Checking Communication

Fig 1: Identifying Ignition ON

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Ignition on.

  Check that communication with humidity sensor (HUS) works, by reading out the value in question.

  Click the symbol for VCT2000 to begin reading off.

  Fig 2: Identifying VCT2000 Diagnostic Tool Symbol In VIDA

  Courtesy of VOLVO CARS OF NORTH AMERICA.

Does the sensor respond? 

• YES 

  OKAY:  Troubleshooting has been completed.

• NO 

  Refer to REPLACING THE CONTROL MODULE