SFI SYSTEM(w/ Canister Pump Module), 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 engine switch is turned off. If the output voltage is higher than 7 V when the engine switch is turned off, the ECM illuminates the MIL and stores the DTC when the engine switch is turned on (IG).

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

P0657

Actuator Supply Voltage Circuit / Open

A 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

Throttle actuator power supply voltage

7 V or higher

TYPICAL MALFUNCTION THRESHOLDS

Last trip condition

Met

Electronic throttle actuator power supply

On

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 GTS off.

  5. Turn the engine switch off.

  6. Disconnect the GTS.

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

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

  9. Turn the engine switch on (IG).

  10. Wait 10 seconds or more.

  11. Turn the engine switch off.

  12. Wait 15 seconds or more.

  13. Connect the GTS to the DLC3.

  14. Turn the engine 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.

    Tip:

    • 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
    Tip:

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

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

CAUTION / NOTICE / HINT

Tip:

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 engine switch on (IG).

    3. Turn the GTS on.

    4. Clear the DTCs.

      Click here

      Powertrain > Engine and ECT > Clear DTCs

    5. Turn the engine switch off.

    6. Turn the GTS off.

    7. Disconnect the GTS.

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

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

    10. Turn the engine switch on (IG).

    11. Wait 10 seconds or more.

    12. Turn the engine switch off.

    13. Wait 15 seconds or more.

    14. Connect the GTS to the DLC3.

    15. Turn the engine switch on (IG).

    16. Turn the GTS on.

    17. Wait 5 seconds or more.

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

    19. Read the DTCs.

      Powertrain > Engine and ECT > Trouble Codes

      Result

      Result

      Proceed to

      DTC is not output

      A

      DTC P0657 is output

      B
    A

    CHECK FOR INTERMITTENT PROBLEMS

    Click here

    B

    REPLACE ECM

    Click here