Dtc P0657 Actuator Supply Voltage Circuit / Open

Engine Hybrid System. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25
1Gr-Fe Engine Control. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25

DESCRIPTION

CONFIRMATION DRIVING PATTERN

INSPECTION PROCEDURE

CHECK FOR DTC

DTC P0657 Actuator Supply Voltage Circuit / Open


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 ignition switch is turned off. If the output voltage is higher than 7 V when the ignition switch is turned off, the ECM will illuminate the MIL and store a DTC when the ignition switch is turned to ON.

DTC Code
DTC Detection Condition
Trouble Area
P0657
A throttle actuator power supply error (1 trip detection logic).
ECM

CONFIRMATION DRIVING PATTERN

  1. Connect the intelligent tester to the DLC3.
  2. Turn the ignition switch to ON and turn the tester on.
  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC operation).
  4. Turn the ignition switch off and turn the tester off.
  5. Disconnect the cable from the negative (-) battery terminal and wait for 1 minute.
  6. Connect the cable to the negative (-) battery terminal.
  7. Turn the ignition switch to ON.
  8. Wait 10 seconds or more.
  9. Turn the ignition switch off and wait 15 seconds or more.
  10. Turn the ignition switch to ON and turn the tester on.
  11. Wait 5 seconds or more.
  12. Enter the following menus: Powertrain / Engine and ECT / DTC.
  13. Read the pending DTCs.
    HINT:
    1. If a pending DTC is output, the system is malfunctioning.
    2. If a pending DTC is not output, perform the following procedure.
  14. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
  15. Input the DTC: P0657.
  16. Check the DTC judgment result.

    Tester Display
    		Description
    NORMAL
    1. DTC judgment completed
    2. System normal
    ABNORMAL
    1. DTC judgment completed
    2. System abnormal
    INCOMPLETE
    1. DTC judgment not completed
    2. Perform driving pattern after confirming DTC enabling conditions
    N/A
    1. Unable to perform DTC judgment
    2. Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit
    HINT:
    1. If the judgment result shows NORMAL, the system is normal.
    2. If the judgment result shows ABNORMAL, the system has a malfunction.
    3. If the judgment result shows INCOMPLETE or N/A, perform the Confirmation Driving Pattern and check the DTC judgment result again.

INSPECTION PROCEDURE

HINT:
Read freeze frame data using the intelligent tester. Freeze frame data records the engine condition when malfunctions are detected. 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.
1.CHECK FOR DTC

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to ON and turn the tester on.

  1. Clear the DTCs (HILUX_TGN26 RM000000PDK0X5X.html).

  1. Turn the ignition switch off and turn the tester off.

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

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

  1. Turn the ignition switch to ON.

  1. Wait 10 seconds or more.

  1. Turn the ignition switch off.

  1. Wait 15 seconds or more.

  1. Turn the ignition switch to ON and turn the intelligent tester on.

  1. Wait 5 seconds or more.

  1. Enter the following menus: Powertrain / Engine and ECT / DTC.

  1. Check for DTCs.

    OK:
    P0657 is not output.


NG
REPLACE ECM (HILUX_TGN26 RM000000VW202KX.html)
OK

CHECK FOR INTERMITTENT PROBLEMS (HILUX_TGN26 RM000000PDQ0TSX.html)