SFI SYSTEM(w/ GPF), Diagnostic DTC:P107A11

DTC Code DTC Name
P107A11 Fuel Rail Pressure Sensor (Low) Circuit Short to Ground

DESCRIPTION

The fuel pressure sensor (low pressure side) replaces the fuel pressure with electrical signals and outputs them to the ECM. The ECM controls the optimal fuel pressure for the operation conditions to reduce the fuel pump power consumption and improve fuel economy.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P107A11 Fuel Rail Pressure Sensor (Low) Circuit Short to Ground Open or short in fuel pressure sensor (for low pressure side) circuit for 3 seconds or more (1 trip detection logic).

  • Open or short in fuel pressure sensor (for low pressure side) circuit

  • Fuel pressure sensor (for low pressure side)

  • ECM

 Comes on DTC stored SAE: P107C

Tech Tips

When a DTC is output, check the Data List item "Fuel Pressure (Low)" using the GTS.

Click here

DTC No. Fuel Pressure (Low) Malfunction
P107A11 Approximately 0 kPag

  • PFL, EPFL circuit short

  • VCPF circuit open

If the Data List displays a normal value, the normal value may be due to a temporary recovery from the malfunction condition. Check for intermittent problems.

MONITOR DESCRIPTION

These DTCs are 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 [A].

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

  9. Read the pending DTCs [B].

    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: P107A11.

  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

    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, perform steps [A] and [B] again.

WIRING DIAGRAM

B008GKNE03
*a VCPF
*b PFL
*c EPFL
*d Fuel Pressure Sensor (for Low Pressure Side)

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 (ECM - FUEL PRESSURE SENSOR (FOR LOW PRESSURE SIDE))


    1. Disconnect the ECM connector.

    2. Disconnect the fuel pressure sensor (for low pressure side) connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      C20-134 (VCPF) - C22-1 (VC) Always Below 1 Ω
      C20-134 (VCPF) or C22-1 (VC) - body ground and other terminals Always 10 kΩ or higher
      C20-102 (PFL) or C22-2 (PFL) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. INSPECT ECM (VC VOLTAGE)


    1. B008GKUC70
      *a

      Front view of wire harness connector

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

      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
      C22-1 (VC) - C22-3 (E2) Engine switch on (IG) 4.5 to 5.5 V
      C22-2 (PEL) - C22-3 (E2) Engine switch on (IG) 3.0 to 5.0 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 Switch Condition Specified Condition
      C22-1 (VC) - C22-2 (PEL) Engine switch off 171 to 189 kΩ
      C22-3 (E2) - Body ground Always Below 1 Ω

      Tech Tips

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

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE FUEL DELIVERY PIPE SUB-ASSEMBLY (FUEL PRESSURE SENSOR (FOR LOW PRESSURE SIDE)) Click here

    NG

    REPLACE ECM Click here