COOLING FAN SYSTEM ON-VEHICLE INSPECTION

PROCEDURE

1. INSPECT COOLING FAN SYSTEM OPERATION AT LOW TEMPERATURES

   1. Check and ensure the following conditions:

      1. The ignition switch is off.

      2. The engine coolant temperature is less than 90°C (194°F).

      3. The A/C switch is off.

   2. Turn the ignition switch to ON and wait for approximately 10 seconds. Check that the fan is not operating.

   3. Check that the fan operates when the water temperature sensor connector is disconnected.

2. INSPECT COOLING FAN SYSTEM OPERATION AT HIGH TEMPERATURES

   1. Check and ensure the following conditions:

      1. Warm up the engine.

      2. The engine coolant temperature is less than 90°C (194°F).

      3. The A/C switch is off.

   2. Start the engine. Check that the fan is not operating.

   3. Check that the fan starts operating when the engine coolant temperature reaches approximately 92°C (198°F).

      Tip:

      This system can also be checked using the GTS.

      Enter the following menus: Powertrain / Engine and ECT / Data List / Coolant Temp.

      Powertrain > Engine and ECT > Data List

      Tester Display
      Coolant Temp