Heating and air conditioning car Toyota Land Cruiser 70

Security measures
1. When working with refrigerant, safety precautions must be followed. a) Do not work with refrigerant in a closed room or near an open flame. b) Always wear safety glasses. c) Avoid contact with the refrigerant in the...

Cooling system
Installing a pressure gauge block 1. Close both valves on the pressure gauge block. 2. Connect the gauge block charging hoses to the compressor service ports. Make sure that the high and low pressure hoses are connected...

Compressor — checking on the car, removal, checking operation
Check on the car 1. Checking the electromagnetic clutch. a) Check that there are no traces of oil on the pressure plate and rotor. b) Check for noise and grease leaks at the clutch bearings. c) Connect the positive...

Capacitor — checking on the car, removal, installation
Check on the car 1. Check the condenser plates for clogging or damage. a) If the condenser is clogged, it should be washed with water and dried with compressed air. Caution: Do not damage the capacitor plates. b) If the...

Receiver — checking on the car, removal, installation
Check on the car 1. Check the tightness of the service window, fusible plug and receiver connections. 2. If any faults are detected, perform the necessary repairs. Removal 1. Remove the refrigerant from the system. 2....

Front cooling unit
Checking the expansion valve on a car 1. Install the pressure gauge block. 2. Check the operation of the expansion valve. a) Start the engine and set the idle speed to high. Turn on the air conditioner. b) Check that...

Rear cooling unit
Removal 1. Disconnect the suction and liquid pipes. 2. Remove the casing. 3. Remove the rear cooling unit. Installation in reverse order.

Temperature controller resistor
Check on the car 1. Disconnect the negative cable from the battery. 2. Remove the center trim panel 3. Disconnect the temperature control resistor connector. 4. Check the resistance of the resistor. Measure the...

Expansion valves
Check on the car Front A/C Expansion Valve 1. Check the refrigerant volume. 2. Install the pressure gauge block. 3. Set the front air conditioner switch to the "ON" position and the fan switch to the "HI" position (High...

Air Conditioner Control Panel
Air conditioning control panel. 1 - supercharger speed controller, 2 - temperature control lever, 3 - recirculation control lever, 4 - air flow control lever. Checking the fan switch Check the continuity between the...

Pressure switch
Check on the car Engine 2L-T, 3L, 2L: 1. Check the refrigerant pressure. a) Connect the pressure gauge block to the compressor service valves. b) The instrument reading should be greater than 206 kPa at an ambient...

Blower switches
Front Heater Blower Switch Check the continuity between the fan switch connector terminals. Replace the switch if the continuity is different from the table. Rear Heater Blower Switch Check the continuity between the...

Supercharger motors
Checking the blower motors Connect the positive battery cable to terminal 1 and the negative cable to terminal 2 of the front heater blower motor. Check for smooth operation of the motor. Repeat the procedure for the...

Supercharger resistors
Checking the front supercharger resistor Check for continuous continuity between all terminals of the resistor connector. If there is no continuity, replace the resistor. Checking the rear heater blower resistor 1....

Heater relay
Checking the front heater relay 1. Check for continuous continuity between terminals 1 and 3. 2. Check for continuous continuity between terminals 2 and 4 of the relay. 3. Check for continuity only between terminals 4...

Coolant Temperature Switch Sensor
Removal Remove the sensor as shown in the figure. Examination Check that the conductivity between the sensor terminals changes according to the graph provided (Conductivity should be present at temperatures above 108°C...

Vacuum valve
Examination 1. Disconnect the hoses and connector from the valve. 2. Checking the connections of the channels inside the vacuum valve. a) Connect the battery to the connector terminals as shown in the figure. b) Apply...

Air conditioner booster
1. Test conditions: a) "Ignition" is on. b) Temperature control knob: in the "MAX COOL" position (maximum cooling). c) Fan switch in the "HI" position (high speed). 2. Disconnect the amplifier and check the connector on...

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