SFI SYSTEM(w/o EGR System), Diagnostic DTC:P0657

DTC Code DTC Name
P0657 Actuator Supply Voltage Circuit / Open

MONITOR DESCRIPTION

The ECM monitors the output voltage to the throttle actuator. This self-check ensures that the ECM is functioning properly. The output voltage is usually 0 V when the power switch is turned off. If the output voltage is higher than 7 V when the power switch is turned off, the ECM will illuminate the MIL and store this DTC when the power switch is turned on (IG).

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P0657 Actuator Supply Voltage Circuit / Open Throttle actuator power supply error (1 trip detection logic). ECM Comes on DTC stored

MONITOR STRATEGY

Required Sensors/Components ECM
Frequency of Operation Once per driving cycle

TYPICAL ENABLING CONDITIONS

Electric throttle actuator power supply voltage 7 V or higher

TYPICAL MALFUNCTION THRESHOLDS

Last trip condition Met
Command to electronic throttle actuator power On

CONFIRMATION DRIVING PATTERN


  1. Connect the GTS to the DLC3.

  2. Turn the power 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 GTS off.

  5. Turn the power switch off.

  6. Disconnect the GTS.

  7. Disconnect the cable from the negative (-) auxiliary battery terminal and wait for 1 minute.

  8. Connect the cable to the negative (-) auxiliary battery terminal.

  9. Turn the power switch on (IG).

  10. Wait 10 seconds or more.

  11. Turn the power switch off.

  12. Wait 15 seconds or more.

  13. Connect the GTS to the DLC3.

  14. Turn the power switch on (IG) and turn the GTS on.

  15. Wait 5 seconds or more.

  16. Enter the following menus: Powertrain / Engine and ECT/ Trouble Codes.

  17. 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.

  18. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.

  19. Input the DTC: P0657.

  20. 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.

CAUTION / NOTICE / HINT

Note

After turning power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.

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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. READ OUTPUT DTC (DTC P0657)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Clear the DTCs.

      Click here


      Powertrain > Engine and ECT > Clear DTCs
    5. Turn the GTS off.

    6. Turn the power switch off.

    7. Disconnect the GTS.

    8. Disconnect the cable from the negative (-) auxiliary battery terminal and wait for 1 minute.

    9. Connect the cable to the negative (-) auxiliary battery terminal.

    10. Turn the power switch on (IG).

    11. Wait 10 seconds or more.

    12. Turn the power switch off.

    13. Wait 15 seconds or more.

    14. Connect the GTS to the DLC3.

    15. Turn the power switch on (IG) and turn the GTS on.

    16. Wait 5 seconds or more.

    17. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

    18. Read the DTCs.


      Powertrain > Engine and ECT > Trouble Codes
      Result
      Result Proceed to
      DTCs are not output A
      DTC P0657 is output B

    A
    B