Faulty Signal

Faulty signal

Fault-tracing information
Check the cable between Central electronic module (CEM) terminal #H:17 and Mass movement sensor module (MMS) 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 take readings between Central electronic module (CEM) terminal #H:17 and Mass movement sensor module (MMS) 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 the Mass movement sensor module (MMS).
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 specification Signal Description, Central Electronic Module (CEM)
- Motion sensor rear Motion Sensor, Rear
- Motion sensor, front Motion Sensor, Front






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 - Fault-tracing information

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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.