Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information CEM-DF14

Condition




The central electronic module (CEM) checks the voltage in the CAN wiring in the high speed network. The diagnostic trouble code (DTC) is stored if the central electronic module (CEM) registers a short-circuit to ground in the CAN L in the high speed network.

Note! If DFxx diagnostic trouble codes (DTCs) are stored the central electronic module (CEM) must not be replaced as the diagnostic trouble code (DTC) indicates a short-circuit in one or more conductors in the Control area network. The central electronic module (CEM) is the only control module that monitors the voltage level in the Control area network wiring. The central electronic module (CEM) is therefore the only control module that can store a diagnostic trouble code (DTC) for a short-circuit in one of the cables to ground or supply voltage. Do not replace the central electronic module (CEM) in the event of a CAN fault unless VIDA fault-tracing has indicated that the central electronic module (CEM) has an internal fault.

The diagnostic trouble code (DTC) can be diagnosed when the ignition has been on for more than 10 seconds.

Substitute value
- None.

Possible source
- Short-circuit to ground in the high speed network.

Fault symptom[s]
- Radio interference.