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Home >> Volvo >> 2013 >> XC90 Base, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Entertainment Systems >> Antenna Module (ATM), Phone Module (PHM) And Subwoofer Module (Sub) Diagnostic Trouble Codes >> PHM-006A: Communication Problems Most. Internal Fault (2003-2005) >> Internal Fault >> Fault-Tracing Most

Fault-Tracing Most

If other control modules on the MOST network are not working, MOST communication is not possible. The fault may be an open-circuit on the MOST cable or because a control module is not working. The phone module (PHM) can only diagnose that it is unable to communicate on the MOST network, but not where the fault is. Continue the fault-tracing therefore by reading off diagnostic trouble codes (DTCs) from the infotainment control module (ICM) and then following the relevant fault-tracing procedures.

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