Dtc P2111 Throttle Actuator Control System - Stuck Open

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

SYSTEM DESCRIPTION

MONITOR DESCRIPTION

CONFIRMATION DRIVING PATTERN

FAIL-SAFE

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P2111 OR P2112)

INSPECT THROTTLE BODY WITH MOTOR ASSEMBLY (VISUALLY CHECK THROTTLE VALVE)

READ VALUE USING INTELLIGENT TESTER (THROTTLE POSITION)

REPAIR OR REPLACE HARNESS OR CONNECTOR

REPLACE THROTTLE BODY WITH MOTOR ASSEMBLY

CHECK WHETHER DTC OUTPUT RECURS (DTC P2111 OR P2112)

DTC P2111 Throttle Actuator Control System - Stuck Open

DTC P2112 Throttle Actuator Control System - Stuck Closed


SYSTEM DESCRIPTION

The throttle actuator is operated by the ECM, and opens and closes the throttle valve using gears. The opening angle of the throttle valve is detected by the throttle position sensor, which is mounted on the throttle body with motor assembly. The throttle position sensor provides feedback to the ECM. This feedback allows the ECM to appropriately control the throttle actuator and monitor the throttle opening angle as the ECM responds to driver inputs.

HINT:
This ETCS (Electronic Throttle Control System) does not use a throttle cable.

DTC Code
DTC Detection Condition
Trouble Area
P2111
The ECM signals the throttle actuator to close, but the valve is stuck (1 trip detection logic).
  1. Throttle actuator
  2. Throttle body with motor assembly
  3. Throttle valve
  4. ECM
  5. Wire harness or connector
P2112
The ECM signals the throttle actuator to open, but the valve is stuck (1 trip detection logic).
  1. Throttle actuator
  2. Throttle body with motor assembly
  3. Throttle valve
  4. ECM
  5. Wire harness or connector

MONITOR DESCRIPTION

The ECM determines that there is a malfunction in the ETCS when the throttle valve remains at a fixed angle despite a high drive current from the ECM. The ECM illuminates the MIL and stores a DTC.
If the malfunction is not repaired successfully, a DTC is stored when the accelerator pedal is fully depressed and released quickly (to fully open and close the throttle valve) after the engine is next started.

CONFIRMATION DRIVING PATTERN


Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.1Gr-Fe Engine Control.Sfi System. Dtc P2111 Throttle Actuator Control System - Stuck Open

  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 wait for at least 30 seconds.
  5. Turn the ignition switch to ON and turn the tester on [A].
  6. Start the engine and fully depress and release the accelerator pedal quickly (to fully open and close the throttle valve).
  7. Enter the following menus: Powertrain / Engine and ECT / DTC [B].
  8. 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.
  9. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
  10. Input the DTC: P2111 or P2112.
  11. 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.
  12. If the judgment result shows INCOMPLETE or N/A, perform steps [A] through [B] again and, if necessary, drive the vehicle for a period of time.

FAIL-SAFE

When either of these DTCs, as well as other DTCs relating to ETCS (Electronic Throttle Control System) malfunctions, is stored, the ECM enters fail-safe mode. During fail-safe mode, the ECM cuts the current to the throttle actuator, and the throttle valve is returned to a 6° throttle angle by the return spring. The ECM then adjusts the engine output by controlling the fuel injection (intermittent fuel-cut) and ignition timing, in accordance with the accelerator pedal opening angle, to allow the vehicle to continue running at a minimal speed. If the accelerator pedal is depressed firmly and gently, the vehicle can be driven slowly.
Fail-safe mode continues until a pass condition is detected, and the ignition switch is then turned off.

WIRING DIAGRAM

Refer to DTC P2102 (HILUX_TGN26 RM000000PFU0OYX_07.html).

INSPECTION PROCEDURE

HINT:
  1. 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.
  2. Refer to "Data List / Active Test" [Throttle Position Command, Throttle Position No. 1, Throttle Motor Current, Throttle Motor Duty (Open), Throttle Motor Duty (Close)] (HILUX_TGN26 RM000000PDN0LVX.html).
1.CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P2111 OR P2112)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the tester on.

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

  1. Read the DTCs.

    Result
    Result
    		Proceed to
    P2111 or P2112 is output
    		A
    P2111 or P2112 and other DTCs are output
    		B
    HINT:
    If any DTCs other than P2111 or P2112 are output, troubleshoot those DTCs first.


B
GO TO DTC CHART (HILUX_TGN26 RM000002ZSO00OX.html)
A


2.INSPECT THROTTLE BODY WITH MOTOR ASSEMBLY (VISUALLY CHECK THROTTLE VALVE)

  1. Check for contamination between the throttle valve and housing. If necessary, clean the throttle body with motor assembly. Also, check that the throttle valve moves smoothly.

    OK:
    Throttle valve is not contaminated with foreign objects and moves smoothly.


NG
Go to step 5
OK


3.READ VALUE USING INTELLIGENT TESTER (THROTTLE POSITION)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the tester on.

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

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

  1. Turn the ignition switch to ON.

  1. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Throttle Position No. 1, Throttle Position No. 2 and Throttle Position Command.

  1. Check the values displayed on the tester while wiggling the ECM wire harness.

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

  1. Check for DTCs.

    Result
    Result
    		Proceed to
    Value in Data List changes when wire harness is wiggled, or DTC is output
    		A
    Other than above
    		B


B
Go to step 6
A


4.REPAIR OR REPLACE HARNESS OR CONNECTOR

  1. As the DTC was stored due to a change in the contact resistance of the connector, repair or replace the wire harness or connector (HILUX_TGN26 RM000004QR6001X.html).


NEXT

END

5.REPLACE THROTTLE BODY WITH MOTOR ASSEMBLY

  1. Replace the throttle body with motor assembly (HILUX_TGN26 RM000000VWO02AX.html).


NEXT


6.CHECK WHETHER DTC OUTPUT RECURS (DTC P2111 OR P2112)

  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 wait for at least 30 seconds.

  1. Start the engine.

  1. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.

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

  1. Read the DTCs.

    Result
    Result
    		Proceed to
    DTC is not output
    		A
    P2111 or P2112 is output
    		B


B
REPLACE ECM (HILUX_TGN26 RM000000VW202KX.html)
A

END