Toyota Tundra (2015 year). Manual — part 2010
*: 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
A. Difference between commanded closed throttle position and current closed throttle
position
0.3 V or more
B. Difference between commanded open throttle position and current open throttle position
0.3 V or more
CONFIRMATION DRIVING PATTERN
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.
6.
Idle the engine for 20 seconds.
7.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [B].
8.
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.
9.
Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
10.
Input the DTC: P2119.
11.
Check the DTC judgment result.
12.
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2119; Thrott...
TESTER
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
HINT:
If the judgment result shows ABNORMAL, the system has a malfunction.
If the judgment result shows INCOMPLETE or N/A, fully depress and release the accelerator
pedal 3 times, and then check the DTC judgment result at step [C].
If 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.
13.
FAIL-SAFE
When this DTC or other DTCs relating to ETCS (Electronic Throttle Control System) malfunctions are 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 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 P2119)
(a) Connect the Techstream to the DLC3.
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2119; Thrott...
A
(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
P2119 is output
A
P2119 and other DTCs are output
B
HINT:
If any DTCs other than P2119 are output, troubleshoot those DTCs first.
B
GO TO DTC CHART
2.
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 DTCs
.
(e) Turn the ignition switch off and wait for at least 30 seconds.
(f) Turn the ignition switch to ON.
(g) Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Throttle
Position No. 1 and Throttle Position Command.
(h) Read the values displayed on the Techstream while fully depressing and releasing the
accelerator pedal quickly.
Result
RESULT
PROCEED TO
Throttle Position No. 1 does not change
A
Throttle Position No. 1 changes even a little
B
HINT:
When a DTC is output, the system changes to fail-safe mode. Therefore, only use the data up until the
time the DTC is stored for confirmation.
B
GO TO STEP 4
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2119; Thrott...
A
OK
OK
3.
INSPECT THROTTLE BODY (RESISTANCE OF THROTTLE ACTUATOR)
(a) Inspect the throttle body
.
NG
GO TO STEP 7
4.
INSPECT THROTTLE BODY (VISUALLY CHECK THROTTLE VALVE)
(a) Check for contamination between the throttle valve and housing. If necessary, clean the
throttle body. Also, check that the throttle valve moves smoothly.
OK:
Throttle valve is not contaminated with foreign objects and moves smoothly.
NG
GO TO STEP 7
5.
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 DTCs
.
(e) Turn the ignition switch off and wait for at least 30 seconds.
(f) Turn the ignition switch to 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) Read the values displayed on the Techstream while wiggling the ECM wire harness.
(i) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
(j) Read DTCs.
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2119; Thrott...
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