Checking Relay Power Supply

Remove the locking relay (2/58 (RMI 20)).

Measure the voltage between terminal #5 in the relay base and ground.

The voltmeter should read battery voltage.

HINT: If the value is OK but the fault remains, connect the connector to the lock module between terminals #3 and #5 in the relay base to force a supply to the locking motor when continuing to take measurements. 

Other information 

• To access the rear electronic module (REM), see RELAY/FUSE BOX CARGO COMPARTMENT/REAR ELECTRONIC MODULE (REM), REPLACING .

Fig 1: Identifying Voltage Display

Courtesy of VOLVO CARS CORPORATION

Fig 2: Identifying Relays

Courtesy of VOLVO CARS CORPORATION

Does the voltmeter read battery voltage? 

• YES 

  OKAY:  Troubleshooting has been completed.

• NO 

  Refer to CHECKING FUSES