Signal Too Low. Permanent Fault

Signal too low. Permanent fault

Checking the signal cable








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

Hint: The signal cable goes from the Central electronic module (CEM) to ground via glass breakage circuit right and glass breakage circuit left.

Check the signal cable. Check for a short-circuit to ground.
Begin by measuring at the grounding point and then go backward along the circuit to find the defect.
Remedy as necessary.

Other information:
- Connecting the breakout box Connecting the Breakout Box, Central Electronic Module (CEM)
- Signal specification Pinout Values and Diagnostic Parameters
- Central electronic module (CEM), replacing Central Electronic Module (CEM), Replacing
- See applicable wiring diagram
- Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault









Is the signal cable OK?

Yes - Fault-tracing information

No - Verification

-------------------------------------------------

Verification




Verification

Verification

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




- Ignition off.
- Reinstall the connectors, components etc.
- Shut all the doors. Activate the alarm.
- Deactivate alarm.
Check that the diagnostic trouble code (DTC) status displays Intermittent.





Does the diagnostic trouble code (DTC) status display Intermittent?

Yes - VERIFIED

No - VERIFICATION FAILED

------------------------

VERIFIED - Fault Found

VERIFICATION FAILED - Fault-tracing information

-------------------------------------------------

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

------------------------

FAULT-TRACING FAILED - No Fault Found

Attempt New Test - Checking the signal cable

-------------------------------------------------