Checking the function of the climate control module (CCM)

• Ignition on.

  Check the power supply to the control module by switching on the climate control module (CCM).

  The blower fan must blow and it must be possible to regulate the fan speed.

Does the blower fan start? 

• YES 

  Refer to Checking communication with the climate control module (CCM) 

• NO 

  Refer to Checking the power supply and ground for the climate control module (CCM) 

HINT: After carrying out the repair, check that the fault has been remedied. 

Fig 1: Identifying Ignition ON

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Fig 2: Identifying Connector(s) Reinstallation

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Ignition off
• Reconnect the connectors. Reinstall the components
• Ignition on.

  Check the power supply to the control module by switching on the climate control module (CCM).

  The blower fan must blow and it must be possible to regulate the fan speed.

Does the blower fan start? 

• YES 

  OKAY:  Troubleshooting has been completed.

• NO 

  Refer to Information