Radiator Cooling Fan: Testing and Inspection
Radiator Fan SystemWIRING DIAGRAM
RADIATOR FAN CONTROL OUTPUT WAVEFORM
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.
