COOLING FAN SYSTEM ON-VEHICLE INSPECTION


  1. INSPECT COOLING FAN OPERATION WITH LOW TEMPERATURE (Below 83°C (181°F))


    1. Turn the ignition switch on.

    2. Check that the cooling fan stops.


      • If not, check the cooling fan relay and engine coolant temperature sensor, and check if there is a disconnection or circuit open between them.

    3. Disconnect the engine coolant temperature sensor connector.

    4. Check that the cooling fan rotates.


      • If not, check the fuses, cooling fan relay, ECM and cooling fan, and check for a short in the circuit between the cooing fan relay and engine coolant temperature sensor.

    5. Reconnect the engine coolant temperature sensor connector.

  2. INSPECT COOLING FAN OPERATION WITH HIGH TEMPERATURE (Above 93°C (199°F))


    1. Start the engine, and raise the engine coolant temperature to above 93°C (199°F).

      Tech Tips

      Engine coolant temperature is detected by the engine coolant temperature sensor on the water outlet.

    2. Check the engine coolant temperature sensor.

  3. INSPECT COOLING FAN MOTOR


    1. Disconnect the cooling fan motor connector.

    2. Connect the cooling fan connector to the battery and check that the fan motor moves smoothly.

    3. A0137D6

      Using an ammeter, measure the current between the terminals.

      Standard current
      Specification Condition Specified condition
      except Tropic Spec w/o air conditioning 12V 2.5 to 4.5 A
      w/ air conditioning 12V 7.5 to 9.3 A
      for Tropic Spec w/o air conditioning 12V 10.2 to 14.4 A
      w/ air conditioning 12V 7.5 to 9.3 A

    4. Connect the cooling fan motor connector.