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Home >> Toyota >> 2016 >> Corolla S, Standard Trans >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Air Conditioning System (Service Information) (Model Code: ZRE172) >> Air Conditioning Unit >> Removal [08/2016 - ] >> Procedure

Removal [08/2016 - ]: Procedure

  1. PRECAUTION (for Automatic Air Conditioning System) 
    NOTE:

    Make sure to select face mode before disconnecting the cable from the negative (-) battery terminal.

  2. RECOVER REFRIGERANT FROM REFRIGERATION SYSTEM (w/ Cooler System) 

    See step  1

  3. DISCONNECT SUCTION TUBE SUB-ASSEMBLY B (w/ Cooler System) 
    1. Remove the bolt and rotate the hook connector.
      GTY434786Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the suction tube sub-assembly B.
      GTY434785Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Remove the O-ring from the suction tube sub-assembly B.
      NOTE:

      Seal the openings of the disconnected parts using vinyl tape to prevent the entry of moisture and foreign matter.

  4. DISCONNECT AIR CONDITIONER TUBE AND ACCESSORY ASSEMBLY (w/ Cooler System) 
    1. Disconnect the air conditioner tube and accessory assembly.
      GTY452789Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the O-ring from the air conditioner tube and accessory assembly.
      NOTE:

      Seal the openings of the disconnected parts using vinyl tape to prevent the entry of moisture and foreign matter.

  5. DISCONNECT HEATER WATER OUTLET HOSE 
    1. Using pliers, grip the claws of the clip and slide the clip to disconnect the heater water outlet hose.
      GTY434782Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:
      • Do not apply excessive force to the heater water outlet hose.
      • Prepare a drain pan or cloth in case the coolant leaks.
  6. DISCONNECT HEATER WATER INLET HOSE 
    1. Using pliers, grip the claws of the clip and slide the clip to disconnect the heater water inlet hose.
      GTY434781Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:
      • Do not apply excessive force to the heater water inlet hose.
      • Prepare a drain pan or cloth in case the coolant leaks.
  7. REMOVE LOWER INSTRUMENT PANEL SUB-ASSEMBLY 

    Refer to REMOVAL [08/2016 - ]

  8. REMOVE STEERING COLUMN ASSEMBLY 

    Refer to REMOVAL [08/2016 - 08/2017] Refer to REMOVAL [08/2017 - ]

  9. REMOVE POWER STEERING ECU ASSEMBLY 

    Refer to PROCEDURE - Step 2

  10. REMOVE DRIVER SIDE JUNCTION BLOCK ASSEMBLY WITH MAIN BODY ECU 

    Refer to PROCEDURE - Step 5

  11. REMOVE SKID CONTROL BUZZER (w/ Toyota Safety Sense P) 

    Refer to PROCEDURE - Step 2

  12. REMOVE DRIVING SUPPORT ECU ASSEMBLY (w/ Toyota Safety Sense P) 

    Refer to PROCEDURE - Step 3

  13. REMOVE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) (w/ Network Gateway ECU) 

    Refer to PROCEDURE - Step 3

  14. REMOVE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (w/ Smart Key System) 

    Refer to PROCEDURE - Step 2

  15. REMOVE REAR NO. 1 AIR DUCT (for Cold Area) 
    1. Disengage the 8 claws to remove the rear No. 1 air duct.
      GTY377380Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  16. REMOVE COOLER (ROOM TEMP. SENSOR) THERMISTOR (for Automatic Air Conditioning System) 
    1. Disconnect the connector and aspirator to remove the cooler (room temp. sensor) thermistor.
      GTY428601Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  17. REMOVE DEFROSTER NOZZLE ASSEMBLY 
    1. Disengage the 6 claws and remove the defroster nozzle assembly.
      GTY428979Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  18. REMOVE CENTER INSTRUMENT PANEL TO COWL BRACE 
    GTY428978Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Remove the 2 bolts and center instrument panel to cowl brace.
  19. DISCONNECT INSTRUMENT PANEL WIRE 
    1. for Cold Area:
      GTY377377Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Disconnect the 2 connectors.
    2. Remove the 2 bolts <A> and disconnect the ground portion of the wiring harness protector cover and earth wire.
      GTY432084Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *A for Manual Air Conditioning System *B for Automatic Air Conditioning System
      *a Ground Portion of Wiring Harness Protector Cover *b Earth Wire
      Bolt <A> Bolt <B>
      Connector - -
    3. Remove the 5 bolts <B>.
    4. Disconnect each connector.
    5. Disengage each clamp and disconnect the instrument panel wire.
  20. REMOVE NO. 1 INSTRUMENT PANEL BRACE SUB-ASSEMBLY 
    1. Using a clip remover, remove the clip.
      GTY434805Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Turn back the front floor carpet assembly as shown in the illustration.
    3. Remove the bolt, screw, nut and No. 1 instrument panel brace sub-assembly.
      GTY442388Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Bolt
      Screw
      Nut
  21. REMOVE NO. 2 INSTRUMENT PANEL BRACE SUB-ASSEMBLY 
    1. Using a clip remover, remove the clip.
      GTY434808Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Turn back the front floor carpet assembly as shown in the illustration.
    3. Remove the bolt, screw, nut and No. 2 instrument panel brace sub-assembly.
      GTY434047Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Bolt
      Screw
      Nut
  22. REMOVE INSTRUMENT PANEL REINFORCEMENT ASSEMBLY 
    1. Remove the 8 bolts and instrument panel reinforcement assembly.
      GTY434809Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  23. REMOVE AIR CONDITIONER UNIT ASSEMBLY 
    1. Disconnect the drain cooler hose.
      GTY434611Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Bolt Nut
    2. Remove the bolt and nut.
    3. Remove the bolt and disconnect the ID code box (immobiliser code ECU).
      GTY434801Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Remove the air conditioner unit assembly.
  24. REMOVE NO. 2 AIR DUCT SUB-ASSEMBLY 
    1. Disengage the 2 claws and remove the No. 2 air duct sub-assembly.
      GTY377356Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      If any of the claws of the No. 2 air duct sub-assembly have been cracked or deformed during removal, make sure to replace the No. 2 air duct sub-assembly with a new one. Failure to do so may cause the No. 2 air duct sub-assembly to fall off or noise to occur.

  25. REMOVE NO. 1 AIR DUCT SUB-ASSEMBLY 
    1. Disengage the 2 claws and remove the No. 1 air duct sub-assembly.
      GTY377354Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      If any of the claws of the No. 1 air duct sub-assembly have been cracked or deformed during removal, make sure to replace the No. 1 air duct sub-assembly with a new one. Failure to do so may cause the No. 1 air duct sub-assembly to fall off or noise to occur.

  26. REMOVE AIR CONDITIONING RADIATOR ASSEMBLY 
    1. for Cold Area:
      1. Remove the screw.
        GTY383828Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. Disengage each clamp and disconnect the wire harness.
    2. for Automatic Air Conditioning System:
      1. Disconnect the connector.
        GTY453924Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *A for Automatic Air Conditioning System - -
    3. Remove the 3 screws and air conditioning radiator assembly.
  27. REMOVE HEATER COVER (except Cold Area) 
    1. Disengage the 4 claws to remove the heater cover.
      GTY428975Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  28. REMOVE ASPIRATOR (for Automatic Air Conditioning System) 
    1. Disengage the 2 claws to remove the aspirator.
      GTY377361Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  29. REMOVE CONSOLE MOUNTING BRACKET LH 
    1. Remove the screw and console mounting bracket LH.
      GTY428973Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  30. REMOVE CONSOLE MOUNTING BRACKET RH 
    1. Disengage the 2 claws to remove the console mounting bracket RH.
      GTY451526Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  31. REMOVE AIR CONDITIONING AMPLIFIER ASSEMBLY (for Manual Air Conditioning System) 
    1. Remove the screw.
      GTY428972Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the air conditioning amplifier assembly as shown in the illustration.
      GTY428971Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  32. REMOVE AIR CONDITIONING AMPLIFIER ASSEMBLY (for Automatic Air Conditioning System) 
    1. Disconnect the connector.
      GTY428970Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the screw.
    3. Remove the air conditioning amplifier assembly as shown in the illustration.
      GTY428992Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  33. REMOVE DRAIN COOLER HOSE 
    1. Remove the drain cooler hose.
      GTY423146Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  34. REMOVE AIR CONDITIONING HARNESS ASSEMBLY (for Automatic Air Conditioning System) 
    1. Disengage each clamp.
      GTY434813Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect each connector.
    3. Remove the air conditioning harness assembly as shown in the illustration.
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