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Home >> Volvo >> 2006 >> V50 Base, 2.4 38 >> Repair and Diagnosis >> Body & Frame >> Towing Systems >> Trailer Module (TRM) Diagnostic Trouble Codes >> TRM-1A04: Control Module. Internal Fault (2005-2011) >> Internal Fault >> Verification >> Verification
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Internal Fault: Verification: Verification

HINT: After carrying out the repair check that the fault has been remedied. 

Fig 1: Identifying Ignition ON
GLL101051Courtesy of VOLVO CARS CORPORATION
Fig 2: Connecting Battery Negative Lead
GLL118765Courtesy of VOLVO CARS CORPORATION

Is the fault intermittent?