Signal Too High. Permanent Fault

Signal too high. Permanent fault

Checking the signal cable




- Ignition off
- Disconnect the connector from the central electronic module (CEM)
- Disconnect the immobilizer antenna unit.

Check the signal cable between central electronic module (CEM) connector terminal #13D and immobilizer antenna unit terminal #3. Check for a short-circuit to supply voltage.
Remedy as necessary.

Other information:
- To access the central electronic module (CEM) connector, see Central electronic module (CEM), replacing Central Electronic Module (CEM), Replacing
- To access the immobilizer antenna unit/connector, see Antenna unit immobilizer, replacing Service and Repair
- To connect the breakout box, see Connecting the breakout box Connecting the Breakout Box, Central Electronic Module (CEM)
- For information about signals, see Signal specification Pinout Values and Diagnostic Parameters
- Checking wiring and terminals Checking Wiring And Terminals.













Is the signal cable OK?

Yes - Replacing the component

No - Verification

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Replacing the component
Replace the central electronic module (CEM).
The immobilizer function is included in the central electronic module (CEM) but cannot be replaced separately.

Other information
- To replace the central electronic module (CEM), see Central electronic module (CEM), replacing Central Electronic Module (CEM), Replacing.


Continue - Verification

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Verification




Verification

Verification

Hint: After the repair it is necessary to check that the fault has been rectified.








- Ignition off.
- Connect connectors, install components, etc.
- Start the engine.
Check that diagnostic trouble code status changes from permanent to intermittent.





Is the diagnostic trouble code status intermittent?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFIED - Fault Found

VERIFICATION FAILED - 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 - FAULT-TRACING FAILED

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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