Checking relay power supply

Remove the relay for locking 2/67 (RMI 20) from the integrated relay / fusebox in the cargo compartment.

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 integrated relay / fusebox in the cargo compartment, see Integrated relay/fuse box cargo compartment/rear electronic module, replacing .

Fig 1: Identifying Voltage Display

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Relays And Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.

Does the voltmeter read battery voltage? 

• YES 

  OKAY:  Troubleshooting has been completed.

• NO 

  Refer to Checking for an open-circuit