Toyota Tundra (2015 year). Manual — part 1256
Last Modified: 9-16-2014
6.6 C
Doc ID: RM000000PFV11BX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: 1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2111,P2112; Throttle Actuator Control System - Stuck
Open; 2015 MY Tundra [08/2014 - ]
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
(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)
Throttle actuator
Throttle with motor body assembly
Throttle valve
ECM
Wire harness or connector
P2112
Throttle actuator does not open when signaled by ECM
(1 trip detection logic)
Throttle actuator
Throttle with motor body assembly
Throttle valve
ECM
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.
MONITOR STRATEGY
Related DTCs
P2111: Throttle actuator stuck open
P2112: Throttle actuator stuck closed
Required Sensors/Components (Main)
Throttle actuator
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2111,P2112; ...
Required Sensors/Components (Related)
-
Duration
0.5 seconds
MIL Operation
Immediate
TYPICAL ENABLING CONDITIONS
All
Monitor runs whenever following DTCs not present
None
System guard*
ON
*System guard 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
P2111 (Throttle Actuator Stuck Open)
Throttle actuator current
2 A or more
Duty cycle to close throttle
80% or more
P2112 (Throttle Actuator Stuck Closed)
Throttle actuator current
2 A or more
Duty cycle to open throttle
80% or more
TYPICAL MALFUNCTION THRESHOLDS
TP sensor voltage change
No change
CONFIRMATION DRIVING PATTERN
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2111,P2112; ...
Connect the Techstream to the DLC3.
1.
Turn the ignition switch to ON and turn the Techstream on.
2.
Clear DTCs (even if no DTCs are stored, perform the clear DTC operation).
3.
Turn the ignition switch off and wait for at least 30 seconds.
4.
Turn the ignition switch to ON and turn the Techstream on [A].
5.
Start the engine and fully depress and release the accelerator pedal quickly (to fully open and close
the throttle valve).
6.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [B].
7.
Read the pending DTCs.
HINT:
If a pending DTC is output, the system is malfunctioning.
If a pending DTC is not output, perform the following procedure.
8.
Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
9.
Input the DTC: P2111 or P2112.
10.
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
11.
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2111,P2112; ...
HINT:
If the judgment result shows NORMAL, the system is normal.
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
.
HINT:
If a permanent DTC is output, the system is malfunctioning.
If no permanent DTC is output, the system is normal.
12.
FAIL-SAFE
and the throttle valve is returned to a 7° 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 off.
WIRING DIAGRAM
Refer to DTC P2102
.
INSPECTION PROCEDURE
HINT:
Read freeze frame data using the Techstream. 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.
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 and ECT / Trouble Codes.
(e) Read DTCs.
Result
RESULT
PROCEED TO
P2111 or P2112 is output
A
P2111 or P2112 and other DTCs are output
B
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2111,P2112; ...
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