Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information TRM-U042268

Condition
The trailer module (TRM) is continuously supplied with necessary information from the central electronic module (CEM). The trailer module (TRM) checks the quality of the information that comes from the central electronic module (CEM).
The diagnostic trouble code (DTC) is stored if the control module detects that:
- The transmitting control module indicates a lower quality level of the information than what the Trailer module (TRM) accepts.
The control module's test for the diagnostic trouble code (DTC) starts in the event of:
- Control module supplied with power.

Note! The control module can only detect the fault once the test has been started and the diagnostic trouble code (DTC) is stored when the conditions are met.





Substitute value
- None.

Possible source
- Fault-trace the central electronic module (CEM).

Fault symptom[s]
- JV, Trailer lighting/Does not work