Signal Faulty. Permanent Fault

Signal faulty. Permanent fault

Checking the signal wire
Visually check the immobilizer connectors as described in Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault
Check the signal wire between engine control module B22 ( B32) and immobilizer B5 ( A35) for an open circuit as described in Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault , for a short circuit to ground as described in Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault , and for a short circuit to voltage supply as described in Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Do the necessary corrective action.
Then try to start the vehicle.

Additional information:
- to access/replace the immobilizer, see Replacing immobilizer control module Replacing Immobilizer Control Module.
- To access/replace the engine control module, see Replacing the engine control module (ECM) Service and Repair.
- For information on signals, see Signal specification Signal Specifications.
- For immobilizer signal description see Immobilizer signal specification Immobilizer Signal Specification.





Did the vehicle start?

Yes - FAULT FOUND

No - Checking the components and programming

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Checking the components and programming
If the checking of wiring and connections did not lead to the fault being remedied, the cause may be that the VIN numbers in the immobilizer and engine control module (ECM) do not correspond. This occurs when one of these has been reused from another vehicle. Replace with a new, unused unit.
Another reason can be that the immobilizer has been programmed with the incorrect engine type at installation.
The immobilizer or engine control module (ECM) may be damaged.
Remedy as necessary.

Additional information:
- to access/replace the immobilizer, see Replacing immobilizer control module Replacing Immobilizer Control Module.
- To access/replace the engine control module, see Replacing the engine control module (ECM) Service and Repair.
- For information on signals, see Signal specification Signal Specifications.
- For immobilizer signal description see Immobilizer signal specification Immobilizer Signal Specification.

Continue - FAULT FOUND

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