Radiator Cooling Fan: Testing and Inspection

INSPECTION

Operating condition:
Radiator fan operates depending on the radiator fan speed related to engine coolant temperature or the radiator fan speed related to A/C compressor load, whichever is higher as a load condition.
^ Radiator fan speed related to engine coolant temperature





^ Radiator fan speed related to A/C compressor load





DIAGNOSIS:
Radiator main and sub fans do not rotate under the above conditions.