Removal
- Disconnect the cable from the negative battery terminal.
- Remove the upper engine cover.
- Remove the center beam.
- Remove the bolts, disconnect the connectors and remove the radiator fan unit.
- Remove the bolts and remove the radiator fan motor.
- Loosen the nut and remove the radiator fan impeller.
Examination
- Check the radiator fan blades for damage or cracks.
- Radiator Fan Motor
- Make sure that the radiator fan rotates when voltage is applied to the fan motor connector contacts (Fig. 5.28).
- Make sure the fan does not make noise when rotating.
Fig. 5.28. Checking the radiator fan motor
Checking the relay
- Check for conductivity between the fan relay contacts (Fig. 5.29).
Fig. 5.29. Checking the radiator fan motor relay of the diesel engine F9Q1
1. When voltage is applied from the battery terminals to contacts 1 and 3 of the relay, there should be conductivity between contacts 4 and 5.
2. When the voltage is disconnected from contacts 2 and 3 of the relay, there should be no conductivity between contacts 4 and 5.