ВЕНТИЛЯТОР СИСТЕМЫ ОХЛАЖДЕНИЯ ПРОВЕРКА БЕЗ СНЯТИЯ С АВТОМОБИЛЯ

Tech Tips

It is normal for the cooling fan to sometimes rotate when the ignition switch is turned to ON.


  1. INSPECT COOLING FAN OPERATION AT LOW TEMPERATURES (Below 94°C (201°F))


    1. Turn the ignition switch to ON.

    2. w/ Air Conditioning System:

      Check that the A/C switch is off.

    3. Check that the cooling fan stops.

      If it does not, check the cooling fan relays and engine coolant temperature sensor, and then check for disconnection of the connector or a wire break between the cooling fan relay and engine coolant temperature sensor.

    4. Disconnect the engine coolant temperature sensor connector.

    5. Check that the cooling fan rotates.

      If it does not, check the fuses, cooling fan relays, ECM and cooling fan, and then check for an open circuit in the cooling fan relay.

    6. Reconnect the engine coolant temperature sensor connector.

  2. INSPECT COOLING FAN OPERATION AT HIGH TEMPERATURES (96°C (205°F) or Higher)


    1. Start the engine, and then raise the coolant temperature to 96°C (205°F) or higher.

      Tech Tips

      Coolant temperature is the value detected by the engine coolant temperature sensor on the cylinder head.

    2. w/ Air Conditioning System:

      Check that the A/C switch is off.

    3. Check that the cooling fan rotates.

      If it does not, check the fuses, engine coolant temperature sensor, cooling fan, harness or connector.