Checking the component

Fig 1: Checking Traffic Load On CAN Cables

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Ignition on.

  The climate control module (CCM) has registered that one or more damper motor modules (DMM) have an incorrect number of steps between the end positions during damper regulation.

  Check which damper motor has an incorrect number of steps between the end positions by:

  • Read out the actual range to identify the number of stages between the upper and lower end positions measured by the damper motor module (DMM).
  • Read out the preset range to identify the number of stages between the upper and lower end positions stored by the damper motor module (DMM).
  • Compare these values to check the tolerances.

  The defective damper motor has been identified if the actual range of any of the damper motors is outside the preset range by more than the tolerance.

  Check that the damper motor is correctly installed.

  Check that the damper is not blocked and that is has not become stuck. Look, for example, for a screw, cable or foam rubber gasket.

  Other information: 

  • See Climate control, location of components
  • See Damper motor temperature, replacing
  • See Damper motor, defroster, replacing
  • See Damper motor, recirculation, replacing
  • See Damper motor module (DMM) air distribution, replacing
  Fig 2: Identifying VCT2000 Diagnostic Tool Symbol In VIDA

  Courtesy of VOLVO CARS OF NORTH AMERICA.

• Continue 

  Refer to Calibration 

Click on the VCT2000 symbol.

There is an internal fault if the damper motor range shows 0 or 4095. Replace the Damper motor module (DMM).

Fig 1: Identifying VCT2000 Diagnostic Tool Symbol In VIDA

Courtesy of VOLVO CARS OF NORTH AMERICA.

Does the damper motor range show 0 or 4095? 

• YES 

  Refer to Replacing the control module 

• NO 

  Refer to Checking the component 

Check that the throttle in the throttle module can be closed and opened completely without binding. Check that the damper is not blocked and that is has not become stuck.

Other information: 

• See Climate control, location of components

• Continue 

  Refer to Calibration 

Fig 1: Checking Traffic Load On CAN Cables

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Ignition on.

  The climate control module (CCM) has registered that one or more damper motor modules (DMM) have an incorrect number of steps between the end positions during damper regulation.

  Check which damper motor has an incorrect number of steps between the end positions by:

  • Read out the actual range to identify the number of stages between the upper and lower end positions measured by the damper motor module (DMM).
  • Read out the preset range to identify the number of stages between the upper and lower end positions stored by the damper motor module (DMM).
  • Compare these values to check the tolerances.

  The defective damper motor has been identified if the actual range of any of the damper motors is outside the preset range by more than the tolerance.

  Check that the damper motor is correctly installed.

  Check that the damper is not blocked and that is has not become stuck. Look, for example, for a screw, cable or foam rubber gasket.

  Other information: 

  • See Climate control, location of components
  • See Damper motor temperature, replacing
  • See Damper motor, defroster, replacing
  • See Damper motor, recirculation, replacing
  • See Damper motor module (DMM) air distribution, replacing
  Fig 2: Identifying VCT2000 Diagnostic Tool Symbol In VIDA

  Courtesy of VOLVO CARS OF NORTH AMERICA.

• Continue 

  Refer to Calibration 

Click on the VCT2000 symbol.

There is an internal fault if the damper motor range shows 0 or 4095. Replace the Damper motor module (DMM).

Fig 1: Identifying VCT2000 Diagnostic Tool Symbol In VIDA

Courtesy of VOLVO CARS OF NORTH AMERICA.

Does the damper motor range show 0 or 4095? 

• YES 

  Refer to Replacing the control module 

• NO 

  Refer to Checking the component