Checking the cable between the central locking system control module and the SRS control module

Fig 1: Identifying Ignition OFF

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Disconnecting Connector

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Ignition off.
• Disconnect the control module.
  CAUTION: Avoid touching the control module terminal pins. There is a risk of static discharge which may damage the control module.

  Connect an ohmmeter between ground and SRS control module connector #40.

  Fig 3: Identifying Control Unit Connector Terminals

  Courtesy of VOLVO CARS OF NORTH AMERICA.
  Fig 4: Identifying Ohmmeter

  Courtesy of VOLVO CARS OF NORTH AMERICA.

The ohmmeter should read infinite resistance. 

• OK 

  Refer to Replacing the component 

• NOT OK 

  Refer to Replacing the component