Checking the wiring and switches

Check the switches at the central electronic module and lock unit. Check for contact resistance and oxidation.

Check the signal cable for the lock position sensor between the central electronic module connector terminal #C3 and lock module connector terminal #5. Check for an open-circuit.

Check the signal cable for the lock position sensor between the central electronic module connector terminal #C3 and lock unit connector terminal #5. Check for an intermittent short-circuit to supply voltage.

Other information: 

• To access and replace the lock module, see Driver's door module / passenger door module (DDM/PDM), replacing
• For information on the central electronic module connectors, see Central electronic module (CEM), replacing
• To connect the breakout box, see Connecting the breakout box
• For further information about signals and other values, see Signal specification
• See Inspect terminals visually .

Fig 1: Breakout Box

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying VCT2000 Diagnostic Tool Symbol In VIDA

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 3: Identifying Connector Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.

Were any diagnostic trouble codes (DTCs) stored? 

• YES 

  OKAY:  Troubleshooting has been completed.

• NO 

  Refer to Checking the door locking function