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Home >> Lexus >> 2024 >> RC 350 Base, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 29 (Engine Control System (8AR-FTS) - Diagnostic Codes (03 Of 10)) >> SFI System >> DTC P0190-15: Fuel Rail Pressure Sensor "A" Circuit Short to Battery or Open [10/2015 - ] >> Procedure

DTC P0190-15: Fuel Rail Pressure Sensor "A" Circuit Short to Battery or Open [10/2015 - ]: Procedure

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  1. 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
      E2-3 (PR) - F67-103 (PR) Always Below 1 Ω
      E2-2 (E2) - F67-135 (EPR) Always Below 1 Ω
      E2-3 (PR) or F67-103 (PR) - Other terminals Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  2

  2. CHECK TERMINAL VOLTAGE (POWER SOURCE OF FUEL PRESSURE SENSOR (FOR HIGH PRESSURE SIDE)) 
    GTY677765Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *a Front view of wire harness connector
    (to Fuel Pressure Sensor (for High Pressure Side))
    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
      E2-1 (VC) - E2-2 (E2) Engine switch on (IG) 4.75 to 5.25 V

      Result

      Proceed to
      OK
      NG

      HINT: 

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

      Refer to INITIALIZATION [10/2015 - 10/2018] , or refer to INITIALIZATION [10/2018 - 11/2019] , or refer to INITIALIZATION [11/2019 - ]

    Result: 

    OK 

    REPLACE FUEL DELIVERY PIPE SUB-ASSEMBLY (FUEL PRESSURE SENSOR (FOR HIGH PRESSURE SIDE)). Refer to  REMOVAL [10/2015 - ] 

    Result: 

    NG 

    REPLACE ECM. Refer to  REMOVAL [10/2015 - ]