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Home >> Subaru >> 2019 >> BRZ Premium >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostics) (1 Of 3) >> EFI System (FA20) >> DTC P0192: Fuel Rail Pressure Sensor Circuit Low Input >> Description of functions >> Inspection steps

Inspection steps

  1. Data monitor check
    1. Connect the SSM4 to the DLC3.
    2. Turn the ignition switch to ON.
    3. Follow the SSM4 on-screen instructions to clear the DTCs.
    4. Turn the ignition switch to OFF, and wait for 30 seconds.
    5. Start the engine.
    6. Use the Subaru Select Monitor or the general scan tool to read the [Fuel Rail Pressure A] value.
    STANDARD VALUE SPECIFICATION

    Item name Standard value
    Actual fuel pressure 1 0MPa

    NG: Inspection for problems that do not normally occur

    OK: Go to the next step

  2. Wiring harness and connector check
    1. Turn the ignition switch to OFF.
    2. Disconnect the connectors from the engine control computer.
    3. Disconnect the connector from the fuel pressure sensor.
    4. Measure the resistance between the engine control computer connector and chassis ground.
    STANDARD VALUE SPECIFICATION

    Measuring terminal Result
    A34-7 (FUEL P2) - Chassis ground 10 kΩ or more
    C46 - 1 (VOUT2) - Chassis ground 10 kΩ or more

    NG: Repair or replacement of wiring harness or connector

    OK: Go to the next step

    Replacement of the fuel pressure sensor (Refer to FUEL PRESSURE SENSOR (FA20) )

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