Checking the power supply

Fig 1: Identifying Ignition ON

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Ignition on.

  Connect a voltmeter between turbocharger (TC) control valve connector terminal 1 (control module side) and the ground terminal.

  Fig 2: Identifying Injector Connector Terminals

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

  Courtesy of VOLVO CARS OF NORTH AMERICA.

The voltmeter should read battery voltage for 2 seconds immediately after the ignition is switched on. 

• OK 

  Refer to Checking the signal cable 

• NOT OK 

  Refer to Checking the signal cable