Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM100000000VIAT
Model Year Start: 2016 Model: Sienna Prod Date Range: [12/2015 - 08/2016]
Title: 2GR-FE (ENGINE CONTROL): SFI SYSTEM: P0657; Actuator Supply Voltage Circuit / Open; 2016 MY Sienna [12/2015 - 08/2016]

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 ON.

DTC No.

DTC Detection Condition

Trouble Area

P0657

Throttle actuator power supply error

ECM

MONITOR STRATEGY

Related DTCs

P0657: Electronic throttle actuator supply voltage circuit performance

Required sensors/Components (Main)

ECM

Required sensors/Components (Related)

Throttle actuator

Frequency of operation

Once per driving cycle

Duration

-

MIL operation

Immediately

Sequence of operation

None

TYPICAL ENABLING CONDITIONS

Monitor runs whenever following DTCs are not present

None

Throttle actuator power supply voltage

7 V or higher

Ignition switch

ON to off

TYPICAL MALFUNCTION THRESHOLDS

Electric throttle actuator power supply

ON

CONFIRMATION DRIVING PATTERN

NOTICE:

After turning ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work (See page 2016 MY Sienna [12/2015 - 08/2016]; INTRODUCTION: REPAIR INSTRUCTION: PRECAUTION ).

  1. Connect the Techstream to the DLC3.
  2. Turn the ignition switch to ON and turn the Techstream on.
  3. Clear DTCs (even if no DTCs are stored, perform the clear DTC procedure) (See page 2016 MY Sienna [12/2015 - 08/2016]; 2GR-FE (ENGINE CONTROL): SFI SYSTEM: DTC CHECK / CLEAR ).
  4. Turn the ignition switch off.
  5. Turn the Techstream off.
  6. Disconnect the Techstream.
  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 ignition switch to ON.
  10. Wait 10 seconds or more.
  11. Turn the ignition switch off.
  12. Wait 15 seconds or more.
  13. Connect the Techstream to the DLC3.
  14. Turn the ignition switch to ON.
  15. Turn the Techstream on.
  16. Wait 5 seconds or more.
  17. Enter the following menus: Powertrain / Engine / Trouble Codes.
  18. Read pending DTCs.

    HINT:

    • If a pending DTC is output, the system is malfunctioning.
    • If a pending DTC is not output, perform the following procedure.
  19. Enter the following menus: Powertrain / Engine / Utility / All Readiness.
  20. Input the DTC: P0657.
  21. Check the DTC judgment result.

    Techstream 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's memory limit

    HINT:

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

  22. If the result is INCOMPLETE or N/A and no pending DTC is output, perform a universal trip and check for permanent DTCs (See page 2016 MY Sienna [12/2015 - 08/2016]; 2GR-FE (ENGINE CONTROL): SFI SYSTEM: DTC CHECK / CLEAR ).

    HINT:

    • If a permanent DTC is output, the system is malfunctioning.
    • If no permanent DTC is output, the system is normal.

CAUTION / NOTICE / HINT

NOTICE:

After turning ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work (See page 2016 MY Sienna [12/2015 - 08/2016]; INTRODUCTION: REPAIR INSTRUCTION: PRECAUTION ).

HINT:

Read freeze frame data using the Techstream. 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 DTC OUTPUT (DTC P0657)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Clear the DTCs (See page 2016 MY Sienna [12/2015 - 08/2016]; 2GR-FE (ENGINE CONTROL): SFI SYSTEM: DTC CHECK / CLEAR ).

(e) Turn the ignition switch off.

(f) Turn the Techstream off.

(g) Disconnect the Techstream.

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

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

(j) Turn the ignition switch to ON.

(k) Wait 10 seconds or more.

(l) Turn the ignition switch off.

(m) Wait 15 seconds or more.

(n) Connect the Techstream to the DLC3.

(o) Turn the ignition switch to ON.

(p) Turn the Techstream on.

(q) Wait 5 seconds or more.

(r) Enter the following menus: Powertrain / Engine / Trouble Codes.

(s) Check for DTCs.

Result

Result

Proceed to

DTC is not output

A

DTC P0657 is output

B
A

CHECK FOR INTERMITTENT PROBLEMS

B

REPLACE ECM