Checking the Cable

Check the wiring between the sun roof switch and the roof lamp module. Check for a short-circuit to supply voltage.

If a fault is found replace the wiring.

Other information: 

• For further information about signals and other values, see Signal Specification
• See Checking Wiring And Terminals .

Fig 1: Identifying Voltage Display

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Roof Lamp Module

Courtesy of VOLVO CARS OF NORTH AMERICA.

Has a fault been detected? 

• YES 

  Refer to Verification 

• NO 

  Refer to Replacing the Control Module