Checking the control module

Check the relay coil driver circuit for an intermittent short-circuit to supply voltage by measuring the voltage between terminal #2 in the relay base and relay 2/111.

HINT: The voltage between terminal #2 and ground should be approximately 0 V. 

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.

Replace the control module if the voltmeter displays an incorrect value.

Other information: 

• To access and replace the integrated relay / fusebox in the cargo compartment, see Integrated relay/fuse box cargo compartment/rear electronic module, replacing
• See Checking wiring and terminals. Intermittent faults .

• Continue 

  Refer to Information