P2111
2GR-FSE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2111, P2112: Throttle Actuator Control System - Stuck Open
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 (TP) sensor, which is mounted on the throttle body assembly. The TP 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.
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 sets 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
TYPICAL ENABLING CONDITIONS
All:
P2111 (Throttle actuator stuck open):
P2112 (Throttle actuator stuck closed):
TYPICAL MALFUNCTION THRESHOLDS
P2111 (Throttle actuator stuck open):
P2112 (Throttle actuator stuck closed):
FAIL-SAFE
When either of these DTCs, as well as other DTCs relating to ETCS (Electronic Throttle Control System) malfunctions, is set, 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 stops the engine and the vehicle can be driven using solely the hybrid system. 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 power switch is then turned off.
WIRING DIAGRAM
Refer to DTC P2102 P2102.
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 be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air-fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction Freeze Frame Data.
PROCEDURE
1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P2111 OR P2112)
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
(e) Read DTCs.
Result:
HINT
If any DTCs other than P2111 or P2112 are output, troubleshoot those DTCs first.
B -- GO TO DTC CHART SFI System
A -- Continue to next step.
2. INSPECT THROTTLE BODY ASSEMBLY (VISUALLY CHECK THROTTLE VALVE)
(a) Check for contamination between the throttle valve and the housing. If necessary, clean the throttle body assembly. Also, check that the throttle valve moves smoothly.
OK:
Throttle valve is not contaminated with foreign objects and moves smoothly.
NG -- REPLACE THROTTLE BODY ASSEMBLY
OK -- Continue to next step.
3. READ VALUE USING TECHSTREAM (THROTTLE POSITION)
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Turn the Techstream on.
(d) Clear the DTCs DTC Check / Clear.
(e) Turn the power switch off and wait for at least 30 seconds.
(f) Turn the power switch on (IG) and turn the Techstream on.
(g) Enter the following menus: Powertrain / Engine and ECT / 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 and ECT / Trouble Codes.
(j) Check for DTCs.
Result
*: As the DTC was stored due to a change in the contact resistance of the connector, repair or replace the wire harness or connector Electronic Circuit Inspection Procedure.
B -- CHECK WHETHER DTC OUTPUT RECURS (DTC P2111 OR P2112)
A -- REPAIR OR REPLACE HARNESS OR CONNECTOR
4. REPLACE THROTTLE BODY ASSEMBLY
(a) Replace the throttle body assembly Removal.
NEXT -- Continue to next step.
5. CHECK WHETHER DTC OUTPUT RECURS (DTC P2111 OR P2112)
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Turn the Techstream on.
(d) Clear the DTCs DTC Check / Clear.
(e) Put the engine in inspection mode Inspection Mode Procedure.
(f) Start the engine, and fully depress and release the accelerator pedal quickly to fully open and close the throttle valve.
(g) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
(h) Read the DTCs.
Result:
B -- REPLACE ECM Removal
A -- END