- Throttle actuator
- Throttle body with motor assembly
- Throttle valve
- Wire harness or connector
- ECM
| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM100000000VIAV |
| Model Year Start: 2016 | Model: Sienna | Prod Date Range: [12/2015 - 08/2016] |
| Title: 2GR-FE (ENGINE CONTROL): SFI SYSTEM: P2111,P2112; Throttle Actuator Control System - Stuck Open; 2016 MY Sienna [12/2015 - 08/2016] | ||
|
DTC |
P2111 |
Throttle Actuator Control System - Stuck Open |
|
DTC |
P2112 |
Throttle Actuator Control System - Stuck Closed |
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 so that the ECM can control the throttle actuator (throttle valve) approximately in response to driver inputs.
HINT:
This electronic throttle control system does not use a throttle cable.
|
DTC No. |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
P2111 |
The ECM signals the throttle actuator to close, but the actuator is stuck (1 trip detection logic) |
|
|
P2112 |
The ECM signals the throttle actuator to open, but the actuator is stuck (1 trip detection logic) |
|
MONITOR DESCRIPTION
The ECM determines that there is a malfunction in the electronic throttle control system when the throttle valve remains at the 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.
MONITOR STRATEGY
|
Related DTCs |
P2111: Throttle actuator stuck open P2112: Throttle actuator stuck closed |
|
Required Sensors / Components (Main) |
Throttle actuator (throttle body with motor assembly) |
|
Required Sensors / Components (Related) |
- |
|
Frequency of Operation |
Continuous |
|
Duration |
0.5 seconds |
|
MIL Operation |
Immediately |
|
Sequence of Operation |
None |
TYPICAL ENABLING CONDITIONS
All
|
Monitor runs whenever following DTCs are not present |
None |
P2111 (Throttle Actuator Stuck Open)
|
All of the following conditions are met: |
- |
|
System guard* judge condition |
ON |
|
Throttle actuator current |
2 A or more |
|
Duty-cycle to close throttle |
80% or more |
P2112 (Throttle Actuator Stuck Closed)
|
All of the following conditions are met: |
- |
|
System guard* judge condition |
ON |
|
Throttle actuator current |
2 A or more |
|
Duty-cycle to open throttle |
80% or more |
|
*: System guard is ON when the following conditions set: |
- |
|
Throttle actuator |
ON |
|
Throttle actuator duty calculation |
Executing |
|
Throttle position sensor fail |
Not detected |
|
Throttle actuator current-cut operation |
Not executing |
|
Throttle actuator power supply |
4 V or higher |
|
Throttle actuator fail |
Not detected |
TYPICAL MALFUNCTION THRESHOLDS
P2111: Throttle Actuator Stuck Open
|
Throttle position sensor voltage |
No change |
P2112: Throttle Actuator Stuck Closed
|
Throttle position sensor voltage |
No change |
CONFIRMATION DRIVING PATTERN
- Connect the Techstream to the DLC3.
- Turn the ignition switch to ON and turn the Techstream on.
-
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](/t3Portal/stylegraphics/info.gif)
).
- Turn the ignition switch off and wait for at least 30 seconds.
- Turn the ignition switch to ON and turn the Techstream on [A].
- Start the engine and fully depress and release the accelerator pedal quickly (to fully open and close the throttle valve).
- Enter the following menus: Powertrain / Engine / Trouble Codes [B].
-
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.
- Enter the following menus: Powertrain / Engine / Utility / All Readiness.
- Input the DTC: P2111 or P2112.
-
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.
-
If the test result is INCOMPLETE or N/A and no pending DTC is output, perform a universal trip and check for permanent DTCs (See page
).
HINT:
- If a permanent DTC is output, the system is malfunctioning.
- If no permanent DTC is output, the system is normal.
FAIL-SAFE
When either of these DTCs, or other DTCs relating to 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 (See page
).
CAUTION / NOTICE / HINT
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.
-
Refer to "Data List / Active Test" [Throttle Position Command, Throttle Position No. 1, Throttle Motor Current, Throttle Motor Duty (Open), Throttle Motor Duty (Close)] (See page
).
PROCEDURE
|
1. |
CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P2111 OR P2112) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine / Trouble Codes.
(e) Read DTCs.
Result
|
Result |
Proceed to |
|---|---|
|
DTC P2111 or P2112 is output |
A |
|
DTC 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 |
|
|
|
2. |
INSPECT THROTTLE BODY WITH MOTOR ASSEMBLY (VISUALLY CHECK THROTTLE VALVE) |
(a) Check for contamination between the throttle valve and the housing. If necessary, clean the throttle body with motor assembly, and check that the throttle valve moves smoothly.
OK:
Throttle valve is not contaminated with foreign objects and moves smoothly.
| NG |
|
|
|
3. |
READ VALUE USING TECHSTREAM (THROTTLE POSITION) |
(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
).
(e) Turn the ignition switch to off and wait for at least 30 seconds.
(f) Turn the ignition switch to ON.
(g) Enter the following menus: Powertrain / Engine / Data List / All Data / Throttle Position No. 1, Throttle Position No. 2 and Throttle Position Command.
(h) Check the values displayed on the Techstream while wiggling the ECM wire harness.
(i) Enter the following menus: Powertrain / Engine / Trouble Codes.
(j) 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 |
|
|
|
4. |
REPAIR OR REPLACE WIRE HARNESS AND CONNECTOR (ECM - THROTTLE WITH MOTOR BODY ASSEMBLY) |
HINT:
As the DTC was stored due to a change in the contact resistance of the connector, repair or replace the wire harness or connector (See page
).
| NEXT |
|
END |
|
5. |
REPLACE THROTTLE BODY WITH MOTOR ASSEMBLY |
(a) Replace the throttle body with motor assembly (See page
).
HINT:
Perform "Inspection After Repair" after replacing the throttle body with motor assembly (See page
).
|
|
6. |
CHECK WHETHER DTC OUTPUT RECURS (DTC P2111 OR P2112) |
(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
).
(e) Start the engine, and fully depress and release the accelerator pedal quickly (to fully open and close the throttle valve).
(f) Enter the following menus: Powertrain / Engine / Trouble Codes.
(g) Read the DTCs.
Result
|
Result |
Proceed to |
|---|---|
|
DTC is not output |
A |
|
DTC P2111 or P2112 is output |
B |
| A |
|
END |
| B |
|
|
|