Throttle Body Installation

Engine Hybrid System. Corolla. Zre142 Aze141
2Az-Fe Engine Control. Corolla. Zre142 Aze141

  1. INSTALL THROTTLE BODY ASSEMBLY

  2. INSTALL AIR CLEANER CAP SUB-ASSEMBLY WITH HOSE

  3. ADD ENGINE COOLANT

  4. INSPECT FOR COOLANT LEAK

  5. INSTALL NO. 1 ENGINE COVER SUB-ASSEMBLY

  6. PERFORM INITIALIZATION

Throttle Body -- Installation



1. INSTALL THROTTLE BODY ASSEMBLY


    Corolla. Zre142 Aze141

  1. Install a new gasket onto the intake manifold.



    Corolla. Zre142 Aze141

  1. Install the throttle body assembly with the 4 bolts.

    Torque:
    30 N*m{306 kgf*cm, 22 ft.*lbf}


    Corolla. Zre142 Aze141

  1. Connect the throttle body connector.



    Corolla. Zre142 Aze141

  1. Connect the 2 water by-pass hoses.



2. INSTALL AIR CLEANER CAP SUB-ASSEMBLY WITH HOSE


    Corolla. Zre142 Aze141

  1. Install the air cleaner cap sub-assembly with hose and lock the 3 clamps.

  1. Tighten the air cleaner hose clamp.



    Corolla. Zre142 Aze141

  1. Connect the ventilation hose.



    Corolla. Zre142 Aze141

  1. Connect the 2 vacuum hoses and No. 1 vacuum switching valve connector.



    Corolla. Zre142 Aze141

  1. Connect the 2 wire harness clamps and the mass air flow meter connector.



3. ADD ENGINE COOLANT

  1. Tighten the lower radiator drain cock plug.

  1. Tighten the cylinder block drain cock plug.

    Torque:
    13 N*m{130 kgf*cm, 9 ft.*lbf}

  1. Loosen the upper radiator drain cock plug.

  1. Slowly fill the radiator with TOYOTA Super Long Life Coolant (SLLC).

    Standard Capacity:
    Item
    		Capacity
    Engine coolant
    		5.7 liters (6.0 US qts, 5.0 lmp. qts)
    HINT:
    1. 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 consists of a combination of low phosphates and organic acids).
    2. Contact your TOYOTA dealer for further details.
    NOTICE:
    Never use water as a substitute for engine coolant.

  1. Squeeze the inlet and outlet radiator hoses several times by hand, and then check the level of the coolant.
    If the coolant level is low, add coolant.

  1. Tighten the upper radiator drain cock plug.

  1. Slowly pour coolant into the radiator reservoir tank until it reaches the FULL line.

  1. Install the radiator cap sub-assembly and reservoir tank cap.

  1. Start the engine and warm it up.

  1. Bleed air from the cooling system.

    NOTICE:
    1. Before starting the engine, turn the A/C switch off.
    2. Adjust the air conditioning temperature setting to MAX (HOT).
    3. Adjust the air conditioning blower setting to LO.

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

      HINT:
      Thermostat opening timing can be determined by squeezing the inlet radiator hose, and sensing vibrations when the engine coolant starts to flow inside the hose.
      CAUTION:
      When squeezing the radiator hoses:
      1. Wear protective gloves.
      2. Be careful as the radiator hoses are hot.
      3. Keep your hands away from the radiator fan.

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

  1. Add engine coolant to the FULL line on the radiator reservoir.



4. INSPECT FOR COOLANT LEAK


Corolla. Zre142 Aze141
CAUTION:
To avoid the danger of being burned, do not remove the radiator cap sub-assembly while the engine and radiator assembly are still hot. Thermal expansion will cause hot engine coolant and steam to blow out from the radiator assembly.

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

  1. Pump the tester to 118 kPa (1.2 kgf/cm2, 17.1 psi), then check that the pressure does not drop.
    If the pressure drops, check the hoses, radiator assembly and water pump assembly for leakage. If there are no signs or traces of external engine coolant leakage, check the heater core, cylinder block and head.



5. INSTALL NO. 1 ENGINE COVER SUB-ASSEMBLY


    Corolla. Zre142 Aze141

  1. Install the No. 1 engine cover sub-assembly with the 2 nuts.



6. PERFORM INITIALIZATION
NOTICE:
Be sure to perform this procedure after reassembling the throttle body assembly, removing and reinstalling any throttle body component or replacing the ECM.

  1. Disconnect the cable from the negative (-) battery terminal. Wait at least 60 seconds and reconnect the cable.

  1. Turn the ignition switch to ON without operating the accelerator pedal.

    NOTICE:
    If the accelerator pedal is operated, perform the above steps again.

  1. Connect the Techstream to the DLC3 and clear the DTCs (COROLLA_ZRE142 RM000000PDK0ZBX.html).

  1. Start the engine and check that the MIL is not illuminated and that the idle speed is within the specified range when the air conditioning is switched off after the engine is warmed up.

    Standard:
    Condition
    		Engine Idle Speed
    A/C switched off
    		600 to 700 rpm
    NOTICE:
    1. Be sure to perform this step with all accessories off.
    2. Make sure that the shift lever is in N or P.

  1. Enter the following menus: Powertrain/ Engine and ECT/ Data List/ Throttle Pos. Sensor Output. Fully depress the accelerator pedal and check that the value is 60% or more.

  1. Perform a road test and confirm that there are no abnormalities.