Control Module HVAC: Testing and Inspection
A/C Control System InspectionWARNING: Keep hands, tools, and clothing away from A/C condenser fan to help prevent personal injury. This fan is electric and can come on whether or not the engine is running. The fan can start automatically in response to the ECT sensor with the ignition switch in the ON position.
Check condenser fan control system for operation referring to A/C Condenser Fan Control System Inspection. If A/C system fails to operate properly, check relay, A/C condenser fan and electrical circuit.
Refer to Compressor Relay and Condenser Cooling Fan Relay Inspection:Manual Type and Condenser Cooling Fan Inspection:Manual Type.