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Home >> Lexus >> 2024 >> LX 600 Premium >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (W/O Canister Pump Module) - Diagnostic Codes (4 Of 5) >> SFI SYSTEM (w/o Canister Pump Module) >> DTC P0715-31: Input/Turbine Speed Sensor "A" No Signal [12/2021 - ] >> Procedure
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DTC P0715-31: Input/Turbine Speed Sensor "A" No Signal [12/2021 - ]: Procedure

  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0715-31) 
    1. Perform the Health Check using the GTS.
    2. Read the DTCs.

      Result

      Result Proceed to
      P0715-31 and other DTCs are output A
      P0715-31 is output B

      HINT: 

      If any DTCs other than P0715-31 are output, troubleshoot those DTCs first.

    Result: 

    GO TO DTC CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [12/2021 - ] 

    Result: 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (TCM - ECM) 

    Pre-procedure1

    1. Disconnect the TCM connector.
    2. Disconnect the ECM connector.

      Procedure1

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      C36-51 (NTOE) - C38-30 (NTP) Always Below 1 Ω
      C36-51 (NTOE) or C38-30 (NTP) - Body ground and other terminals Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    4. None

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  3

  3. CLEAR DTC 

    Pre-procedure1

    1. None

      Procedure1

    2. Clear the DTCs.

      Powertrain > Engine > Clear DTCs 

      Result

      Proceed to
      NEXT

      Post-procedure1

    3. Turn the ignition switch off and wait for at least 30 seconds.

    Result: 

    NEXT 

    See step  4

  4. CHECK WHETHER DTC OUTPUT RECURS (DTC P0715-31) 

    Pre-procedure1

    1. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.

      Procedure1

    2. Read the DTCs.

      Powertrain > Engine > Trouble Codes 

      Result

      Result Proceed to
      DTCs are not output A
      P0715-31 is output B

      Post-procedure1

    3. None

    Result: 

    CHECK FOR INTERMITTENT PROBLEMS. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2021 - ] 

    Result: 

    See step  5

  5. REPLACE TCM 

    HINT: 

    Refer to REMOVAL [12/2021 - ]

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  6

  6. CLEAR DTC 

    Pre-procedure1

    1. None

      Procedure1

    2. Clear the DTCs.

      Powertrain > Engine > Clear DTCs 

      Result

      Proceed to
      NEXT

      Post-procedure1

    3. Turn the ignition switch off and wait for at least 30 seconds.

    Result: 

    NEXT 

    See step  7

  7. CHECK WHETHER DTC OUTPUT RECURS (DTC P0715-31) 

    Pre-procedure1

    1. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.

      Procedure1

    2. Read the DTCs.

      Powertrain > Engine > Trouble Codes 

      Result

      Result Proceed to
      DTCs are not output A
      P0715-31 is output B

      Post-procedure1

    3. None

    Result: 

    END 

    Result: 

    REPLACE ECM. Refer to  REMOVAL [12/2021 - ]