Circuit test: Notes

The fault is caused by an open circuit in the wire to (or in) the lock unit. To find out which circuit contains the fault:

Remove the relay for locking to the deadlock position (2/115).

Remove lock unit connector and check for Contact resistance and oxidation .

Additional information 

• To access the relay/fuse box in the boot, see Integrated relay/fusebox cargo compartment/Rear electronic module (REM), replacing
• To access the lock unit, see Replacing the switch for the lock unit/cargo compartment lighting .

Fig 1: Identifying Ohmmeter

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Relays

Courtesy of VOLVO CARS OF NORTH AMERICA.

Is there a fault? 

• YES 

  OKAY:  Troubleshooting has been completed.

• NO 

  Refer to Circuit test, continued