Replacing the relay

Fig 1: Identifying Ignition ON

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Ignition off
• Replace relay 2/158
• Ignition on.

  Activate the relay.

  If the function is now OK, the cause of the fault was a defective relay (short-circuit to ground or an open-circuit in the relay coil).

  Fig 2: Identifying VCT2000 Diagnostic Tool Symbol In VIDA

  Courtesy of VOLVO CARS OF NORTH AMERICA.
  Fig 3: Identifying Relays

  Courtesy of VOLVO CARS OF NORTH AMERICA.

Was the function OK? 

• YES 

  OKAY:  Troubleshooting has been completed.

• NO 

  Refer to Checking the control module for open-circuits