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Home >> Lexus >> 2019 >> ES 350 Luxury >> Repair and Diagnosis >> External Pages >> Different car >> Section 146 (Engine Control System (A25A-FKS) - Diagnostic Codes (04 Of 12)) >> SFI System >> DTC P0190-11: Fuel Rail Pressure Sensor "A" Circuit Short to Ground [08/2021 - ] >> Procedure

DTC P0190-11: Fuel Rail Pressure Sensor "A" Circuit Short to Ground [08/2021 - ]: Procedure

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  1. CHECK HARNESS AND CONNECTOR 
    GTY946828Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *a Front view of wire harness connector
    (to Fuel Pressure Sensor (for High Pressure Side))

    HINT: 

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

    1. Disconnect the fuel pressure sensor (for high pressure side) connector.
    2. Turn the engine switch on (IG).
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      F2-1 (VC) - F2-2 (E2) Engine switch on (IG) 4.75 to 5.25 V
      F2-3 (PR) - F2-2 (E2) Engine switch on (IG) 3.0 to 5.25 V
    4. Turn the engine switch off and wait for at least 30 seconds.
    5. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      F2-1 (VC) - F2-3 (PR) Engine switch off 171 to 189 kΩ

      HINT: 

      Perform "Inspection After Repair" after replacing the fuel pressure sensor (for high pressure side).

      Refer to INITIALIZATION [08/2020 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE FUEL PRESSURE SENSOR (FOR HIGH PRESSURE SIDE). Refer to  REMOVAL [08/2021 - 09/2022]  , or refer to  REMOVAL [09/2022 - ] 

    Result: 

    NG 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (FUEL PRESSURE SENSOR (FOR HIGH PRESSURE SIDE) - ECM) 
    1. Disconnect the fuel pressure sensor (for high pressure side) 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
      F2-1 (VC) - C77-98 (VCPR) Always Below 1 Ω
      F2-3 (PR) or C77-97 (PR) - Body ground and other terminals Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE ECM. Refer to  REMOVAL [08/2021 - 09/2022]  , or refer to  REMOVAL [09/2022 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

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