Short-Circuit To Ground

Short-circuit to ground

Checking the wiring








- Ignition off
- Disconnect central electronic module (CEM) connector D.
Check the signal cable. Check for a short-circuit to ground. Take readings between central electronic module (CEM) terminal #D29 (#29) and twilight sensor terminal #4.
For further information, see the wiring diagram.
Try a new twilight sensor if no fault was found.
Remedy as necessary.

Other information
- Connecting the breakout box Connecting The Breakout Box, Central Electronic Module (CEM)
- Signal specification Signal Description, Central Electronic Module (CEM)
- Location of components Locations
- Sun sensor / alarm LED, replacing Service and Repair
- Checking wiring and terminals Checking Wiring And Terminals

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.
- Ignition on.
Read off the voltage level at the twilight sensor by clicking the VCT2000 symbol.
Check that the value is between 2 and 4.8 V.





Is the value OK?

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 - Exit fault-tracing

No - Attempt New Test

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Attempt New Test - Checking the wiring

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