Checking For Permanent Or Intermittent Faults

Fig 1: Identifying Ignition ON

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Ignition on.

  Check that the sun roof can be operated automatically by pressing the switch 2 steps.

Can the sun roof be operated automatically? 

• YES 

  Refer to Intermittent Fault 

• NO 

  Refer to Checking For Open-Circuits And Short-Circuits