes (DTCs) for the central electronic module (CEM).

For further information about this diagnostic trouble code (DTC), see Diagnostic Trouble Code (DTC) Information.

Other information:
- To access and replace the engine control module (ECM), see Engine control module (ECM), replacing Service and Repair
- To access or replace the central electronic module (CEM), see Central electronic module (CEM), replacing Central Electronic Module (CEM), Replacing
- For information about signals, see Signal specification Signal Specification, ECM


Continue - Verification

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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 - FAULT-TRACING FAILED

No - Attempt New Test

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FAULT-TRACING FAILED - FAULT-TRACING FAILED

Attempt New Test - Information

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Verification

Hint: After carrying out the repair, check that the fault has been remedied.




- Ignition off
- Reinstall connectors, components etc.
- Start the engine.

Did the engine start?

Yes - Fault Found

No - Fault-tracing information

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