Cooling Fan Control Inspection

Cooling Fan Operation:

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.
- If the condenser fan is operating, inspect for the following:
- Condenser fan relay for being stuck in closed position.
- Short to power in circuit between condenser fan relay and condenser fan
- Short to GND in circuit between refrigerant pressure switch and PCM terminal 41
- Short to GND circuit between condenser fan relay and PCM terminal 45

4. Turn the A/C switch and fan switch on.
5. Verify that the condenser fan is operating and operation sound of A/C compressor magnetic clutch is heard.
6. Turn the A/C switch and fan switch off.
- If the condenser fan does not operate but operation sound of A/C compressor magnetic clutch is heard, inspect for the following:
- Open circuit between ignition key and condenser fan relay
- Open circuit between battery and condenser fan relay
- Open circuit between condenser fan relay and PCM terminal 45
- Open circuit between condenser fan relay and condenser fan motor or fan motor GND
- Condenser fan relay is stuck open.
- Condenser fan motor.

- If both condenser fan and A/C compressor do not operate, inspect the following:
- GTP V PID
- A/C system