COOLING FAN SWITCH INSTALLATION


  1. INSTALL COOLING FAN SWITCH


    1. Install a new gasket onto the cooling fan switch.

    2. A003AR2

      Using a 19 mm deep socket wrench, install the cooling fan switch.

      Torque:
      20 N*m  { 200 kgf*cm, 14 ft.*lbf }

    3. Connect the cooling fan switch connector.

  2. ADD ENGINE COOLANT


    1. Firmly tighten the drain plugs.

    2. Fill the radiator reserve tank assembly with engine coolant to the top of the inlet.

      Standard capacity
      13.9 liters (14.6 US qts, 12.2 Imp qts)

      Note

      Do not substitute plain water for engine coolant.

      Tech Tips


      • Use of improper coolants may damage the engine cooling system.

      • Use only TOYOTA Super Long Life Coolant (SLLC) or similar high quality ethylene glycol based non-silicate, non-amine, non-nitrite, and non-borate coolant with long-life hybrid organic acid technology (coolant with long-life hybrid organic acid technology consists of a combination of low phosphates and organic acids).

    3. Loosen the bleeder plug of the water outlet sub-assembly.

    4. When air is bled and the engine coolant drains out, firmly tighten the bleeder plug.

      Torque:
      8.0 N*m  { 82 kgf*cm, 71 in.*lbf }
    5. A003EJI

      Add engine coolant up to the B line mark in the radiator reserve tank assembly and install the radiator cap sub-assembly.

    6. Warm up the engine until the thermostat opens.


      1. While the thermostat is open, circulate the engine coolant for several minutes.

        Tech Tips

        The thermostat open timing can be confirmed by pressing the No. 3 radiator hose by hand, and checking when the engine coolant starts to flow inside the hose.

    7. A003FFY

      After the engine cools down, check that the engine coolant level is between the LOW and FULL line.

  3. INSPECT FOR COOLANT LEAK

    CAUTION:

    Do not remove the radiator cap sub-assembly while the engine assembly and radiator assembly are still hot. Hot, pressurized engine coolant and steam may be released and cause serious burns.


    1. Fill the radiator assembly with coolant and attach a radiator cap tester to the radiator.

    2. Warm up the engine.

    3. Using a radiator cap tester, increase the pressure inside the radiator assembly to 137 kPa (1.4 kgf/cm2, 19.9 psi), and check that the pressure does not drop.

      Tech Tips

      If the pressure drops, check the hoses, radiator assembly and engine water pump assembly for leaks. If no external leaks are found, check the heater core, cylinder block sub-assembly and cylinder head sub-assembly.