Checking for contact resistance, oxidation and checking 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: 

• For -2004, see:Radio cassette player, replacing .
• For 2005-, see:Audio unit, replacing .
• To access/replace the sub-antenna:

  See Sub-antenna in bumper / amplifier

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

  See The audio control module, green connector

  See Audio control module (to aerial)

Fig 1: Identifying Breakout Box

Courtesy of VOLVO CARS OF NORTH AMERICA.