Diagnostic Trouble Code (DTC) Information TRM-U300051

Condition

The trailer module (TRM) checks internal functions in the control module.

The diagnostic trouble code (DTC) is stored if the control module detects that:

Internal components do not work.
Incorrect value lasts longer than 15 seconds.

The control module's test for the diagnostic trouble code (DTC) starts in the event of:

Start-up of the control module.

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.

Fig 1: Identifying Control Module

Courtesy of VOLVO CARS CORPORATION

Substitute Value

None.

Possible Source

Incorrect software in Trailer module (TRM).

Fault symptom[s]

Faulty function on trailer lamps