Diesel Data: Automotive Repair

Radiator Cooling Fan Motor: Testing and Inspection

On-Vehicle Inspection





1. Check continuity between each terminals. If there is no continuity, replace radiator fan motor.





2. Connect battery to radiator fan motor coupler as shown in figure, then check that the radiator fan motor operates smoothly, fan speed varies and that specified current. If radiator fan motor does not operate smoothly, replace motor.
Radiator cooling fan motor specified current at 12 V
LOW: 10 A maximum
HIGH: 15 A maximum