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Home >> Lexus >> 2024 >> RX 500h >> Repair and Diagnosis >> External Pages >> Different car >> Section 26 (Engine Control System - Diagnostic Codes (P0087-P0110)) >> SFI System >> DTC P0105-15: Manifold Absolute Pressure / Barometric Pressure Sensor Circuit Short to Battery or Open [10/2022 - 08/2023] >> Procedure

DTC P0105-15: Manifold Absolute Pressure / Barometric Pressure Sensor Circuit Short to Battery or Open [10/2022 - 08/2023]: Procedure

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  1. CHECK HARNESS AND CONNECTOR 

    HINT: 

    Make sure that the connector is properly connected. If it is not, securely connect it and check for DTCs again.

    Pre-procedure1

    • Disconnect the manifold absolute pressure sensor connector.
    • Turn the ignition switch to ON.
    • Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition Result
      B75-3 (VC) - B75-1 (E2) Ignition switch ON 4.75 to 5.25 V V
      B75-2 (PIM) - B75-1 (E2) Ignition switch ON 0.95 to 4.25 V V

    Post-procedure1

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

    Pre-procedure2

    • None.
    • Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition Result
      B75-1 (E2) - Body ground Ignition switch off Below 1 Ω Ω
      B75-3 (VC) - B75-2 (PIM) Ignition switch off 171 to 189 kΩ

      Result

      Proceed to
      OK
      NG

    Post-procedure2

    • None.

    Result: 

    OK 

    REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR. Refer to  REMOVAL [10/2022 - ] 

    Result: 

    NG 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (MANIFOLD ABSOLUTE PRESSURE SENSOR - ECM) 

    Pre-procedure1

    • Disconnect the manifold absolute pressure sensor connector.
    • Disconnect the ECM connector.
    • Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition Result
      B75-1 (E2) - B28-119 (EPIM) Always Below 1 Ω Ω
      B75-2 (PIM) - B28-120 (PIM) Always Below 1 Ω Ω
      B75-2 (PIM) or B28-120 (PIM) - Other terminals Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Post-procedure1

    • None.

    Result: 

    OK 

    REPLACE ECM. Refer to  REMOVAL [10/2022 - 08/2023] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR