Checking the cable between the brake valve/clutch valve and the control module

Fig 1: Identifying Ignition OFF

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Disconnecting Connector

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Fig 3: Disconnecting Control Unit

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Ignition off.
• Control module disconnected.
• Disconnect the brake valve.
• Clutch valve connected (manual transmissions).

  Connect an ohmmeter between control module connector terminal #3 and brake valve connector terminal #2. Cars with manual transmissions: the ohmmeter must be connected to clutch valve terminal #2.

  Fig 4: Identifying Control Module 14-Pin Connector And Brake Valve 2-Pin Connector

  Courtesy of VOLVO CARS OF NORTH AMERICA.
  Fig 5: Identifying Ohmmeter

  Courtesy of VOLVO CARS OF NORTH AMERICA.

The ohmmeter should read approximately 0 Ω. 

• OK 

  Refer to Checking the control module connectors 

• NOT OK 

  Refer to Checking for an open-circuit