Faulty Signal

Faulty signal

Fault-tracing information
Check the cable between Central electronic module (CEM) terminal #H:17 and movement sensor (MMS) or (IMS) terminal #3.
- Connect the breakout box adapter to the central electronic module (CEM).
- Take readings between Central electronic module (CEM) terminal #H:17 (#31) and terminal #A:14 (#14). Also measure between Central electronic module (CEM) terminal #H:17 and movement sensor (MMS) or (IMS) terminal #3. Locate any short-circuits to voltage or ground. There should be no contact with power supply or ground.
If no fault is found on the cable, replace mass movement sensor (MMS) or (IMS).
Remedy as necessary.

Other information:
- Connecting the breakout box Connecting the Breakout Box, Central Electronic Module (CEM)
- Checking wiring and terminals Checking Wiring and Terminals
- Signal description Central Electronic Module (CEM) Signal Description, Central Electronic Module (CEM)
- Front intrusion sensor Removal and Replacement





Continue - Verification

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Verification




Check that the fault has been rectified by performing a new test for the DTC.
- Disconnect any battery chargers.
- Close doors, hood, and tailgate.
- Activate the alarm with the remote key.

Note! If the vehicle is equipped with a Keyless vehicle module (KVM), the remote key must be positioned approx. 10 meters away from the vehicle in order to activate the alarm.

- Read off the DTCs in VIDA and check that CEM-CFF0 has changed status to intermittent.





Is the status of the diagnostic trouble code (DTC) intermittent?

Yes - FAULT FOUND

No - Information

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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 - Fault-tracing information

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