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Home >> Volvo >> 2004 >> S80 Base, 2.5 59, FWD >> Repair and Diagnosis >> Electrical >> Gauges >> Audio Module (AUM) & Phone Module (PHM) Diagnostic Trouble Codes >> PHM-0001: Power Supply. Faulty Signal. Permanent Fault (USA/CDN) (2001-2004) >> Faulty signal. Permanent fault >> Checking power supply >> Checking fuses

Checking fuses

Check that carphone fuse #29 in the passenger compartment fusebox is not half burned by trying a new fuse.

HINT: After market carphone installations without VolvoOnCall are supplied with voltage through the radio fuses, #15 and #16 in the passenger compartment fusebox. 

HINT: After market carphone installations with VolvoOnCall are supplied with voltage through fuse #29. 

Other information: 

If the carphone is now OK, the fault was due to a bad fuse.

Is the carphone OK?