Signal Too High

Signal too high

Checking the connectors




- Ignition off.
Check central electronic module (CEM) connector D. Check for contact resistance and oxidation. Remedy as necessary.
Check for any damage.

Hint: If the fault cause is found, reinstall the components, connectors etc.
If the fault cause was not found, do not reconnect the connector before carrying out further fault-tracing.

Other information:
- To replace the connectors for the central electronic module (CEM), see: Central electronic module (CEM), replacing Replacing Central Electronic Module (CEM)
- Checking wiring and terminals Checking Wiring And Terminals

Was a fault detected?

Yes - Verification

No - Checking the component and cable

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Checking the component and cable




- Ignition off.
Check the cable between central electronic module (CEM) connector terminal #D60 and ignition switch connector terminal #7. Check for a short-circuit to supply voltage.
The voltage must be 0 V if the key is in position 0, I or II.

Other information:
- Connecting the breakout box Connecting The Breakout Box, Central Electronic Module (CEM)
- Signal specification Signal Description, Central Electronic Module (CEM)
- Central electronic module (CEM), replacing Replacing Central Electronic Module (CEM)
- Checking wiring and terminals Checking Wiring And Terminals









Were any faults found in the cable?

Yes - Verification

No - Replacing the component

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Replacing the component
To replace the connector for the ignition switch, see: Steering wheel lock, replacing Service and Repair

Continue - Verification

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Verification





Verification

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








- Ignition off.
- Reinstall the connectors, components etc.
- Turn the ignition key to position I.





Is the voltage OK?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFICATION FAILED - Fault-tracing information

VERIFIED - FAULT FOUND

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Fault-tracing information

FAULT-TRACING FAILED - No Fault Found

Attempt New Test - Checking the connectors

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