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Home >> Lexus >> 2020 >> LS 500h AWD >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Heating / Air Conditioning System - Service Information (3 Of 4) >> COMPRESSOR (for AWD) >> Installation [10/2020 - 11/2021] >> Procedure

Installation [10/2020 - 11/2021]: Procedure

  1. INSTALL COOLER COMPRESSOR PACKING (for Type A) 
    NOTE:
    • The connector for the type A compressor with motor assembly has cooler compressor packing applied as shown in the illustration. Do not remove the cooler compressor packing.
      GTY801179Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *A for Type A *B for Type B
      *a Rib - -
      Cooler Compressor Packing - -
    • If the cooler compressor packing has been peeled off, apply new cooler compressor packing according to the procedures listed below.
    1. Completely remove the cooler compressor packing from the compressor with motor assembly.
    2. Apply new cooler compressor packing to the location shown in the illustration.
      GTY821663Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Cooler Compressor Packing Application Area (Corner Only) *b Chamfered Edge of Connector
      *c Rail - -
      Cooler Compressor Packing - -
      NOTE:

      If the connector is installed as shown below, water may enter between the connectors. Therefore, make sure that the connectors are installed correctly. 

      • Make sure that cooler compressor packing is not protruding from the edges of the connectors. Do not apply cooler compressor packing so that it protrudes onto the surface of the installation.
      • Do not allow tape to extend onto the ribs on the rails, etc.
  2. ADJUST COMPRESSOR OIL 
    1. When replacing the compressor with motor assembly with a new one, drain the following amount of oil from the position shown by the arrow in the illustration before installing the new compressor with motor assembly.
      GTY805522Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard

      30 cc (1.01 fl.oz) from new compressor with motor assembly.

      NOTE:
      • If a new compressor with motor assembly is installed without removing some oil, there will be too much oil in the system due to the oil remaining in the pipes of the vehicle. Excessive oil in the system prevents heat exchange in the refrigeration cycle and causes ineffective cooling.
      • If the amount of oil remaining in the old compressor with motor assembly is too small, check the air conditioning system for oil leaks.
      • Be sure to use ND-OIL 11 or equivalent compressor oil. If any compressor oil other than ND-OIL 11 is used, compressor with motor assembly insulation performance may decrease, resulting in leakage of electric power.
  3. INSTALL COMPRESSOR WITH MOTOR ASSEMBLY 
    1. Using an E8 "TORX" socket wrench, temporarily install the compressor with motor assembly with the 2 stud bolts.

      Torque: 10 N.m (102 kgf/cm, 7 ft.lbf) 

      GTY814552Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Install the compressor with motor assembly with the 2 nuts and 2 bolts.
      GTY820904Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Nut
      Bolt
      NOTE:

      Tighten the 2 nuts and 2 bolts in the order shown in the illustration.

      Torque: 24.5 N.m (250 kgf/cm, 18 ft.lbf) 

    3. Remove the vinyl tape wrapped around the connector (E).
    4. Connect the connector (E) and slide the green-colored lock as shown in the illustration to lock it securely.
      WARNING:

      Make sure to wear insulating gloves.

      GTY782174Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Stopper
      *b Green-colored Lock
      Bolt (B)
      Connector (E)
      Slide
      NOTE:

      Make sure that the connector is connected securely.

    5. Install the wiring harness clamp bracket (bolt (B) fastening side) with the bolt (B).
      NOTE:

      Install with a stopper on upper area of the compressor with motor assembly.

      Torque: 10 N.m (102 kgf/cm, 7 ft.lbf) 

    6. Install the wiring harness clamp bracket (bolt (A) fastening side) with the bolt (A).
      NOTE:

      Install by attaching the rib on the surface of the compressor with motor assembly as shown in the illustration.

      Torque: 10 N.m (102 kgf/cm, 7 ft.lbf) 

      GTY971421Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Rib
      Bolt (A)
      Connector (D)
    7. Connect the connector (D).
  4. INSTALL NO. 13 CONNECTOR HOLDER 
    1. Attach the clamp and guide to install the No. 13 connector holder.
      GTY971734Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Clamp
      *b Guide
      Connector (B)
      Connector (C)
    2. Connect the connector (B) and connector (C).
    3. Remove the vinyl tape wrapped around the connector (A).
    4. Connect the connector (A) and slide the green-colored lock as shown in the illustration to lock it securely.
      GTY971229Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Green-colored Lock
      Connector (A)
      Slide
      WARNING:

      Make sure to wear insulating gloves.

      NOTE:

      Make sure that the connector is connected securely.

    5. Connect the 2 connectors.
      GTY970632Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. CONNECT DISCHARGE HOSE SUB-ASSEMBLY 
    1. Remove the vinyl tape from the discharge hose sub-assembly and connecting part of the compressor with motor assembly.
    2. Sufficiently apply compressor oil to a new O-ring and the fitting surface of the compressor with motor assembly.

      Compressor Oil

      ND-OIL 11 or equivalent

      NOTE:

      Do not use any compressor oil other than ND-OIL 11 or equivalent. If any compressor oil other than ND-OIL 11 or equivalent is used, compressor motor insulation performance may decrease, resulting in leakage of electric power.

    3. Install the O-ring to the discharge hose sub-assembly.
      NOTE:

      Keep the O-ring and O-ring fitting surface free of foreign matter.

    4. Connect the discharge hose sub-assembly to the compressor with motor assembly with the bolt.

      Torque: 9.8 N.m (100 kgf/cm, 87 in.lbf) 

      GTY814548Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:
      • Do not apply excessive force to the discharge hose sub-assembly.
      • Make sure not to cut the O-ring while installing it. (Cut O-rings cannot be installed)
  6. INSTALL SUCTION HOSE SUB-ASSEMBLY 
    1. Remove the vinyl tape from the suction hose sub-assembly, suction tube sub-assembly B and connecting part of the compressor with motor assembly.
    2. Sufficiently apply compressor oil to 2 new O-rings and the fitting surface of the suction tube sub-assembly B and the fitting surface of the compressor with motor assembly.

      Compressor Oil

      ND-OIL 11 or equivalent

      NOTE:

      Do not use any compressor oil other than ND-OIL 11 or equivalent. If any compressor oil other than ND-OIL 11 or equivalent is used, compressor motor insulation performance may decrease, resulting in leakage of electric power.

    3. Install the 2 O-rings to the suction hose sub-assembly.
      NOTE:

      Keep the O-ring and O-ring fitting surface free of foreign matter.

    4. Install the suction hose sub-assembly to the compressor with motor assembly with the bolt and nut.

      Torque: 9.8 N.m (100 kgf/cm, 87 in.lbf) 

      GTY832186Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Bolt
      Nut
      NOTE:
      • Do not apply excessive force to the suction hose sub-assembly.
      • Make sure not to cut the O-ring while installing it. (Cut O-rings cannot be installed)
  7. INSTALL ECM 

    Refer to PROCEDURE - Step 3

  8. INSTALL RADIATOR SUPPORT TO CROSSMEMBER BRACE SUB-ASSEMBLY LH 
    1. Install the radiator support to crossmember brace sub-assembly LH with the 2 bolts.
      GTY837321Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Torque: 49 N.m (500 kgf/cm, 36 ft.lbf) 

  9. INSTALL SERVICE PLUG GRIP 

    Refer to INSTALLATION [10/2020 - ]

  10. CHARGE AIR CONDITIONING SYSTEM WITH REFRIGERANT 

    Refer to PROCEDURE - Step 5

  11. WARM UP COMPRESSOR 

    Refer to PROCEDURE - Step 6

  12. INSPECT FOR REFRIGERANT LEAK 

    Refer to PROCEDURE - Step 7

  13. INSTALL LOWER RADIATOR AIR DEFLECTOR 

    Refer to PROCEDURE - Step 8

  14. INSTALL UPPER RADIATOR SUPPORT SEAL 

    Refer to PROCEDURE - Step 9

  15. INSTALL RADIATOR COVER PLATE 

    Refer to PROCEDURE - Step 10

  16. INSTALL V-BANK COVER SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 150