Checking the components

Fig 1: Identifying Ignition ON

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Ignition on.

  Activate buttons and read status on audio/telephone switch unit buttons.

  If read-out gave a correct result the fault is not in the SWM unit.

  Fig 2: Identifying VCT2000 Diagnostic Tool Symbol In VIDA

  Courtesy of VOLVO CARS OF NORTH AMERICA.

Did read-out of status on audio/telephone switch unit give a correct result? 

• YES 

  FAULT NOT FOUND:  Troubleshooting has been completed.

• NO 

  Refer to Vehicle equipment