Diagnostic Trouble Code (DTC) Information CEM-De45

Condition

Fig 1: Identifying Passenger Door Module (PDM)

Courtesy of VOLVO CARS OF NORTH AMERICA.

The diagnostic trouble code (DTC) is stored if the central electronic module (CEM) registers that communication with the passenger door module (PDM) 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

Limited functionality in the passenger door module (PDM) (Limp home).

Possible Source

Damaged fuse.
No power supply to passenger door module (PDM)
Open-circuit in the ground lead to the passenger door module (PDM)
Contact resistance in the terminals
Open-circuit in the wiring for the CAN low speed network to the passenger door module (PDM)
The passenger door module (PDM) is not intended for this car (for example a used control module with different software/hardware).

Fault symptom[s]

Cannot be controlled using the central locking switch
The passenger door switch panel does not work.