Exhaust Gas Temperature Sensor Installation

Engine. Lexus Is250, Is220D. Gse20 Ale20
2Ad-Fhv Emission Control. Lexus Is250, Is220D. Gse20 Ale20

  1. INSTALL EXHAUST GAS TEMPERATURE SENSOR (LOWER)

  2. INSTALL EXHAUST GAS TEMPERATURE SENSOR (UPPER)

  3. INSTALL EXHAUST MANIFOLD CONVERTER SUB-ASSEMBLY

  4. INSTALL FRONT EXHAUST PIPE ASSEMBLY

  5. INSTALL BATTERY TRAY

  6. INSTALL POWER STEERING ECU ASSEMBLY

  7. CHECK FOR EXHAUST GAS LEAKS

  8. INSTALL ENGINE ROOM SIDE COVER RH

  9. INSTALL COOL AIR INTAKE DUCT SEAL

  10. INSTALL NO. 1 ENGINE COVER

Exhaust Gas Temperature Sensor -- Installation



1. INSTALL EXHAUST GAS TEMPERATURE SENSOR (LOWER)


    Lexus Is250, Is220D. Gse20 Ale20.2Ad-Fhv Emission Control.Emission Control System.Exhaust Gas Temperature Sensor  Installation
  1. Temporarily install the exhaust gas temperature sensor (lower) with the 2 nuts.



    Lexus Is250, Is220D. Gse20 Ale20.2Ad-Fhv Emission Control.Emission Control System.Exhaust Gas Temperature Sensor  Installation
  1. Tighten the 2 nuts.

    Torque:
    6.4 N*m{65 kgf*cm, 57 in.*lbf}


    Lexus Is250, Is220D. Gse20 Ale20.2Ad-Fhv Emission Control.Emission Control System.Exhaust Gas Temperature Sensor  Installation
  1. Using SST, tighten the nut of the exhaust gas temperature sensor (lower).

    SST
    09023-38401
    Torque:
    30 N*m{306 kgf*cm, 22 ft.*lbf}
    HINT:
    Use a torque wrench with a fulcrum length of 30 cm (11.81 in.).


2. INSTALL EXHAUST GAS TEMPERATURE SENSOR (UPPER)


    Lexus Is250, Is220D. Gse20 Ale20.2Ad-Fhv Emission Control.Emission Control System.Exhaust Gas Temperature Sensor  Installation
  1. Temporarily install the exhaust gas temperature sensor (upper) with the 3 nuts.



    Lexus Is250, Is220D. Gse20 Ale20
  1. Tighten the 3 nuts.

    Torque:
    6.4 N*m{65 kgf*cm, 57 in.*lbf}


    Lexus Is250, Is220D. Gse20 Ale20.2Ad-Fhv Emission Control.Emission Control System.Exhaust Gas Temperature Sensor  Installation
  1. Using SST, tighten the nut of the exhaust gas temperature sensor (upper).

    SST
    09023-38401
    Torque:
    30 N*m{306 kgf*cm, 22 ft.*lbf}
    HINT:
    Use a torque wrench with a fulcrum length of 30 cm (11.81 in.).


3. INSTALL EXHAUST MANIFOLD CONVERTER SUB-ASSEMBLY
  1. Temporarily install the No. 1 manifold stay.



    Lexus Is250, Is220D. Gse20 Ale20.2Ad-Fhv Emission Control.Emission Control System.Exhaust Gas Temperature Sensor  Installation
  1. Temporarily install a new turbine outlet elbow gasket and exhaust manifold converter with the 3 nuts.



    Lexus Is250, Is220D. Gse20 Ale20.2Ad-Fhv Emission Control.Emission Control System.Exhaust Gas Temperature Sensor  Installation
  1. Temporarily install the 2 bolts and nut.



    Lexus Is250, Is220D. Gse20 Ale20.2Ad-Fhv Emission Control.Emission Control System.Exhaust Gas Temperature Sensor  Installation
  1. Tighten the 3 nuts (Pushing the manifold converter against the No. 1 manifold stay).

    Torque:
    25 N*m{255 kgf*cm, 18 ft.*lbf}


    Lexus Is250, Is220D. Gse20 Ale20.2Ad-Fhv Emission Control.Emission Control System.Exhaust Gas Temperature Sensor  Installation
  1. Tighten the 2 bolts and nut.

    Torque:
    56 N*m{571 kgf*cm, 41 ft.*lbf}


    Lexus Is250, Is220D. Gse20 Ale20.2Ad-Fhv Emission Control.Emission Control System.Exhaust Gas Temperature Sensor  Installation
  1. Temporarily install the No. 2 exhaust manifold stay with the 2 bolts and nut.



    Lexus Is250, Is220D. Gse20 Ale20
  1. Tighten the 2 bolts (Pushing the No. 2 exhaust manifold stay against the manual transmission).

    Torque:
    56 N*m{571 kgf*cm, 41 ft.*lbf}


    Lexus Is250, Is220D. Gse20 Ale20
  1. Tighten the nut.

    Torque:
    56 N*m{571 kgf*cm, 41 ft.*lbf}


    Lexus Is250, Is220D. Gse20 Ale20.2Ad-Fhv Emission Control.Emission Control System.Exhaust Gas Temperature Sensor  Installation
  1. Using pliers, slide the clip to install the No. 1 and No. 2 vacuum transmitting hose assembly.

    HINT:
    Make sure that the paint marks on the No. 1 and No. 2 vacuum transmitting hose assemblies and No. 1 and No. 2 vacuum pipes are aligned.


4. INSTALL FRONT EXHAUST PIPE ASSEMBLY


    Lexus Is250, Is220D. Gse20 Ale20
  1. Using vernier calipers, measure the free length of the compression springs.

    Minimum length:
    38.5 mm (1.516 in.)
    If the free length is less than the minimum, replace the compression spring.


    Lexus Is250, Is220D. Gse20 Ale20.2Ad-Fhv Emission Control.Emission Control System.Exhaust Gas Temperature Sensor  Installation
  1. Fully insert 2 new gaskets to the exhaust manifold converter and front exhaust pipe assembly by hand.

    NOTICE:
    1. Be careful with the installation direction of the gasket.
    2. Do not reuse the gasket.
    3. Do not damage the gasket.
    4. To ensure a proper seal, do not use the tail exhaust pipe to force the gasket onto the front exhaust pipe.
      HINT:
      Using a plastic hammer, uniformly strike the gasket so that the gasket and front exhaust pipe are properly fit.
  1. Install the front exhaust pipe assembly.



    Lexus Is250, Is220D. Gse20 Ale20.2Ad-Fhv Emission Control.Emission Control System.Exhaust Gas Temperature Sensor  Installation
  1. Install the 2 bolts and 2 compression springs.

    Torque:
    43 N*m{439 kgf*cm, 32 ft.*lbf}
    NOTICE:
    After installation, check that the clearance is almost the same at any point between the flanges of the tail exhaust pipe assembly and front exhaust pipe assembly.


    Lexus Is250, Is220D. Gse20 Ale20.2Ad-Fhv Emission Control.Emission Control System.Exhaust Gas Temperature Sensor  Installation
  1. Install the 2 bolts and 2 compression springs.

    Torque:
    43 N*m{439 kgf*cm, 32 ft.*lbf}
    NOTICE:
    After installation, check that the clearance is almost the same at any point between the flanges of the exhaust manifold converter and front exhaust pipe assembly.


5. INSTALL BATTERY TRAY


6. INSTALL POWER STEERING ECU ASSEMBLY
HINT:
(Click here)


7. CHECK FOR EXHAUST GAS LEAKS
If exhaust gas is leaking, tighten the related parts to stop the leak. Replace damaged parts as necessary.


8. INSTALL ENGINE ROOM SIDE COVER RH


    Lexus Is250, Is220D. Gse20 Ale20
  1. Install the side cover with the 2 clips.



9. INSTALL COOL AIR INTAKE DUCT SEAL


    Lexus Is250, Is220D. Gse20 Ale20
  1. Install the intake duct seal with the 11 clips.



10. INSTALL NO. 1 ENGINE COVER


    Lexus Is250, Is220D. Gse20 Ale20
  1. Install the No. 1 engine cover.