SFI SYSTEM(w/o Canister Pump Module), Diagnostic DTC:P062712

DTC Code DTC Name
P062712 Fuel Pump "A" Control Circuit Short to Battery

DESCRIPTION

The fuel pump control ECU performs PWM (Pulse Width Modulation) control to control the fuel pump (for low pressure side) speed steplessly over a wide range.

The fuel pump control ECU controls the speed of the fuel pump (for low pressure side) by switching the current of FPU, FPV and FPW based on operation signals output from the ECM.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P062712 Fuel Pump "A" Control Circuit Short to Battery When the fuel pump control ECU operation duty ratio is 3 to 65%, the FPC terminal voltage is at a certain value or more for 3 seconds or more (1 trip detection logic).

  • Short in fuel pump control ECU circuit

  • Fuel pump control ECU

  • Wire harness or connector

  • ECM

 Does not come on DTC stored SAE Code: P0629
Related Data List
DTC No. Data List
P062712 Fuel Pump Control Duty Ratio

MONITOR DESCRIPTION

The ECM monitors the fuel pump control ECU operation signals.

When the output duty ratio of the operation signal from the ECM is 3 to 65% and the FPC terminal voltage is a certain value or more for 3 seconds or more, the ECM stores a DTC.

MONITOR STRATEGY

Required Sensors/Components Fuel pump control ECU
Frequency of Operation Continuous

CONFIRMATION DRIVING PATTERN


  1. Connect the GTS to the DLC3.

  2. Turn the ignition switch to ON.

  3. Turn the GTS on.

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

  5. Turn the ignition switch off and wait for at least 30 seconds.

  6. Start the engine and wait 10 seconds or more.

  7. Turn the GTS on.

  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: P062712.

  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 is NORMAL, the system is normal.

    • If the judgment result is ABNORMAL, the system is malfunctioning.

    • If the judgment result is INCOMPLETE, run the engine at an engine speed of 2000 rpm or more for 10 seconds or more and check the DTC judgment result again.

WIRING DIAGRAM

B0070GSE02

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. INSPECT ECM (CHECK FOR SHORT)

    B006ZHSC34
    *a

    Front view of wire harness connector

    (to Fuel Pump Control ECU)

    1. Disconnect the fuel pump control ECU connector.

    2. Turn the ignition switch to ON.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      R18-2 (FPC) - Body ground Ignition switch ON Below 1 V
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE FUEL PUMP CONTROL ECU Click here

    NG

  2. CHECK HARNESS AND CONNECTOR (FUEL PUMP CONTROL ECU - ECM)


    1. Disconnect the fuel pump control ECU 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
      R18-2 (FPC) or A24-6 (FPC) - Other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE ECM Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR