Cooling and heating systems — design description Engine cooling system Coolant circuit diagram (engine 2UZ-FE) All models of vehicles discussed in this manual are equipped with a positive pressure engine cooling system with thermostatically controlled circulation of...
Cooling and Heating Specifications Common parameters Characteristic Meaning Coolant volume see chapter Vehicle settings and routine maintenance Estimated pressure of the radiator cap, kgf/cm 2 0.95÷1.25 Thermostat opening temperature, deg. V8 engines...
Antifreeze — general information Attention! Do not allow antifreeze to come into contact with exposed areas of the body and painted surfaces of the car. Accidental splashes should be washed off immediately with plenty of water. Remember that antifreeze...
Check of serviceability of functioning and replacement of the thermostat Attention! Do not open the radiator cap and do not remove the thermostat until the engine has completely cooled down! See also the warning at the beginning of the Section Antifreeze - general information . Examination...
Checking the condition of the water pump The failure of the water pump can lead to the most serious consequences, up to the complete jamming of the engine as a result of overheating. A defective pump must be replaced. Warm up the engine to normal operating...
Removal and installation of the water pump Attention! Proceed with the procedure only after the engine has completely cooled down! See also the warnings at the beginning of the Section Antifreeze - general information . Gasoline engine water pump installation...
Checking and replacing the sensor unit of the coolant temperature meter Attention! Proceed with the procedure only after the engine has completely cooled down! See also the warnings at the beginning of the Section Antifreeze - general information . Remember that when the ignition is on, the...
Checking the drive electric motor of the heater fan and replacing it Warning! The vehicles covered in this manual are equipped with an additional security system (SRS), better known as an airbag. Before doing any work near the cushion or steering column assembly, be sure to turn off the...
Removal and installation of the block and heat exchanger of a heater Warning! Some of the vehicles discussed in this manual are equipped with an additional security system (SRS), better known as an airbag. Before doing any work near the cushion or steering column assembly, be sure to...
Removing and installing the heater and air conditioner control panel Warning! Some of the vehicles discussed in this manual are equipped with an additional security system (SRS), better known as an airbag. Before doing any work near the cushion or steering column assembly, be sure to...
Inspection and maintenance of heating and air conditioning systems Air conditioning system Attention! The air conditioning system is constantly under high pressure. Never disconnect refrigeration lines or remove any system components without first discharging the system. The discharge...