Air outlet damper servo motor (for DEF mode) sends pulse signals to inform the air conditioning amplifier assembly of the damper position. The air conditioning amplifier assembly activates the motor (normal or reverse) based on the signals to move the air outlet damper (for DEF mode) to any position, which controls the air outlet changes.

The air conditioning amplifier assembly applies voltage (5 V) to the ambient temperature sensor and reads voltage changes as the resistance of the ambient temperature sensor changes.

The rear air outlet damper servo motor sends pulse signals to inform the air conditioning amplifier assembly of the damper position. The air conditioning amplifier assembly activates the motor (normal or reverse) based on the signals to move the rear air outlet damper to the appropriate position, which controls the air outlet modes.

The front room temperature sensor for the front seat is installed in the instrument panel to detect the room temperature and control the heater and air conditioner "auto" mode. The resistance of the room temperature sensor changes in accordance with the front room temperature. As the temperature decreases, the resistance increases. As the temperature increases, the resistance decreases.

*: The air conditioning amplifier memorizes the DTC of the respective malfunction that has occurred for the period of the time indicated in the brackets.

Connect the intelligent tester to the DLC3.

By operating each of the air conditioning control switches as shown in the diagram below, it is possible to enter the diagnostic check mode.

Connect the intelligent tester to the DLC3.

Disconnect the E36 and E35 air conditioning amplifier assembly connectors.

Land Cruiser URJ200 URJ202 GRJ200 VDJ200 HEATING / AIR CONDITIONING