Checking The Unlocking Relay Circuit

Remove the unlocking relay (2/59 (RMI 21)).

Check the cable between terminal #2 the cable and connector and terminal #3 on the relay base. Check for an open-circuit.

Remedy as necessary.

If no fault is detected, measure the resistance between terminal #4 in the relay base and ground.

The ohmmeter should read 0 ohm.

If the resistance is incorrect, replace the rear electronic module (REM).

Other information 

• To access and replace the rear electronic module (REM), see RELAY/FUSE BOX CARGO COMPARTMENT/REAR ELECTRONIC MODULE (REM), REPLACING
• To access the lock unit, see ELECTRIC MOTOR, SUN ROOF, REPLACING
• see CHECKING WIRING AND TERMINALS .

Fig 1: Identifying Connector Terminals

Courtesy of VOLVO CARS CORPORATION

Fig 2: Identifying Ohmmeter

Courtesy of VOLVO CARS CORPORATION

Fig 3: Identifying Relays

Courtesy of VOLVO CARS CORPORATION