2Zr-Fe Engine Control. Engine Coolant Temperature Sensor Installation

Engine Hybrid System. Corolla. Zre142 Aze141

2Zr-Fe Engine Control. Corolla. Zre142 Aze141

INSTALL ENGINE COOLANT TEMPERATURE SENSOR
INSTALL AIR CLEANER CAP SUB-ASSEMBLY
ADD ENGINE COOLANT
INSPECT FOR COOLANT LEAK
INSTALL NO. 2 CYLINDER HEAD COVER

Engine Coolant Temperature Sensor -- Installation

1. INSTALL ENGINE COOLANT TEMPERATURE SENSOR

Install the engine coolant temperature sensor through a new gasket.
Torque:
20 N*m{200 kgf*cm, 14 ft.*lbf}

Connect the engine coolant temperature sensor connector.

2. INSTALL AIR CLEANER CAP SUB-ASSEMBLY

Install the air cleaner cap sub-assembly with hose with the 2 clamps.

Tighten the hose clamp to the specified torque.
Torque:
2.0 N*m{20 kgf*cm, 18 in.*lbf}

Connect the ventilation hose.

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

3. ADD ENGINE COOLANT

Tighten the lower radiator drain cock plug.

Loosen the upper radiator drain cock plug.

Slowly fill the radiator with TOYOTA Super Long Life Coolant (SLLC).
Standard Capacity:
Item
Capacity
Engine coolant
5.5 liters (5.8 US qts, 4.8 lmp. qts)
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).
NOTICE:
Never use water as a substitute for engine coolant.

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.

Tighten the upper radiator drain cock plug.

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

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

Start the engine and warm it up.

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.

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

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

4. INSPECT FOR COOLANT LEAK

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.

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

Pump it to 118 kPa (1.2 kgf/cm², 17.0 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. 2 CYLINDER HEAD COVER

Engage the 4 clips to install the No. 2 cylinder head cover.
NOTICE:
1. Be sure to engage the clips securely.
2. Do not apply excessive force or do not hit the cover to engage the clips. This may cause the cover to break.

Item	Capacity
Engine coolant	5.5 liters (5.8 US qts, 4.8 lmp. qts)