Air Fuel Ratio Sensor (For Sensor 1) Removal

Engine. Lexus Gs430, Gs300. Uzs190 Grs190
3Gr-Fe Emission Control. Lexus Gs430, Gs300. Uzs190 Grs190

  1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

  2. REMOVE BATTERY

  3. REMOVE POWER STEERING ECU ASSEMBLY

  4. REMOVE BATTERY TRAY

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

  6. 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 activation.


2. 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. European models only :

    1. Disconnect the battery thermometer connector.

  1. Remove the battery insulator.

  1. Remove the battery.



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



    Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Emission Control.Emission Control System.Air Fuel Ratio Sensor (For Sensor 1)  Removal
  1. Remove the 3 bolts and disconnect the ground cable terminal.



    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Release the locks of the 2 power steering ECU assembly connectors and disconnect the connectors.

  1. Remove the power steering ECU assembly.



4. REMOVE BATTERY TRAY


Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the 2 bolts and battery tray.



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


Lexus Gs430, Gs300. Uzs190 Grs190
  1. Disconnect the sensor connector.

  1. Using SST, remove the sensor from the exhaust manifold RH.

    SST
    09224-00010


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


Lexus Gs430, Gs300. Uzs190 Grs190
  1. Disconnect the sensor connector.

  1. Using SST, remove the sensor from the exhaust manifold LH.

    SST
    09224-00010