Diagnostic Trouble Code (DTC) Information CEM-De49
Condition
The diagnostic trouble code (DTC) is stored if the central electronic module (CEM) registers that communication with the steering wheel module (SWM) is not operating.
NOTE:
In the event of CEM-DEXX diagnostic trouble codes (DTCs) being stored the central electronic module (CEM) must not be replaced; the diagnostic trouble code (DTC) indicates a communication fault in the Control area network
The diagnostic trouble code (DTC) can be diagnosed when the ignition has been on for at least 10 seconds.
Substitute Value
- None.
Possible Source
- No power supply to the steering wheel module (SWM)
- Open-circuit in the ground lead to the steering wheel module (SWM)
- Contact resistance in the terminals
- Open-circuit in the wiring for the CAN low speed network to the steering wheel module (SWM)
- The steering wheel module (SWM) is not intended for this car for example a used control module with different software/hardware).
Fault symptom[s]
- Cruise control does not work at all
- Windshield wipers only operate at lowest speed
- The turn signal lamps are not operating
- Buttons on the steering wheel are not working.