Cooling Fan Control Inspection

Condenser fan relay
1. Verify that A/C switch and fan switch are OFF.
2. Start the engine and let it idle.
3. Verify that the condenser fan is not operating.

4. If condenser fan is operating, check:
- Condenser fan relay for stuck in closed position.
- Short to power in circuit between condenser fan relay and condenser fan.
- Short to ground in circuit between A/C pressure switches and PCM.
- Short to ground circuit between condenser fan relay and PCM terminal 17 (short circuit).

5. Turn the A/C switch and fan switch ON.
6. Verify that the condenser fan is operating and operating sound of A/C compressor magnetic clutch is heard.
7. Turn the A/C switch and fan switch OFF.

8. If the condenser fan does not operate but operating sound of A/C compressor magnetic clutch is heard, check as follows:
- Open circuit between ignition switch and condenser fan relay.
- Open circuit between battery and condenser fan relay.
- Open circuit between condenser fan relay and PCM.
- Open circuit between condenser fan relay and condenser fan motor or fan motor ground.
- Condenser fan relay stuck to open. e Condenser fan motor.




9. If both condenser fan and A/C compressor do not operate, check:
- TP V PID.
- A/C system.