Toyota Tundra (2015 year). Manual — part 1522
DTC
NO.
DTC DETECTION CONDITION
TROUBLE AREA
(1 trip detection logic)
Open in VTA1 circuit
Open in E2 circuit
Short between VC and VTA1
circuits
ECM
P0220
accelerator pedal depressed
(1 trip detection logic)
TP sensor (built into throttle
body assembly)
ECM
P0222
(1 trip detection logic)
TP sensor (built into throttle
body assembly)
Short in VTA2 circuit
Open in VC circuit
ECM
P0223
depressed
(1 trip detection logic)
TP sensor (built into throttle
body)
Open in VTA2 circuit
Open in E2 circuit
Short between VC and VTA2
circuits
ECM
P2135
Either condition (a) or (b) met (1 trip detection logic):
Short between VTA1 and
VTA2 circuits
TP sensor (built into throttle
body assembly)
ECM
HINT:
Reference (Normal Condition):
DISPLAY ITEM
ACCELERATOR PEDAL FULLY
RELEASED
ACCELERATOR PEDAL FULLY
DEPRESSED
Throttle Position No.
1
0.5 to 1.1 V
3.2 to 4.8 V
Throttle Position No.
2
2.1 to 3.1 V
4.6 to 5.0 V
MONITOR DESCRIPTION
P0120, P0122, P0123, P0220, P0222, P0223, P2135
The ECM uses the Throttle Position (TP) sensor to monitor the throttle valve opening angle. There are several
throttle valve opening angle. If the difference between VTA1 and VTA2 is incorrect, the ECM
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0120-P012...
interprets this as a malfunction in the sensor, and stores a DTC.
VTA1 and VTA2 each have a specific voltage range. If VTA1 or VTA2 is outside the normal operating
range, the ECM interprets this as a malfunction in the sensor, and stores a DTC.
If the malfunction is not repaired successfully, a DTC is set 10 seconds after the engine is next started.
P0121
This sensor transmits two signals: VTA1 and VTA2. VTA1 is used to detect the throttle opening angle and VTA2
is used to detect malfunctions in VTA1. The ECM performs several checks to confirm the proper operation of
the TP sensor and VTA1.
MONITOR STRATEGY
Related DTCs
P0120: Throttle position sensor 1 range check (Fluctuating)
P0121: Throttle position sensor rationality
P0122: Throttle position sensor 1 range check (Low voltage)
P0123: Throttle position sensor 1 range check (High voltage)
P0220: Throttle position sensor 2 range check (Fluctuating)
P0222: Throttle position sensor 2 range check (Low voltage)
P0223: Throttle position sensor 2 range check (High voltage)
P2135: Throttle position sensor range check (Correlation)
Required Sensors/Components (Main)
Throttle position sensor
Required Sensors/Components (Related)
-
Duration
2 seconds: P0120, P0122, P0123, P0220, P0222 and P0223
Within 2 seconds: P0121
0.5 seconds: P2135 Case 1
0.4 seconds: P2135 Case 2
MIL Operation
Immediate
TYPICAL ENABLING CONDITIONS
P0120, P0122, P0123, P0220, P0222, P0223, P2135
Monitor runs whenever following DTCs are not present
None
A. Ignition switch ON
0.012 seconds or more
B. Electronic throttle actuator power
ON
P0121
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0120-P012...
Monitor runs whenever following DTCs are not present
None
Throttle position sensor circuit failure (P0120, P0122, P0123, P0220, P0222, P0223, P2135)
Not detected
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 more
P0121
When either condition below is met:
-
P0122:
VTA1 voltage
0.2 V or less
P0123:
VTA1 voltage
4.535 V or more
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 more
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 more
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-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0120-P012...
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 DTC.
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-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0120-P012...
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