LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2017 >> IS 300 F Sport >> Repair and Diagnosis >> External Pages >> Different car >> Section 18 (Engine Intake / Exhaust System (8AR-FTS) - Service Information) >> Turbocharger >> On-Vehicle Inspection [08/2015 - ] >> Procedure

On-Vehicle Inspection [08/2015 - ]: Procedure

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2024 Lexus IS 300, 2023 Lexus IS 300, 2022 Lexus IS 300, 2021 Lexus IS 300, and 2020 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.
  1. VISUALLY INSPECT HOSES, CONNECTIONS AND GASKETS 
    1. Check that the hoses and gaskets are not cracked or damaged, and that there are no air or oil leaks from connections.

      HINT: 

      Cracked hoses and gaskets or loose connections may cause the engine to run improperly or stall.

  2. INSPECT TURBOCHARGER SUB-ASSEMBLY 
    NOTE:

    Perform this procedure in a safe location with another person.

    1. Start the engine and warm it up.
    2. Connect the GTS to the DLC3.
    3. Turn the engine switch on (IG).
    4. Enter the following menus: Powertrain / Engine / Data List / Boost Pressure Sensor

      Powertrain > Engine > Data List 

      Tester Display
      Boost Pressure Sensor
    5. Fully accelerate the vehicle with the shift lever in 2nd and measure the boost pressure when the engine speed is 4000 rpm (approximately 60 km/h (37 mph)).

      Standard Pressure

      120 kPa (1.2 kgf/cm2 , 17 psi)

      If the result is not as specified, check the waste gate valve actuator with bracket assembly and turbocharger sub-assembly.

  3. INSPECT TURBINE SHAFT 
    1. Remove the inlet compressor elbow.

      See step  2

    2. Rotate the compressor wheel by hand as shown in the illustration, and check that the compressor wheel rotates smoothly.
      NOTE:

      If the compressor wheel does not rotate smoothly and there is interference between the turbine wheel and turbine housing with valve sub-assembly, replace the compressor housing with bearing sub-assembly and turbine housing with valve sub-assembly at the same time.

      HINT: 

      If the compressor wheel does not rotate smoothly, replace the compressor housing with bearing sub-assembly.

      GTY521631Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Install the inlet compressor elbow.

      See step  3

  4. INSPECT WASTE GATE VALVE ACTUATOR WITH BRACKET ASSEMBLY 
    1. Using a vacuum pump, apply a vacuum of 35 +/- 4.0 kPa (263 +/- 30 mmHg, 10.3 +/- 1.18 in. Hg) to the diaphragm chamber and check that the waste gate valve actuator link moves as shown in the illustration through the exhaust heat insulator check window.

      OK

      The waste gate valve actuator link moves as shown in the illustration.

      NOTE:

      Do not apply a vacuum of 65 kPa (488 mmHg, 19.2 in. Hg) or more to the waste gate valve actuator with bracket assembly as doing so may damage the diaphragm.

      HINT: 

      If the result is not as specified, check the waste gate valve actuator with bracket assembly and turbocharger sub-assembly.

      GTY637516Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Waste Gate Link
      *b Link Position When Vacuum of 35 +/- 4.0 kPa (263 +/- 30 mmHg, 10.3 +/- 1.18 in. Hg) Applied
      *c Link Position When No Vacuum Applied 0 kPa (0 mmHg, 0 in. Hg)
scientia non olet · About LEMON Manuals