Engine Coolant Temperature Sensor Removal

Engine. Lexus Is250, Is220D. Gse20 Ale20
4Gr-Fse Engine Control System. Lexus Is250, Is220D. Gse20 Ale20

  1. REMOVE COOL AIR INTAKE DUCT SEAL

  2. REMOVE ENGINE ROOM SIDE COVER LH

  3. REMOVE ENGINE ROOM SIDE COVER RH

  4. REMOVE V-BANK COVER SUB-ASSEMBLY

  5. REMOVE FRONT FENDER PROTECTOR UPPER LH

  6. REMOVE FRONT FENDER PROTECTOR UPPER RH

  7. REMOVE ROOF DRIP SIDE FINISH MOULDING LH

  8. REMOVE ROOF DRIP SIDE FINISH MOULDING RH

  9. REMOVE FRONT WIPER ARM HEAD CAP

  10. REMOVE WINDSHIELD WIPER ARM AND BLADE ASSEMBLY LH

  11. REMOVE WINDSHIELD WIPER ARM AND BLADE ASSEMBLY RH

  12. REMOVE COWL TOP VENTILATOR LOUVER SUB-ASSEMBLY

  13. DRAIN ENGINE COOLANT

  14. DISCONNECT NO. 2 VENTILATION HOSE

  15. REMOVE AIR CLEANER CAP WITH AIR CLEANER HOSE

  16. REMOVE THROTTLE BODY

  17. REMOVE INTAKE AIR SURGE TANK ASSEMBLY

  18. REMOVE INTAKE MANIFOLD

  19. REMOVE ENGINE COOLANT TEMPERATURE SENSOR

Engine Coolant Temperature Sensor -- Removal



1. REMOVE COOL AIR INTAKE DUCT SEAL


    Lexus Is250, Is220D. Gse20 Ale20
  1. Remove the 11 clips and intake duct seal.



2. REMOVE ENGINE ROOM SIDE COVER LH


    Lexus Is250, Is220D. Gse20 Ale20.4Gr-Fse Engine Control System.Sfi System.Engine Coolant Temperature Sensor  Removal
  1. Remove the 5 clips and side cover.



3. REMOVE ENGINE ROOM SIDE COVER RH


    Lexus Is250, Is220D. Gse20 Ale20.4Gr-Fse Engine Control System.Sfi System.Engine Coolant Temperature Sensor  Removal
  1. Remove the 2 clips and side cover.



4. REMOVE V-BANK COVER SUB-ASSEMBLY


    Lexus Is250, Is220D. Gse20 Ale20
  1. Raise the V-bank cover to disengage the clip on the rear of the cover. Raise the cover again to disengage the 2 clips on the front of the cover and remove the cover.

    NOTICE:
    Attempting to disengage both front and rear clips at the same time may cause the cover to break.


5. REMOVE FRONT FENDER PROTECTOR UPPER LH


    Lexus Is250, Is220D. Gse20 Ale20
  1. Using a clip remover, separate the clip on the rubber portion of the cowl top ventilator louver sub-assembly from the front upper fender protector LH.

  1. Disengage the 3 clips and the claw to remove the front fender protector upper LH.



6. REMOVE FRONT FENDER PROTECTOR UPPER RH
HINT:
Removal procedure of the RH side is the same as that of the LH side.


7. REMOVE ROOF DRIP SIDE FINISH MOULDING LH
  1. Put protective tape around the roof drip side finish moulding.



  1. Using a moulding remover, disengage the 6 clips and remove the roof drip side finish moulding.

    NOTICE:
    1. Do not remove the clips.
    2. If the clips are damaged or fall off, replace them with new clips.


    Lexus Is250, Is220D. Gse20 Ale20.4Gr-Fse Engine Control System.Sfi System.Engine Coolant Temperature Sensor  Removal



8. REMOVE ROOF DRIP SIDE FINISH MOULDING RH
HINT:
Removal procedure of the RH side is the same as that of the LH side.


9. REMOVE FRONT WIPER ARM HEAD CAP


    Lexus Is250, Is220D. Gse20 Ale20.4Gr-Fse Engine Control System.Sfi System.Engine Coolant Temperature Sensor  Removal
  1. Using a screwdriver, remove the front wiper arm head cap.

    HINT:
    1. Use the same procedures for the RH side and the LH side.
    2. Tape the screwdriver tip before use.


10. REMOVE WINDSHIELD WIPER ARM AND BLADE ASSEMBLY LH


    Lexus Is250, Is220D. Gse20 Ale20
  1. Remove the nut and the front wiper arm and blade assembly LH.



11. REMOVE WINDSHIELD WIPER ARM AND BLADE ASSEMBLY RH


    Lexus Is250, Is220D. Gse20 Ale20
  1. Remove the nut and the front wiper arm and blade assembly RH.



12. REMOVE COWL TOP VENTILATOR LOUVER SUB-ASSEMBLY


    Lexus Is250, Is220D. Gse20 Ale20
  1. Remove the 2 clips.



    Lexus Is250, Is220D. Gse20 Ale20
  1. Disengage the 11 claws, and pull out the cowl top ventilator louver sub-assembly.



13. DRAIN ENGINE COOLANT
NOTICE:
Do not remove the radiator cap while the engine and radiator are still hot. Pressurized, hot engine coolant and steam may be released and cause serious burns.
  1. Remove the radiator cap and reservoir tank cap.



  1. Loosen the radiator drain cock plug and 2 cylinder block drain cock plugs. Then drain the coolant.

    HINT:
    Collect the coolant in a container and dispose of it according to the regulations in your area.


    Lexus Is250, Is220D. Gse20 Ale20.4Gr-Fse Engine Control System.Sfi System.Engine Coolant Temperature Sensor  Removal



14. DISCONNECT NO. 2 VENTILATION HOSE


    Lexus Is250, Is220D. Gse20 Ale20
  1. Disconnect the ventilation hose from the cylinder head.



15. REMOVE AIR CLEANER CAP WITH AIR CLEANER HOSE


    Lexus Is250, Is220D. Gse20 Ale20
  1. Disconnect the MAF meter connector.

  1. Disconnect the clamp from the air cleaner.



    Lexus Is250, Is220D. Gse20 Ale20
  1. Disconnect the VSV hose.



    Lexus Is250, Is220D. Gse20 Ale20
  1. Disconnect the 4 clamps.

  1. Remove the hose clamp and air cleaner cap with air cleaner hose.



16. REMOVE THROTTLE BODY
  1. Disconnect the throttle motor connector.



    Lexus Is250, Is220D. Gse20 Ale20
  1. Remove the 4 bolts and disconnect the throttle body from the intake air surge tank.



    Lexus Is250, Is220D. Gse20 Ale20
  1. Disconnect the 2 water by-pass hoses from the throttle body.

  1. Remove the throttle body and gasket.



17. REMOVE INTAKE AIR SURGE TANK ASSEMBLY


    Lexus Is250, Is220D. Gse20 Ale20
  1. Disconnect the vacuum hose from the intake air surge tank.

  1. Remove the bolt and disconnect the No. 1 vacuum switching valve assembly from the intake air surge tank.



    Lexus Is250, Is220D. Gse20 Ale20
  1. Disconnect the wire harness and hose from the surge tank.



    Lexus Is250, Is220D. Gse20 Ale20
  1. Disconnect the ventilation hose from the intake air surge tank.



    Lexus Is250, Is220D. Gse20 Ale20
  1. Remove the bolt and water hose joint from the intake air surge tank.



    Lexus Is250, Is220D. Gse20 Ale20
  1. Remove the bolt and disconnect the surge tank stay.



    Lexus Is250, Is220D. Gse20 Ale20
  1. Using a 5 mm hexagon socket wrench, remove the 7 bolts, 2 nuts and gasket.



18. REMOVE INTAKE MANIFOLD
  1. Disconnect the connector for the SCV.

  1. Disconnect the SCV position sensor connector.



    Lexus Is250, Is220D. Gse20 Ale20.4Gr-Fse Engine Control System.Sfi System.Engine Coolant Temperature Sensor  Removal
  1. Remove the 4 bolts, 4 nuts, intake manifold and gasket.



19. REMOVE ENGINE COOLANT TEMPERATURE SENSOR


    Lexus Is250, Is220D. Gse20 Ale20
  1. Disconnect the engine coolant temperature sensor connector.

  1. Remove the engine coolant temperature sensor.

  1. Remove the gasket from the engine coolant temperature sensor.