SFI SYSTEM(w/ Canister Pump Module), Diagnostic DTC:P2111 and P2112
| DTC Code | DTC Name |
|---|---|
| P2111 | Throttle Actuator Control System - Stuck Open |
| 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. This feedback allows the ECM to appropriately control the throttle actuator and monitor the throttle opening angle as the ECM responds to a request from the hybrid system.
This Electronic Throttle Control System (ETCS) does not use a throttle cable.
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
MIL |
Memory |
|---|---|---|---|---|---|
P2111 |
Throttle Actuator Control System - Stuck Open |
The ECM signals the throttle actuator to close, but the actuator is stuck (1 trip detection logic). |
|
Comes on |
DTC stored |
P2112 |
Throttle Actuator Control System - Stuck Closed |
The ECM signals the throttle actuator to open, but the actuator is stuck (1 trip detection logic). |
|
Comes on |
DTC stored |
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 then illuminates the MIL and stores a DTC.
MONITOR STRATEGY
Required Sensors/Components |
Throttle actuator (throttle body with motor assembly) |
Frequency of Operation |
Continuous |
TYPICAL ENABLING CONDITIONS
Throttle actuator current |
2 A or higher |
Duty-cycle to close throttle |
80% or higher |
Throttle actuator current |
2 A or higher |
Duty-cycle to open throttle |
80% or higher |
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
Throttle position sensor voltage |
No change |
Throttle position sensor voltage |
No change |
CONFIRMATION DRIVING PATTERN
Connect the GTS to the DLC3.
Turn the power switch on (IG) and turn the GTS on.
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the power switch off and wait for at least 30 seconds.
Turn the power switch on (IG) and turn the GTS on [A].
Put the engine in inspection mode (maintenance mode).
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 the pending DTCs.
Tip: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.
GTS 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 memory limit
Tip:If the judgment result shows NORMAL, the system is normal.
If the judgment result shows ABNORMAL, the system has a malfunction.
FAIL-SAFE
When either of these DTCs or other DTCs relating to Electronic Throttle Control System (ETCS) malfunctions are 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 5.5° throttle valve opening 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.
CAUTION / NOTICE / HINT
Refer to "Data List / Active Test" [Throttle Position Command, Throttle Position No.1, Throttle Motor Current, Throttle Motor Duty (Open), Throttle Motor Duty (Close)].
Read freeze frame data using the GTS. 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
CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P2111 OR P2112)
Connect the GTS to the DLC3.
Turn the power switch on (IG).
Turn the GTS on.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
Read the DTCs.
Powertrain > Engine and ECT > Trouble Codes
Result
Result
Proceed to
DTC P2111 or P2112 is output
A
DTC P2111 or P2112 and other DTCs are output
B
Tip:If any DTCs other than P2111 or P2112 are output, troubleshoot those DTCs first.
INSPECT THROTTLE BODY WITH MOTOR ASSEMBLY (VISUALLY CHECK THROTTLE VALVE)
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 matter and moves smoothly.
Tip:Perform "Inspection After Repair" after cleaning the throttle body with motor assembly.
Result
Proceed to
OK
NG
NG REPLACE THROTTLE BODY WITH MOTOR ASSEMBLYClick here
READ VALUE USING GTS (THROTTLE POSITION)
Connect the GTS to the DLC3.
Turn the power switch on (IG).
Turn the GTS on.
Clear the DTCs.
Powertrain > Engine and ECT > Clear DTCs
Turn the power switch off and wait for at least 30 seconds.
Turn the power switch on (IG) and turn the GTS on.
Enter the following menus: Powertrain / Engine and ECT / Data List / Ptrl Throttle / Throttle Position No.1, Throttle Position No.2 and Throttle Position Command.
Powertrain > Engine and ECT > Data List
Tester Display
Throttle Position No.1
Throttle Position No.2
Throttle Position Command
Read the values displayed on the GTS while wiggling the ECM wire harness.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
Read the DTCs.
Powertrain > Engine and ECT > Trouble Codes
Result
Result
Proceed to
Value in Data List changes when wire harness is wiggled, or DTC is output
A
Other than above
B
B CHECK WHETHER DTC OUTPUT RECURS (DTC P2111 OR P2112)Click here
REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - THROTTLE BODY WITH MOTOR 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.
Result
Proceed to
NEXT
NEXT END
REPLACE THROTTLE BODY WITH MOTOR ASSEMBLY
Replace the throttle body with motor assembly.
Tip:Perform "Inspection After Repair" after replacing the throttle body with motor assembly.
Result
Proceed to
NEXT
CHECK WHETHER DTC OUTPUT RECURS (DTC P2111 OR P2112)
Connect the GTS to the DLC3.
Turn the power switch on (IG).
Turn the GTS on.
Clear the DTCs.
Powertrain > Engine and ECT > Clear DTCs
Turn the power switch off and wait for at least 30 seconds.
Turn the power switch on (IG).
Turn the GTS on.
Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
Read the DTCs.
Powertrain > Engine and ECT > Trouble Codes
Result
Result
Proceed to
DTCs are not output
A
DTC P2111 or P2112 is output
B
A END