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Home >> Volvo >> 2006 >> S80 FWD >> Repair and Diagnosis (Single Page) >> Electrical >> Gauges >> Audio Module (AUM) & Phone Module (PHM) Diagnostic Trouble Codes >> PHM-0004: Communication With Control Module. Signal Too Low. Permanent Fault (1999-2000) >> Signal too low. Permanent fault >> Verification >> Verification
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Signal too low. Permanent 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 OF NORTH AMERICA.
Fig 2: Identifying Connector(s) Reinstallation
GLL101069Courtesy of VOLVO CARS OF NORTH AMERICA.

Has the diagnostic trouble code (DTC) status changed?