Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information TRM-U300362

Condition

Note! This trouble code is only relevant for troubleshooting and action in the following cases:

- The trouble code is active in the present driving cycle and has been active for a longer period of time.
- The customer experiences malfunction that can be attributed to the trouble code.
The Trailer module (TRM) checks its own system voltage by comparing the direct voltage with the system voltage in Central electronic module (CEM). The information about the system voltage in Central electronic module (CEM) is sent via CAN to Trailer module (TRM).
The diagnostic trouble code (DTC) is stored if the control module detects that:
- The system voltage differs by more than 2.0 V.
- Incorrect value runs longer than 1 second.
The control module's test for the diagnostic trouble code (DTC) starts in the event of:
- Starting the control module's CAN communication.

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
- Short-circuit to ground in the power supply cable.
- Contact resistance or oxidation in the terminals.
- Damaged generator (GEN).
- Damaged battery.

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