Checking components and wiring

Check that main fuse (11A/2) in the relay / fusebox in the engine compartment is intact.

Check that fuse (11C/34) in the integrated relay / fusebox in the passenger compartment is intact.

Check the cable between sun roof module (SRM) terminal #1 and the battery. Check for a short-circuit to ground. Check for an open-circuit.

Check the cable between sun roof control module terminal #10 and ground: Check the left A-post. Check for a short-circuit to ground. Check for an open-circuit.

The upper electronic module (UEM) and sun roof module (SRM)

Check the cable between upper electronic module (UEM) terminal #8 and sun roof module (SRM) terminal #6. Check for a short-circuit to ground.

Sun roof control module and roof lamp module

Check the cable between the sun roof module (SRM) terminal #2 and the roof lamp module terminal #4B. Check for a short-circuit to supply voltage.

Check the cable between the sun roof module (SRM) terminal #8 and the roof lamp module terminal #3B. Check for a short-circuit to supply voltage.

Check the cable between sun roof module (SRM) terminal #8 and roof lamp module terminal #3B. Check for an open-circuit.

Check the cable between sun roof module (SRM) terminal #2 and roof lamp module terminal #4B. Check for an open-circuit.

Check the cable between sun roof module (SRM) terminal #3 and roof lamp module terminal #2B. Check for an open-circuit.

Check the cable between sun roof module (SRM) terminal #7 and roof lamp module terminal #1B. Check for an open-circuit.

Check the cable between the sun roof module (SRM) terminal #9 and the roof lamp module terminal #9A. Check for an open-circuit. Check for a short-circuit to ground.

Sun roof switch and roof lamp module

Check the wiring between sun roof switch and roof lamp module (RCM). Check for an open-circuit. Check for a short-circuit to supply voltage.

Remedy as necessary.

Other information

For further information about signals and other values, see Signal specification
To connect the breakout box, see Connecting the breakout box
To replace the switch for the sun roof, see Switch, sun roof, replacing
To access the roof lamp module connector, see Interior lighting and upper electronic module (UEM), replacing
To access the sun roof control module, see Control module, sun roof, replacing
With the ignition off, the voltage between control module terminal #1 and ground should be battery voltage
See Checking wiring and terminals .

Fig 1: Identifying Connector Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Ohmmeter

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 3: Identifying Sunroof Module Connector Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.

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Refer to Checking components