Checking HVAC functions

• Ignition switch position II.

To check that identification and calibration rectified the fault, click VCT2000 and read out the expected and detected control modules/sensors. Check that all relevant units are present and that the customer symptoms that were present previously are now not present.

If a module is still missing, identify which one and replace it. After replacement, check whether the customer symptom remains.

If customer symptoms remain and all units are approved, continue with the next step of symptom fault-tracing.

Other information: 

• See Damper motor module (DMM) temperature, replacing
• See Damper motor module (DMM) defroster, replacing
• See Damper motor module (DMM) recirculation, replacing
• See Damper motor module (DMM) air distribution, replacing

Fig 1: Identifying VCT2000 Diagnostic Tool Symbol In VIDA

Courtesy of VOLVO CARS OF NORTH AMERICA.

Do you wish to continue with symptom fault tracing? 

• YES 

  Refer to Checking the damper motor control 

• NO 

  OKAY:  Troubleshooting has been completed.