LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 2016 >> Highlander Hybrid Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 61 (Engine Cooling System (2GR-FXS) - Service Information - (Hybrid)) >> Cooling Fan Ecu >> On-Vehicle Inspection [11/2016 - ] >> Procedure

On-Vehicle Inspection [11/2016 - ]: Procedure

WARNING: This page is about a different car, the 2019 Toyota Highlander, 2018 Toyota Highlander, and 2017 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK COOLING FAN SYSTEM 
    1. Check and ensure the following conditions:
      1. The power switch is off.
      2. The engine coolant temperature is less than 94°C (201°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 around either of the 2 wires for the cooling fan motor.
    3. Turn the power switch on (IG) and wait for approximately 10 seconds. Check that the cooling fans are not operating.
    4. Start the engine. Check that the cooling fans are not operating with the engine idling.

      HINT: 

      • Make sure that the engine coolant temperature is less than 94°C (201°F).
      • Turn the A/C switch off.
    5. Check that the cooling fans operate when the A/C switch is turned on.

      HINT: 

      • Adjust the air conditioning control to the maximum setting.
      • Adjust the blower speed to the high setting.
    6. Measure the current while the cooling fan motors are operating.

      Standard Current

      Item Condition Specified Condition
      Cooling fan motor LH Auxiliary battery voltage applied at 20°C (68°F) 13.5 to 24.0 A
      Cooling fan motor RH 13.5 to 24.0 A

      HINT: 

      The engine coolant temperature should be less than 94°C (201°F).

    7. Check that the cooling fans operate when the engine coolant temperature sensor connector is disconnected.
    8. Measure the current while the cooling fan motors are operating.

      Standard Current

      Item Condition Specified Condition
      Cooling fan motor LH Auxiliary battery voltage applied at 20°C (68°F) 13.5 to 24.0 A
      Cooling fan motor RH 13.5 to 24.0 A
    9. After the engine is warmed up, check that the cooling fans operate as shown in the illustration.
      GTY451748Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Operating Diagram
      *b MAX HI
      *c HI
      *d LO
      *e OFF
      *f Fan Speed

      HINT: 

      • The engine coolant temperature at which the fan starts operating is approximately 96°C (205°F).
      • This system can also be checked using the Techstream.

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

      Powertrain > Engine and ECT > Data List 

      Tester Display
      Coolant Temp
scientia non olet · About LEMON Manuals