Checking unlocking signal from the central locking switch

Fig 1: Identifying Ignition ON

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Ignition on.

  Read off central locking switch status.

  Depress central locking switch to its unlocking position.

  The value should be LOW when the central locking switch is depressed to its unlocking position.

  NOTE: A diagnostic trouble code (DTC) is stored if the central locking switch is held in the locking position for more than 10 seconds.
  Fig 2: Identifying VCT2000 Diagnostic Tool Symbol In VIDA

  Courtesy of VOLVO CARS OF NORTH AMERICA.
  Fig 3: Identifying Central Locking Switch

  Courtesy of VOLVO CARS OF NORTH AMERICA.

Is the value OK? 

• OK 

  FAULT NOT FOUND:  Troubleshooting has been completed.

• NOT OK 

  Refer to Checking wiring and connectors