Disconnect the fan motor from the power supply and use a multimeter to test for continuity between the positive and negative terminals. If there is no continuity, the fan motor is faulty and needs to be replaced.
2.Check the fan relay
Remove the fan relay from its socket and inspect it for damage. If the relay is damaged, replace it with a new one.
3.Check the wiring.
Inspect the wiring between the fan motor, fan relay, and fuse box for any damage or loose connections. Repair or replace any damaged wiring as necessary.
4.Check the coolant temperature sensor.
The coolant temperature sensor may be faulty sending incorrect temperature signals to the ECU, preventing the fans from turning on.
Replace the coolant temperature sensor and bleed the cooling system.
5.Check the PCM
The PCM may be faulty and not sending the correct signal to the fan relay. Have the PCM tested by a qualified mechanic.
