LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2021 >> LS 500 Base, RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Diagnostic Codes (02 Of 14) >> SFI System >> DTC P0033-12: Turbocharger / Supercharger Bypass Valve "A" Control Circuit Short to Battery; DTC P00C0-12: Turbocharger/Supercharger Bypass Valve "B" Control Circuit Short to Battery [12/2017 - ] >> Procedure

DTC P0033-12: Turbocharger / Supercharger Bypass Valve "A" Control Circuit Short to Battery; DTC P00C0-12: Turbocharger/Supercharger Bypass Valve "B" Control Circuit Short to Battery [12/2017 - ]: Procedure

  1. INSPECT AIR BY-PASS VALVE ASSEMBLY 
    1. Inspect the air by-pass valve assembly.

      Refer to INSPECTION [12/2017 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE AIR BY-PASS VALVE ASSEMBLY. Refer to  REMOVAL [12/2017 - ] 

    Result: 

    OK 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (AIR BY-PASS VALVE ASSEMBLY - ECM) 
    1. Disconnect the air by-pass valve assembly connector.
    2. Disconnect the ECM connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      D36-2 (ABV) or D1-30 (ABV) - Other terminals Always 10 kΩ or higher
      D38-2 (ABV2) or D1-29 (ABV2) - Other terminals Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  3

  3. CLEAR DTC 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the Techstream on.
    4. Clear the DTCs.

      Powertrain > Engine > Clear DTCs 

    5. Turn the engine switch off and wait for at least 30 seconds.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  4

  4. CHECK WHETHER DTC OUTPUT RECURS (DTC P0033-12 OR P00C0-12) 
    1. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
    2. Enter the following menus: Powertrain / Engine / Utility / All Readiness.

      Powertrain > Engine > Utility 

      Tester Display
      All Readiness
    3. Input the DTC: P0033-12 or P00C0-12.
    4. Check the DTC judgment result.

      Result

      Result Proceed to
      NORMAL
      (DTCs are not output)
      A
      ABNORMAL
      (DTC P0033-12 or P00C0-12 is output)
      B

    Result: 

    CHECK FOR INTERMITTENT PROBLEMS. Refer to  CHECK FOR INTERMITTENT PROBLEMS [12/2017 - ] 

    Result: 

    REPLACE ECM. Refer to  REMOVAL [12/2017 - 09/2018]  , or refer to  REMOVAL [09/2018 - 10/2020]  , or refer to  REMOVAL [10/2020 - 10/2022]  , or refer to  REMOVAL [10/2022 - 10/2023]  , or refer to  REMOVAL [10/2023 - ]