Clearing Trouble Codes - HVAC System - Automatic

Press the A/C mode button in order to clear codes from the heater-A/C control.

Any of the following components may cause malfunction in the temperature controls:
^ The refrigerant system
^ The electrical wiring connections
^ The vacuum connections
^ Faulty components that have mechanical problems, such as sticking valves

As a part of the diagnostic process inspect the following components:
^ The refrigerant, vacuum or mechanical systems. Refer to Vacuum Test.
^ The blower controls.
^ The compressor controls..
^ The air delivery controls.
^ The temperature controls. Refer to Electrical Diagnosis. Complete the diagnostic procedure for the heater A/C control microprocessor.