Checking The Connectors

Fig 1: Identifying Ignition ON

Courtesy of VOLVO CARS CORPORATION

Fig 2: Connecting Connector

Courtesy of VOLVO CARS CORPORATION

• Ignition off
• Check the electrical terminals on the combustion fan and the control module connector. Check for contact resistance and oxidation and remedy.

  Check for damage carefully

• Reinstall the components, reconnect the connectors etc.
• Ignition on
• Activate the combustion fan.

  Listen for a buzzing sound which indicates that the combustion fan is running.

  If the combustion fan now operates, the cause of the fault was loose connections in the connectors.

  Other information: 

  • To access the control module or connect the breakout box, see CONNECTING THE BREAKOUT BOX
  • To access the combustion fan, see FUEL INJECTION NOZZLE / FAN MOTOR / PRESSURE EQUALIZER, REPLACING
  • see CHECKING WIRING AND TERMINALS .
  Fig 3: Identifying VCT2000 Diagnostic Tool Symbol In VIDA

  Courtesy of VOLVO CARS CORPORATION

Does the combustion fan function? 

• YES 

  OKAY:  Troubleshooting has been completed.

• NO 

  Refer to CHECKING COMPONENTS AND WIRING