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
• see CHECKING WIRING AND TERMINALS .

Fig 1: Identifying Ohmmeter

Courtesy of VOLVO CARS CORPORATION

Fig 2: Identifying Relays

Courtesy of VOLVO CARS CORPORATION

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
• see CHECKING WIRING AND TERMINALS .

Fig 1: Identifying Ohmmeter

Courtesy of VOLVO CARS CORPORATION

Fig 2: Identifying Relays

Courtesy of VOLVO CARS CORPORATION

Was a fault detected? 

• YES 

  OKAY:  Troubleshooting has been completed.

• NO 

  Refer to CHECKING RELAY POWER SUPPLY