Checking contact resistance, oxidation and wiring

Repair or replace the connectors of the audio module (AUM) and antenna amplifier, checking for contact resistance and oxidation:

See Contact resistance and oxidation 

Check the cables between the sub-antenna and control module connector terminal #C2 for open circuit:

See Open-circuit, intermittent faults 

Remedy as necessary.

Other information: 

• See Radio/carphone, replacing (-2004)  or Audio unit, replacing (2005-) 
• To access/replace the sub-antenna:

  See Antenna bumper rear, replacing 

• See Connecting the breakout box, Audio control module 
• For information on signals and connectors:

  See Signal specification, audio control module 

Fig 1: Breakout Box

Courtesy of VOLVO CARS OF NORTH AMERICA.

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  OKAY:  Troubleshooting has been completed.