Air Conditioning Unit Disassembly

Vehicle Interior. Corolla. Zre142 Aze141
Heating Air Conditioning. Corolla. Zre142 Aze141

  1. REMOVE IMMOBILIZER CODE ECU (w/ Smart Key System)

  2. REMOVE TRANSPONDER KEY ECU (w/o Smart Key System)

  3. REMOVE AIR OUTLET CONTROL SERVO MOTOR (for Automatic Air Conditioning System)

  4. REMOVE AIR MIX CONTROL SERVO MOTOR (for TMC Made with Automatic Air Conditioning System)

  5. REMOVE AIR MIX CONTROL SERVO MOTOR (for TMMC Made with Automatic Air Conditioning System)

  6. REMOVE NO. 2 HEATER CONTROL CABLE SUB-ASSEMBLY (for Manual Air Conditioning System)

  7. REMOVE AIR MIX DAMPER CONTROL CABLE SUB-ASSEMBLY (for Manual Air Conditioning System)

  8. REMOVE QUICK HEATER ASSEMBLY (w/ PTC Heater)

  9. REMOVE AIR CONDITIONING HARNESS ASSEMBLY (for Automatic Air Conditioning System)

  10. REMOVE CONSOLE MOUNTING BRACKET RH

  11. REMOVE CONSOLE MOUNTING BRACKET LH

  12. REMOVE AIR CONDITIONING AMPLIFIER ASSEMBLY

  13. REMOVE AIR CONDITIONING DUCT SUB-ASSEMBLY (for Automatic Air Conditioning System)

  14. REMOVE DRAIN COOLER HOSE

  15. REMOVE HEATER RADIATOR UNIT SUB-ASSEMBLY

  16. REMOVE COOLER EXPANSION VALVE

  17. REMOVE NO. 1 COOLER EVAPORATOR SUB-ASSEMBLY

  18. REMOVE NO. 1 COOLER THERMISTOR

Air Conditioning Unit -- Disassembly



1. REMOVE IMMOBILIZER CODE ECU (w/ Smart Key System)


  1. Disconnect the connector.


    Corolla. Zre142 Aze141.Heating Air Conditioning.Air Conditioning System (For Automatic Air Conditioning System).Air Conditioning Unit  Disassembly

  1. Disengage the clamp.

  1. Remove the bolt and the immobilizer code ECU.



2. REMOVE TRANSPONDER KEY ECU (w/o Smart Key System)


  1. Disconnect the connector.


    Corolla. Zre142 Aze141.Heating Air Conditioning.Air Conditioning System (For Automatic Air Conditioning System).Air Conditioning Unit  Disassembly

  1. Disengage the clamp.

  1. Remove the bolt and the transponder key ECU.



3. REMOVE AIR OUTLET CONTROL SERVO MOTOR (for Automatic Air Conditioning System)


    Corolla. Zre142 Aze141
  1. Disconnect the connector.

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



4. REMOVE AIR MIX CONTROL SERVO MOTOR (for TMC Made with Automatic Air Conditioning System)


    Corolla. Zre142 Aze141
  1. Disconnect the connector.

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



5. REMOVE AIR MIX CONTROL SERVO MOTOR (for TMMC Made with Automatic Air Conditioning System)


    Corolla. Zre142 Aze141
  1. Disconnect the connector.

  1. Remove the 2 screws and the air mix control servo motor.



6. REMOVE NO. 2 HEATER CONTROL CABLE SUB-ASSEMBLY (for Manual Air Conditioning System)


    Corolla. Zre142 Aze141.Heating Air Conditioning.Air Conditioning System (For Automatic Air Conditioning System).Air Conditioning Unit  Disassembly
  1. Using a screwdriver with the tip taped, disengage the claw and remove the No. 2 heater control cable sub-assembly.



7. REMOVE AIR MIX DAMPER CONTROL CABLE SUB-ASSEMBLY (for Manual Air Conditioning System)


    Corolla. Zre142 Aze141.Heating Air Conditioning.Air Conditioning System (For Automatic Air Conditioning System).Air Conditioning Unit  Disassembly
  1. Using a screwdriver with the tip taped, disengage the claw and remove the air mix damper control cable sub-assembly.



8. REMOVE QUICK HEATER ASSEMBLY (w/ PTC Heater)


    Corolla. Zre142 Aze141
  1. Disengage each clamp.

  1. Remove the 2 screws.



    Corolla. Zre142 Aze141
  1. Remove the quick heater assembly as shown in the illustration.



9. REMOVE AIR CONDITIONING HARNESS ASSEMBLY (for Automatic Air Conditioning System)


    Corolla. Zre142 Aze141
  1. Disconnect the connector.

  1. Disengage each clamp and remove the air conditioning harness.



10. REMOVE CONSOLE MOUNTING BRACKET RH


    Corolla. Zre142 Aze141
  1. Disengage the 2 claws and remove the console mounting bracket RH as shown in the illustration.



11. REMOVE CONSOLE MOUNTING BRACKET LH


    Corolla. Zre142 Aze141
  1. Remove the screw and the console mounting bracket LH.



12. REMOVE AIR CONDITIONING AMPLIFIER ASSEMBLY


    Corolla. Zre142 Aze141
  1. Remove the screw.

  1. Disengage the claw and remove the air conditioning amplifier assembly as shown in the illustration.



13. REMOVE AIR CONDITIONING DUCT SUB-ASSEMBLY (for Automatic Air Conditioning System)


    Corolla. Zre142 Aze141
  1. Disengage the 2 claws and remove the air conditioning duct sub-assembly.



14. REMOVE DRAIN COOLER HOSE


    Corolla. Zre142 Aze141
  1. Remove the drain cooler hose from the air conditioning radiator assembly.



15. REMOVE HEATER RADIATOR UNIT SUB-ASSEMBLY


    Corolla. Zre142 Aze141.Heating Air Conditioning.Air Conditioning System (For Automatic Air Conditioning System).Air Conditioning Unit  Disassembly
  1. Remove the screw and the clamp.

  1. Remove the heater radiator unit sub-assembly from the air conditioning unit assembly.



16. REMOVE COOLER EXPANSION VALVE


    Corolla. Zre142 Aze141
  1. Using a 4 mm hexagon wrench, remove the 2 hexagon bolts and cooler expansion valve.



17. REMOVE NO. 1 COOLER EVAPORATOR SUB-ASSEMBLY


    Corolla. Zre142 Aze141
  1. Remove the 4 screws.



    Corolla. Zre142 Aze141
  1. Disengage the 4 claws and remove the lower heater case.



    Corolla. Zre142 Aze141
  1. Disengage the clamp, and remove the No. 1 cooler evaporator sub-assembly together with the No. 1 cooler thermistor.

  1. Remove the 2 O-rings.



18. REMOVE NO. 1 COOLER THERMISTOR


    Corolla. Zre142 Aze141
  1. Remove the No. 1 cooler thermistor from the No. 1 cooler evaporator sub-assembly.