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Home >> Volvo >> 2012 >> C70 >> Repair and Diagnosis (Single Page) >> Body & Frame >> Towing Systems >> Trailer Module (TRM) - Diagnostic Trouble Codes >> TRM-1A03: Control Module. Internal Fault (2006-2013) >> Internal Fault >> Verification

Internal Fault: 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?