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Home >> Lexus >> 2023 >> LX 600 Luxury >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (W/ Canister Pump Module) - Diagnostic Codes (6 Of 9) >> SFI SYSTEM (w/ Canister Pump Module) >> DTC P107A-11: Fuel Rail Pressure Sensor (Low) / Fuel Rail Pressure Sensor "B" Circuit Short to Ground [12/2021 - ] >> Procedure
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DTC P107A-11: Fuel Rail Pressure Sensor (Low) / Fuel Rail Pressure Sensor "B" Circuit Short to Ground [12/2021 - ]: Procedure

  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 No. 2 fuel pressure sensor (for low pressure side) 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
      G4-1 (VC) - G4-3 (E2) Ignition switch ON 4.5 to 5.5 V
      G4-2 (PFL) - G4-3 (E2) Ignition switch ON 4.4 to 5.35 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
      G4-1 (VC) - G4-2 (PFL) Ignition switch off 171 to 189 kΩ

      HINT: 

      Perform "Inspection After Repair" after replacing the No. 2 fuel pressure sensor (for low pressure side).

      Refer to INITIALIZATION [12/2021 - ]

      Result

      Proceed to
      OK
      NG

    Post-procedure2

    • None

    Result: 

    OK 

    REPLACE NO. 2 FUEL PRESSURE SENSOR (FOR LOW PRESSURE SIDE). Refer to  REMOVAL [12/2021 - ] 

    Result: 

    NG 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (NO. 2 FUEL PRESSURE SENSOR (FOR LOW PRESSURE SIDE) - ECM) 

    Pre-procedure1

    • Disconnect the No. 2 fuel pressure sensor (for low pressure side) connector.
    • Disconnect the ECM connector.
    • Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G4-1 (VC) - C37-101 (VCPF) Always Below 1 Ω
      G4-2 (PFL) or C37-96 (PFL) - Body ground and other terminals Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Post-procedure1

    • None

    Result: 

    OK 

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

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR