TYPICAL MALFUNCTION THRESHOLDS
CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P2111 OR P2112)
INSPECT THROTTLE WITH MOTOR BODY ASSEMBLY (VISUALLY CHECK THROTTLE VALVE)
READ VALUE USING TECHSTREAM (THROTTLE POSITION)
REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - THROTTLE WITH MOTOR BODY ASSEMBLY)
REPLACE THROTTLE WITH MOTOR BODY 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 |
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 (TP) sensor, which is mounted on the throttle with motor body assembly. The TP sensor provides feedback to the ECM in order that it can control the throttle actuator, and therefore the throttle valve, appropriately in response to driver inputs.- HINT:
- This ETCS (Electronic Throttle Control System) does not use a throttle cable.
| DTC No. | DTC Detection Condition | Trouble Area |
| P2111 | Throttle actuator does not close when signaled by ECM (1 trip detection logic) |
|
| P2112 | Throttle actuator does not open when signaled by ECM (1 trip detection logic) |
|
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.
MONITOR STRATEGY
| Related DTCs | P2111: Throttle actuator stuck open P2112: Throttle actuator stuck closed |
| Required Sensors/Components (Main) | Throttle with motor body assembly |
| Required Sensors/Components (Related) | - |
| Frequency of Operation | Continuous |
| Duration | 0.5 seconds |
| MIL Operation | Immediate |
| Sequence of Operation | None |
TYPICAL ENABLING CONDITIONS
| Monitor runs whenever following DTCs not present | None |
| System guard judge condition* | ON |
| All of following conditions met | - |
| Throttle actuator current | 2 A or more |
| Duty cycle to close throttle | 80 % or more |
| All of following conditions met | - |
| Throttle actuator current | 2 A or more |
| Duty cycle to open throttle | 80 % or more |
| *System guard judge condition is ON when the following conditions met | - |
| 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
| TP sensor voltage change | No change |
| TP sensor voltage change | No change |
FAIL-SAFE
When either of these DTCs, or other DTCs relating to ETCS (Electronic Throttle Control System) malfunctions, are stored, the ECM enters fail-safe mode. During fail-safe mode, the ECM cuts off 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 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 to OFF.
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 operation).
- 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 and ECT / 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 and ECT / 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 NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- DTC judgment completed
- If the test result is INCOMPLETE or N/A and no pending DTC is output, perform a universal trip and check for permanent DTCs (YARIS_NCP93 RM000000PDK0QGX.html).
- HINT:
- If a permanent DTC is output, the system is malfunctioning.
- If no permanent DTC is output, the system is normal.
WIRING DIAGRAM
Refer to DTC P2102 (YARIS_NCP93 RM000000PFU0KOX_07.html).INSPECTION PROCEDURE
- 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)] (YARIS_NCP93 RM000000PDN0J9X.html).
| 1.CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P2111 OR P2112) |
Connect the Techstream to the DLC3.
Turn the ignition switch to ON.
Turn the Techstream on.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
Read 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.
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| A | |
| 2.INSPECT THROTTLE WITH MOTOR BODY ASSEMBLY (VISUALLY CHECK THROTTLE VALVE) |
Check for contamination between the throttle valve and the housing. If necessary, clean the throttle with motor body assembly, and check that the throttle valve moves smoothly.
- OK:
- Throttle valve is not contaminated with foreign objects and moves smoothly.
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| OK | |
| 3.READ VALUE USING TECHSTREAM (THROTTLE POSITION) |
Connect the Techstream to the DLC3.
Turn the ignition switch to ON.
Turn the Techstream on.
Clear DTCs (YARIS_NCP93 RM000000PDK0QGX.html).
Turn the ignition switch off and wait for at least 30 seconds.
Turn the ignition switch to ON and turn the Techstream on.
Enter the following menus: Powertrain / Engine and ECT / Data List / Throttle Position No. 1, Throttle Position No. 2 and Throttle Position Command.
Read the values displayed on the Techstream while wiggling the ECM wire harness.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
Read DTCs.
Result Result Proceed to Value in Data List changes when wire harness is wiggled, or DTC is output* A Other than above B
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| A | |
| 4.REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - THROTTLE WITH MOTOR BODY ASSEMBLY) |
As the DTC was stored due to a change in the contact resistance of the connector, repair or replace the wire harness or connector (YARIS_NCP93 RM000000UZ309WX.html).
| NEXT | ||
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| 5.REPLACE THROTTLE WITH MOTOR BODY ASSEMBLY |
Replace the throttle with motor body assembly (YARIS_NCP93 RM000001CZA012X.html).
| NEXT | |
| 6.CHECK WHETHER DTC OUTPUT RECURS (DTC P2111 OR P2112) |
Connect the Techstream to the DLC3.
Turn the ignition switch to ON.
Turn the Techstream on.
Clear DTCs (YARIS_NCP93 RM000000PDK0QGX.html).
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 and ECT / Trouble Codes.
Read DTCs.
Result Result Proceed to DTC is not output A DTC P2111 or P2112 is output B
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| A | ||
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