Checking the connectors

Fig 1: Identifying Ignition Off Position

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Ignition off.

  Check the upper electronic module (UEM), sun roof module (SRM) and wiring connectors (54/3R and 54/13). Check for contact resistance and oxidation. Check for loose connections.

  Check for damage carefully.

  Reinstall the components, reconnect the connectors etc.

  Ignition on.

  Operate the sun roof.

  Other information 

  • To access the upper electronic module (UEM), see Upper electronic module (UEM) rear view / door mirror, replacing
  • To access the sun roof connector, see Sun roof module (SRM), replacing
  • Checking wiring and terminals .
  Fig 2: Identifying Ohmmeter

  Courtesy of VOLVO CARS OF NORTH AMERICA.

Do the sun roof controls operate? 

• YES 

  OKAY:  Troubleshooting has been completed.

• NO 

  Refer to Checking components and wiring