Diagnostic Trouble Code (DTC) Information CEM-De42
Condition
The diagnostic trouble code (DTC) is stored if the Central electronic module (CEM) registers that there is no communication with the Convertible Roof Module (CRM).
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 Convertible Roof Module (CRM).
- Open-circuit in the ground lead for the Convertible Roof Module (CRM).
- Contact resistance in the terminals.
- Open-circuit on the cables for LS-CAN to Convertible Roof Module (CRM).
- The Convertible Roof Module (CRM) is not intended for this vehicle, for example a control module with different software/hardware has been used.
Fault symptom[s]
- Lockable storage doesn't work
- Lockable storage doesn't work