Checking For Open-Circuits And Short-Circuits

Check the cable between the upper electronic module (UEM) terminal #21 and the sun roof module (SRM) terminal #4. Check for a short-circuit to ground. 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 DESCRIPTION, UPPER ELECTRONIC MODULE (UEM)
• To connect the breakout box, see CONNECTING THE BREAKOUT BOX
• To access the sun roof control module, see CONTROL MODULE, SUN ROOF, REPLACING
• see CHECKING WIRING AND TERMINALS .

Fig 1: Identifying Sunroof Module Connector Terminals

Courtesy of VOLVO CARS CORPORATION

Fig 2: Identifying Ohms Display

Courtesy of VOLVO CARS CORPORATION

Fig 3: Identifying Connector Terminals

Courtesy of VOLVO CARS CORPORATION

Was a fault detected? 

• YES 

  Refer to VERIFICATION 

• NO 

  FAULT NOT FOUND:  Troubleshooting has been completed.