Signal Too High. Intermittent Fault

Signal too high. Intermittent fault

Checking the connectors
Check the central electronic module (CEM) connector for contact resistance and oxidation and remedy according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults and loose connections according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Check for damage carefully.

Hint: If the fault cause is found, reinstall the components, connectors etc.
If the fault cause is not found, do not reinstall the central electronic module (CEM) before continuing with fault-tracing.

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





Was a fault detected?

Yes - DONE

No - Checking wiring

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Checking wiring
Check the cable between central electronic module (CEM) connector #3B and ignition switch connector 15A #1 for an intermittent open-circuit according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults and for a short-circuit to supply voltage according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.

Other information
- The voltage must be 0 V if the key is in position 0 or I.
- To access / replace the central electronic module (CEM) connector, see Central electronic module (CEM), replacing Central Electronic Module (CEM), Replacing
- For the intermediate junction point, see the relevant wiring diagram.
- To connect the breakout box, see Connecting the breakout box Connecting the Breakout Box, Central Electronic Module (CEM)
- For further information about signals and other values, see Signal specification Pinout Values and Diagnostic Parameters














Continue - DONE

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