Air Fuel Ratio Sensor (For Sensor 1) Removal

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

  1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

  2. REMOVE COOL AIR INTAKE DUCT SEAL

  3. REMOVE ENGINE ROOM SIDE COVER LH

  4. REMOVE ENGINE ROOM COVER SIDE RH

  5. REMOVE FRONT FLOOR BRACE CENTER

  6. REMOVE NO. 1 FLOOR PANEL BRACE REAR

  7. REMOVE OXYGEN SENSOR

  8. REMOVE EXHAUST PIPE ASSEMBLY FRONT

  9. REMOVE BATTERY

  10. REMOVE POWER STEERING ECU ASSEMBLY

  11. REMOVE BATTERY TRAY

  12. REMOVE NO. 1 RELAY BLOCK COVER

  13. REMOVE NO. 4 ENGINE WIRE

  14. REMOVE ENGINE ROOM RELAY BLOCK ASSEMBLY

  15. REMOVE EXHAUST MANIFOLD SUB-ASSEMBLY LH

  16. REMOVE AIR FUEL RATIO SENSOR (for Bank 1 Sensor 1)

  17. REMOVE AIR FUEL RATIO SENSOR (BANK 2 SENSOR 1)

Air Fuel Ratio Sensor (For Sensor 1) -- Removal



1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner deployment.


2. REMOVE COOL AIR INTAKE DUCT SEAL


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



3. REMOVE ENGINE ROOM SIDE COVER LH


    Lexus Is250, Is220D. Gse20 Ale20.4Gr-Fse Emission Control.Emission Control System.Air Fuel Ratio Sensor (For Sensor 1)  Removal
  1. Remove the 5 clips and side cover.



4. REMOVE ENGINE ROOM COVER SIDE RH


    Lexus Is250, Is220D. Gse20 Ale20.4Gr-Fse Emission Control.Emission Control System.Air Fuel Ratio Sensor (For Sensor 1)  Removal
  1. Remove the 2 clips and side cover.



5. REMOVE FRONT FLOOR BRACE CENTER


    Lexus Is250, Is220D. Gse20 Ale20
  1. Remove the 4 bolts and front center floor brace .



6. REMOVE NO. 1 FLOOR PANEL BRACE REAR


    Lexus Is250, Is220D. Gse20 Ale20
  1. Remove the 4 bolts and rear No. 1 floor panel brace.



7. REMOVE OXYGEN SENSOR


    Lexus Is250, Is220D. Gse20 Ale20.4Gr-Fse Emission Control.Emission Control System.Air Fuel Ratio Sensor (For Sensor 1)  Removal
  1. Remove the grommets of the heated oxygen sensors (BANK 1, BANK 2).



    Lexus Is250, Is220D. Gse20 Ale20.4Gr-Fse Emission Control.Emission Control System.Air Fuel Ratio Sensor (For Sensor 1)  Removal
  1. Using the SST, remove a oxygen sensors (BANK 1, BANK 2).

    SST
    09224-00010


8. REMOVE EXHAUST PIPE ASSEMBLY FRONT


    Lexus Is250, Is220D. Gse20 Ale20.4Gr-Fse Emission Control.Emission Control System.Air Fuel Ratio Sensor (For Sensor 1)  Removal
  1. Remove the 4 bolts and 4 nuts.



    Lexus Is250, Is220D. Gse20 Ale20
  1. Remove the 2 bolts and 2 compression springs from the tail exhaust pipe assembly.

  1. Remove the front exhaust pipe assembly and 3 gaskets.



9. REMOVE BATTERY
  1. Disconnect the negative (-) battery cable from the battery.

  1. Disconnect the positive (+) battery cable from the battery.

  1. Remove the 2 nuts and the battery clamp.

  1. Remove the battery insulator.

  1. Remove the battery.



10. REMOVE POWER STEERING ECU ASSEMBLY
  1. Remove the No. 1 battery tray support.



    Lexus Is250, Is220D. Gse20 Ale20
  1. Remove the 3 bolts.



    Lexus Is250, Is220D. Gse20 Ale20.4Gr-Fse Emission Control.Emission Control System.Air Fuel Ratio Sensor (For Sensor 1)  Removal
  1. Release the locks of 2 power steering ECU assembly connectors (a) and (b) and disconnect the connectors.

  1. Disconnect connector (c) from the power steering ECU assembly.

  1. Remove the power steering ECU assembly.



11. REMOVE BATTERY TRAY


    Lexus Is250, Is220D. Gse20 Ale20
  1. Remove the 2 bolts and battery tray.



12. REMOVE NO. 1 RELAY BLOCK COVER


13. REMOVE NO. 4 ENGINE WIRE


14. REMOVE ENGINE ROOM RELAY BLOCK ASSEMBLY
  1. Remove the 2 bolts, nut and engine room relay block assembly.



15. REMOVE EXHAUST MANIFOLD SUB-ASSEMBLY LH


    Lexus Is250, Is220D. Gse20 Ale20.4Gr-Fse Emission Control.Emission Control System.Air Fuel Ratio Sensor (For Sensor 1)  Removal
  1. Disconnect the air fuel ratio sensor connector.

  1. Remove the 6 nuts and exhaust manifold sub-assembly LH and gasket.



16. REMOVE AIR FUEL RATIO SENSOR (for Bank 1 Sensor 1)
  1. Disconnect the sensor connector.



    Lexus Is250, Is220D. Gse20 Ale20
  1. Using SST, remove the sensor from the exhaust manifold RH.

    SST
    09224-00010


17. REMOVE AIR FUEL RATIO SENSOR (BANK 2 SENSOR 1)


    Lexus Is250, Is220D. Gse20 Ale20
  1. Using SST, remove the sensor from the exhaust manifold LH.

    SST
    09224-00010