Car engine cooling system Corolla Verso 3 (AR10)

Cooling system 1ZZ-FE and 3ZZ-FE — design description
Fig. 2.16. Cooling system of engines 1ZZ-FE and 3ZZ-FE Fig. 2.17. Block diagram of the cooling system of engines 1ZZ-FE and 3ZZ-FE Closed-circuit cooling system with forced circulation. Includes thermostat with bypass...

Cooling system CD-FTV — design description
Fig. 2.72. Engine cooling system 1CD-FTV Closed-circuit cooling system with forced circulation. To prevent the quality of the coolant from deteriorating when in contact with air, a sealed expansion tank is installed in...

On-car checks (1ZZ-FE / 3ZZ-FE)
Checking for leaks in the cooling system Remove the upper radiator shroud. Remove the radiator cap. Warning! Do not remove the radiator cap if the engine and radiator are hot, otherwise you may get burned. Hot coolant...

On-car checks (1CD-FTV)
Checking for leaks in the cooling system Remove the upper radiator shroud. Warning! Do not remove the radiator cap if the engine and radiator are hot, otherwise you may get burned. Hot coolant and steam may escape from...

Checking the thermostat (1ZZ-FE / 3ZZ-FE)
Checking the valve opening temperature Fig. 2.393. Immersion of the thermostat in water Place the thermostat in the water and heat it gradually (fig. 2.393). Fig. 2.392. Marking indicating the valve opening temperature...

Replacing the thermostat (1ZZ-FE / 3ZZ-FE)
Removal Disconnect the negative terminal from the battery post. Remove the lower left engine shield. Remove the lower engine shield No.1. Remove the lower right engine shield. Remove the upper radiator shroud. Remove...

Replacing the thermostat (1CD-FTV)
Removal Remove the upper radiator shroud. Drain the coolant. Disconnect coolant bypass hose #1, coolant bypass hose #2 and breather hose. Fig. 2.398. Expansion tank assembly Remove 2 bolts and remove the expansion tank...

Replacing the liquid in the cooling system (1ZZ-FE / 3ZZ-FE)
Draining the coolant Remove the upper radiator shroud. Drain the coolant. Warning! Do not remove the radiator cap if the engine and radiator are hot, otherwise you may get burned. Hot coolant and steam may escape from...

Replacing the liquid in the cooling system (1CD-FTV)
Draining the coolant Remove the expansion tank cap. Warning! Do not remove the radiator cap if the engine and radiator are hot, otherwise you may get burned. Hot coolant and steam may escape from the radiator. Remove...

Checking the cooling system fan (1ZZ-FE / 3ZZ-FE)
Checking the operation of the cooling system fan at low temperatures (below 94.5°C). Note. If the ignition is turned ON (ON (IG)), the cooling fan may sometimes turn on. This is not a sign of a malfunction. Turn on the...

Checking the cooling system fan (1CD-FTV)
Checking the operation of the cooling system fan at low temperatures (below 83°C) Turn on the ignition (START (IG)). Make sure the cooling fan is not spinning. Turn off the ignition (START (IG)). Disconnect the...

Checking the cooling fan relay
Checking the relay of the cooling system fan No.1 Check the resistance. Fig. 2.409. Checking the resistance of relay No.1 Use an ohmmeter to measure the resistance between the terminals (fig. 2.409). Verification...

Replacing the coolant pump assembly (1ZZ-FE / 3ZZ-FE)
Removal Disconnect the negative terminal from the battery post Remove the lower left engine shield. Remove the lower engine shield No.1. Remove the lower right engine shield. Remove the upper radiator shroud. Remove...

Replacing the radiator assembly (1ZZ-FE / 3ZZ-FE)
Disconnect the negative terminal from the battery post. Remove the lower engine shield No.1. Remove the upper radiator shroud. Drain the coolant. Disconnect the radiator inlet hose. Disconnect the radiator outlet hose....

Replacing the radiator assembly (1CD-FTV)
Drain the coolant. Disconnect the negative terminal from the battery post. Remove the upper radiator shroud. Removing the hood lock assembly Disconnect the breather hose. Disconnect the 2 horn connectors. Fig. 2.421....

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