Engine Coolant Temperature Sensor Installation


  1. INSTALL ENGINE COOLANT TEMPERATURE SENSOR

  2. CONNECT VANE PUMP ASSEMBLY

  3. ADD ENGINE COOLANT

  4. INSPECT FOR COOLANT LEAK

  5. INSTALL NO. 1 ENGINE COVER SUB-ASSEMBLY

Engine Coolant Temperature Sensor -- Installation



1. INSTALL ENGINE COOLANT TEMPERATURE SENSOR

  1. Install a new gasket to the engine coolant temperature sensor.

  1. Using SST, install the engine coolant temperature sensor to the cylinder head sub-assembly.

    SST
    09817-33191
    Torque:
    20 N*m{200 kgf*cm, 14 ft.*lbf}

  1. Connect the engine coolant temperature sensor connector.



2. CONNECT VANE PUMP ASSEMBLY

  1. Connect the vane pump assembly to the generator bracket with the 2 bolts.

    Torque:
    21 N*m{214 kgf*cm, 15 ft.*lbf}

  1. Connect the 2 connectors to the vane pump assembly.



3. ADD ENGINE COOLANT
CAUTION:
  1. Do not remove the radiator reservoir cap sub-assembly, vent plug, radiator drain cock plug while the engine and radiator assembly are still hot. Pressurized, hot engine coolant and steam may be released and cause serious burns.
  2. To prevent injury due to contact with an operating fan and generator V belt or cooling fan, keep your hands and clothing away from the fan and generator V belt and cooling fans when working in the engine compartment with the engine running.
  3. When pressing the radiator hoses, wear protective gloves
HINT:
Before starting the engine to warm up the engine, turn the A/C switch off.


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.1Gd-Ftv Engine Control.Ecd System.Engine Coolant Temperature Sensor Installation

  1. Add engine coolant through the radiator reservoir filler opening until the engine coolant reaches the "B" line.

    Text in Illustration
    *a
    		B Line

    Standard Capacity:

    Item
    		Specified Condition
    for Manual Transmission
    		except Cold Area Specification Vehicle
    		10.1 liters (10.7 US qts, 8.9 Imp. qts)
    for Cold Area Specification Vehicle
    		11.9 liters (12.6 US qts, 10.5 Imp. qts)
    for Automatic Transmission
    		except Cold Area Specification Vehicle
    		10.0 liters (10.6 US qts, 8.8 Imp. qts)
    for Cold Area Specification Vehicle
    		11.8 liters (12.5 US qts, 10.4 Imp. qts)
    NOTICE:
    Do not substitute plain water for engine coolant.
    HINT:
    TOYOTA vehicles are filled with TOYOTA SLLC at the factory. In order to avoid damage to the engine cooling system and other technical problems, only use TOYOTA SLLC or similar high quality ethylene glycol based non-silicate, non-amine, non-nitrite, non-borate coolant with long-life hybrid organic acid technology (coolant with long-life hybrid organic acid technology is a combination of low phosphates and organic acids).

  1. Press the No. 1 radiator hose and No. 2 radiator hose several times by hand, and then check the level of the engine coolant.
    If the coolant level drops below the B line, add engine coolant to the B line.

  1. Install the radiator reservoir cap sub-assembly.

  1. Using a wrench, install the vent plug.

    Torque:
    2.0 N*m{20 kgf*cm, 18 in.*lbf}

  1. Bleed air from the cooling system.

    1. Warm up the engine until the thermostat opens. While the thermostat is open, circulate the coolant for several minutes.

      NOTICE:
      1. Immediately after starting the engine, if the radiator reservoir sub-assembly does not have any engine coolant, perform the following: 1) stop the engine, 2) wait until the engine coolant has cooled down, and 3) add engine coolant.
      2. Do not start the engine when there is no coolant in the radiator reservoir sub-assembly.
      3. Make sure that the needle does not show an abnormally high temperature.
      4. If there is not enough coolant, the engine may overheat.
      HINT:
      The thermostat open timing can be confirmed by pressing the No. 2 radiator hose by hand, and checking when the engine coolant starts to flow inside the hose.

    2. Maintain the engine speed at 2000 to 2500 rpm.

    3. Press the No. 1 radiator hose and No. 2 radiator hose several times by hand to bleed air.

  1. Stop the engine, and wait until the engine coolant cools down to ambient temperature.

  1. Check the coolant level in the radiator reservoir sub-assembly.
    If the coolant level is low, add engine coolant to the radiator reservoir sub-assembly full line.



4. INSPECT FOR COOLANT LEAK
CAUTION:
Do not remove the radiator reservoir cap sub-assembly while the engine and radiator assembly are still hot. Pressurized, hot engine coolant and steam may be released and cause serious burns.
NOTICE:
Before each inspection, turn the A/C switch off.

  1. Remove the radiator reservoir cap sub-assembly.

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

  1. Warm up the engine.

  1. Using the radiator cap tester, increase the pressure inside the radiator assembly to 118 kPa (1.2 kgf/cm2, 17 psi), and check that the pressure does not drop.
    If the pressure drops, check the hoses, radiator assembly and engine water pump assembly for leaks.
    If there are no signs or traces of external engine coolant leakage, check the heater core, cylinder block assembly and cylinder head sub-assembly.

  1. Remove the radiator cap tester and install the radiator reservoir cap sub-assembly.



5. INSTALL NO. 1 ENGINE COVER SUB-ASSEMBLY


    Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155

  1. While pushing the No. 1 engine cover sub-assembly towards the rear, attach the 2 rear pins.

  1. Attach the 2 front clips to install the No. 1 engine cover sub-assembly.