Toyota Tundra (2015 year). Manual — part 1899
Monitor runs whenever following DTCs not
present
P0120, P0122, P0123, P0220, P0222, P0223, P2135 (Throttle
position sensor)
A. Ignition switch
ON
B. Electronic throttle actuator power
ON
TYPICAL MALFUNCTION THRESHOLDS
P0120:
VTA1 voltage
0.2 V or less, or 4.535 V or higher
P0121:
P0122:
VTA1 voltage
0.2 V or less
P0123:
VTA1 voltage
4.535 V or higher
P0220:
When either condition below is met:
Condition A or B
A. VTA2 voltage
1.75 V or less
B. VTA2 voltage when VTA1 0.2 V or more, and 2.02 V or less
4.8 V or higher
P0222:
VTA2 voltage
1.75 V or less
P0223:
VTA2 voltage when VTA1 0.2 V or more, and 2.02 V or less
4.8 V or higher
P2135 Case 1:
Difference between VTA1 and VTA2 voltages
0.02 V or less
P2135 Case 2:
VTA1 voltage
0.2 V or less
VTA2 voltage
1.75 V or less
COMPONENT OPERATING RANGE
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0120-P0123...
VTA1 voltage
0.2 to 4.535 V
VTA2 voltage
1.75 to 4.8 V
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.
With the vehicle stationary, fully depress and release the accelerator pedal [B].
7.
Idle the engine for 2 seconds or more [C].
8.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [D].
9.
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.
10.
Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
11.
Input the DTC: P0120, P0121, P0122, P0123, P0220, P0222, P0223 or P2135.
12.
Check the DTC judgment result.
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
13.
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0120-P0123...
TESTER
DISPLAY
DESCRIPTION
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, perform steps [B] and [D] again.
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.
14.
FAIL-SAFE
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
INSPECTION PROCEDURE
HINT:
These DTCs relate to the Throttle Position (TP) sensor.
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.
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0120-P0123...
A
PROCEDURE
1.
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) Enter the following menus: Powertrain / Engine and ECT / Data List / ETCS / Throttle Position
No. 1 and Throttle Position No. 2.
(e) Read the values displayed on the Techstream.
Result
WHEN ACCELERATOR PEDAL
RELEASED
WHEN ACCELERATOR PEDAL
DEPRESSED
TROUBLE AREA
PROCEED
TO
THROTTLE
POSITION NO. 1
THROTTLE
POSITION NO. 2
THROTTLE
POSITION NO. 1
THROTTLE
POSITION NO. 2
0 to 0.2 V
0 to 0.2 V
0 to 0.2 V
0 to 0.2 V
VC circuit open
A
4.5 to 5.0 V
4.5 to 5.0 V
4.5 to 5.0 V
4.5 to 5.0 V
E2 circuit open
0 to 0.2 V,
or 4.5 to 5.0 V
2.1 V to 3.1 V
(Fail-safe)
0 to 0.2 V,
or 4.5 to 5.0 V
2.1 V to 3.1 V
(Fail-safe)
VTA1 circuit open or
ground short
0.6 V to 1.4 V
(Fail-safe)
0 to 0.2 V,
or 4.5 to 5.0 V
0.6 V to 1.4 V
(Fail-safe)
0 to 0.2 V,
or 4.5 to 5.0 V
VTA2 circuit open or
ground short
0.5 to 1.1 V
2.1 to 3.1 V
3.2 to 4.8 V
(Not fail-safe)
4.6 to 5.0 V
(Not fail-safe)
Throttle position
sensor circuit normal
B
HINT:
If DTC P0121 is output, proceed to "CHECK HARNESS AND CONNECTOR (THROTTLE POSITION SENSOR
- ECM)".
B
GO TO STEP 5
2.
CHECK HARNESS AND CONNECTOR (THROTTLE POSITION SENSOR - ECM)
(a) Disconnect the D9 throttle body connector.
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0120-P0123...
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