Circuit test

The fault is caused by an open-circuit in the cable to (or in) the lock unit. To determine in which circuit the fault is:

Remove the deadlock relay (2/115).

Remove the lock unit connector. Check the connector for contact resistance and oxidation.

Other information 

• To expose the integrated relay / fusebox in the cargo compartment, see Relay/fuse box cargo compartment/Rear electronic module (REM), replacing
• To expose the lock unit, see Lock mechanism, tailgate, replacing
• Checking wiring and terminals .

Fig 1: Identifying Ohmmeter

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Relays

Courtesy of VOLVO CARS OF NORTH AMERICA.

Was a fault detected? 

• YES 

  OKAY:  Troubleshooting has been completed.

• NO 

  Refer to Circuit test (cont.) 

The fault indicates an open-circuit in the common relay circuit (relay 2/115 or the power supply to the relay).

Begin by replacing the relay for deadlocking (2/115) in the integrated relay / fusebox in the cargo compartment. Check the relay base switches. Check for contact resistance and oxidation.

Other information 

• To expose the integrated relay / fusebox in the cargo compartment, see Relay/fuse box cargo compartment/Rear electronic module (REM), replacing
• Checking wiring and terminals .

Fig 1: Identifying Ohmmeter

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Relays

Courtesy of VOLVO CARS OF NORTH AMERICA.

Was a fault detected? 

• YES 

  OKAY:  Troubleshooting has been completed.

• NO 

  Refer to Checking relay power supply