COOLING FAN SYSTEM INSPECTION


  1. INSPECT COOLING FAN RESISTOR (w/ Air Conditioning)


    1. Inspect the cooling fan motor and/or the cooling fan resistor after warming up the engine according to the table below. If the result is not as specified, replace the cooling fan motor and/or the cooling fan resistor.

      Cooling fan control strategy :
      Air conditioning condition Engine coolant temperature
      Compressor Refrigerant Pressure 97 to 105°C (206.6 to 221°F) 105°C (221°F) or more
      OFF - Low speed High speed
      ON Low pressure Low speed High speed
      High pressure High speed High speed

      Tech Tips


      • When engine coolant temperature is 115°C (239°F) or more, the operation of the air conditioner compressor is stopped.

      • When engine coolant temperature is more than 118°C (244.4°F), the warning light comes on.

  2. INSPECT ENGINE ROOM R/B,J/B (w/o Air Conditioning)


    1. Inspect the resistance.

      A0137I1E03

      1. Using an ohmmeter, measure the resistance between the terminals.

        Standard resistance
        Tester Connection Specified Condition
        G1-E2 10 kΩ or higher
        G1-E2

        Below 1 Ω

        (When battery voltage is applied to terminals D5-D6)

        If the result is not as specified, replace the engine room relay block and junction block.

    2. Inspect the cooling fan motor after warming up the engine according to the table below. If the result is not as specified, replace the cooling fan motor.

      Cooling fan control strategy :
      Engine coolant temperature Less than 97°C (206.6°F) 97°C (206.6°F) or higher
      Cooling fan operation OFF ON