Lexus IS250 · Service Manual HEATER & AIR CONDITIONING SYSTEM

DISASSEMBLY

Removal / installation


1. REMOVE AIR OUTLET CONTROL SERVO MOTOR

  1. E107625
    Disconnect the connector.

  1. Remove the 3 screws and air outlet control servo motor.


2. REMOVE AIR MIX CONTROL SERVO MOTOR

  1. E107626E01
    Remove the 4 clamps and connector, and disconnect the wire harness.

  1. E125185
    Remove the 3 screws and heater piping cover.

  1. E107627
    Remove the 3 screws and air mix control servo motor.


3. REMOVE COOLER EXPANSION VALVE

  1. E107632
    Remove the packing from the air conditioning tube assembly.

  1. E107633
    Using a hexagon wrench 4 mm, remove the 2 hexagon bolts and air conditioning tube assembly.

  1. Remove the 2 O-rings from the air conditioning tube assembly.

  1. E107634
    Remove the cooler expansion valve from the No. 1 cooler evaporator sub-assembly.


4. REMOVE AIR CONDITIONING HARNESS ASSEMBLY

  1. E108980E01
    Remove the 2 connectors and 5 clamps, and then disconnect the wire harness.

  1. Remove the air conditioning harness assembly as shown in the illustration.


5. REMOVE AIR OUTLET CONTROL SERVO MOTOR

  1. E107657
    Remove the 2 screws and the air duct.

  1. E107629
    Remove the 4 screws and the servo motor plate.

  1. E119810
    Remove the 2 screws.

  1. Release the claw and remove the air outlet control servo motor from the servo motor plate.


6. REMOVE AIR MIX CONTROL SERVO MOTOR

  1. E119811
    Remove the 2 screws.

  1. Release the claw and remove the air mix control servo motor from the servo motor plate.


7. REMOVE HEATER RADIATOR UNIT SUB-ASSEMBLY

  1. E125186
    Remove the screw and clamp.

  1. Remove the heater radiator unit sub-assembly.


8. REMOVE NO. 1 COOLER EVAPORATOR SUB-ASSEMBLY

  1. E119812
    Remove the 5 screws.

  1. Release the 3 claws and remove the air duct.

  1. E107636
    Remove the No. 1 cooler evaporator sub-assembly from the air duct.

  1. Remove the 2 O-rings from the No. 1 cooler evaporator sub-assembly.

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