Signal Too High. Intermittent Fault.

Signal too high. Intermittent fault.

Check the connector
Check central electronic module (CEM) connector for contact resistance and oxidation as described in Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults , and for a loose contact as described in Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Check especially for any damage.

Hint: If cause of fault is found, then install components, connect connector etc.
If cause of fault is not found do not install central electronic module (CEM) until you have completed the trouble-shooting.

Additional information:
- To access central electronic module (CEM) connector, see Central electronic module (CEM), replacing Central Electronic Module (CEM), Replacing.





Is there a fault?

Yes - DONE

No - Checking the wiring

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Checking the wiring
Check the wire between central electronic module (CEM) #2B and ignition lock connector #x (#6) for an intermittent open circuit as described in Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults , and for a short circuit to voltage supply as described in Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.

Additional information
- The voltage should be 0 V with the key in position 0 and III.
- To access/replace the CEM connector, see Central electronic module (CEM), replacing Central Electronic Module (CEM), Replacing
- To connect a test box, see Connecting the breakout box Connecting the Breakout Box, Central Electronic Module (CEM)
- For information about signals and other values, see Signal specification Signal Specification













Continue - DONE

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