Click here

COOLING FAN ECU ON-VEHICLE INSPECTION

Click here
Click here

PROCEDURE


  1. Click here

    INSPECT COOLING FAN ECU


    1. Put the vehicle in the following conditions:


      1. The power switch is off.

      2. The coolant temperature is less than 92°C (198°F).

      3. The auxiliary battery voltage is between 11 to 14 V.

      4. The A/C switch is off.

    2. Connect the pickup of a clamp-on ammeter over one of the two wires for the cooling fan motor.

    3. Turn the power switch on (IG) and wait for approximately 10 seconds. Check that the fan stops.

    4. Start the engine. Check that the fan stops with the engine idling.

      Tip:

      • Make sure that the coolant temperature is less than 92°C (198°F).


      • Turn the A/C switch off.

    5. Check that the fan operates when the A/C switch is turned on.

      Standard Current
      Item Specified Condition
      Cooling fan motor 10.6 to 16.6 A
      No. 2 cooling fan motor 10.6 to 16.6 A
      Tip:

      Make sure that the coolant temperature is less than 92°C (198°F).

    6. Check that the fan operates when the engine coolant temperature sensor connector is disconnected.

      Standard Current
      Item Specified Condition
      Cooling fan motor 10.6 to 16.6 A
      No. 2 cooling fan motor 10.6 to 16.6 A
    7. A00048TE06
      Table 1.
      *1 Operating Diagram
      *2 A/C OFF
      *3 Fan Speed

      After the engine is warmed up, check that the fan operates as shown in the illustration.

      Tip:

      • The coolant temperature at which the fan starts operating is approximately 94°C (201°F).

      • This system can also be checked using the GTS.

      • Select the following menu items: Powertrain / Engine and ECT / Data List / All Data / Coolant Temp.