SFI SYSTEM, Diagnostic DTC:P107A15

DTC Code DTC Name
P107A15 Fuel Rail Pressure Sensor (Low) Circuit Short to Battery or Open

DESCRIPTION

Refer to DTC P107A11.

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DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P107A15 Fuel Rail Pressure Sensor (Low) Circuit Short to Battery or Open The fuel pressure sensor (for low pressure side) output voltage is higher than 4.85 V for 3 seconds or more (1 trip detection logic).
  • Open or short in fuel pressure sensor (for low pressure side) circuit

  • Fuel delivery pipe (fuel pressure sensor (for low pressure side))

  • ECM

Comes on DTC stored SAE Code: P107D

Tech Tips

When this DTC is output, check the Fuel Pressure (Low) in the Data List. Enter the following menus: Powertrain / Engine / Data List / Fuel Pressure (Low).

DTC No. Fuel Pressure (Low) Malfunction
P107A15 Approximately 750 kPag or higher
  • Short in VCPF to PFL circuit

  • Open in PFL circuit

  • Open in EPFL circuit

If the Data List values is normal it may be due to a temporary recovery from the malfunction condition. Check for intermittent problems.

MONITOR DESCRIPTION

This DTC is stored if the fuel pressure sensor (for low pressure side) output voltage is out of the standard range due to an open or short in the sensor circuit.

MONITOR STRATEGY

Required Sensors/Components Fuel pressure sensor (for low pressure side)
Frequency of Operation Continuous

CONFIRMATION DRIVING PATTERN


  1. Connect the GTS to the DLC3.

  2. Turn the engine switch on (IG) and turn the GTS on.

  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

  4. Turn the engine switch off and wait for at least 30 seconds.

  5. Turn the engine switch on (IG) and turn the GTS on.

  6. Start the engine.

  7. Idle the engine for 10 seconds.

  8. Enter the following menus: Powertrain / Engine / Trouble Codes.

  9. Read the pending DTCs.

    Tech Tips


    • If a pending DTC is output, the system is malfunctioning.

    • If a pending DTC is not output, perform the following procedure.

  10. Enter the following menus: Powertrain / Engine / Utility / All Readiness.

  11. Input the DTC: P107A15.

  12. Check the DTC judgment result.

    GTS Display Description
    NORMAL
    • DTC judgment completed

    • System normal

    ABNORMAL
    • DTC judgment completed

    • System abnormal

    INCOMPLETE
    • DTC judgment not completed

    • Perform driving pattern after confirming DTC enabling conditions

    N/A
    • Unable to perform DTC judgment

    • Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

    Tech Tips


    • If the judgment result shows NORMAL, the system is normal.

    • If the judgment result shows ABNORMAL, the system has a malfunction.

    • If the judgment result shows INCOMPLETE or N/A, perform the Confirmation Driving Pattern and check the DTC judgment result again.

WIRING DIAGRAM

Refer to DTC P107A11.

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CAUTION / NOTICE / HINT

Tech Tips

Read freeze frame data using the GTS. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (FUEL PRESSURE SENSOR (FOR LOW PRESSURE SIDE) - ECM)


    1. Disconnect the fuel pressure sensor (for low 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
      D62-2 (PFL) - D1-102 (PFL) Always Below 1 Ω
      D62-3 (E2) - D1-133 (EPFL) Always Below 1 Ω
      D62-2 (PFL) or D1-102 (PFL) - Other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG
    OK
  2. CHECK TERMINAL VOLTAGE (POWER SOURCE OF FUEL PRESSURE SENSOR (FOR LOW PRESSURE SIDE))

    A01VXBAC14
    *a

    Front view of wire harness connector

    (to Fuel Pressure Sensor (for Low Pressure Side))


    1. Disconnect the fuel pressure sensor (for low 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
      D62-1 (VC) - D62-3 (E2) Engine switch on (IG) 4.75 to 5.25 V
      Result
      Proceed to
      OK
      NG

      Tech Tips

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

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    OK
    NG