Toyota Tundra (2015 year). Manual — part 1898

Last Modified: 9-16-2014

6.6 C

Doc ID: RM000000PF60XRX

Model Year: 2015

Model: Tundra

Prod Date Range: [08/2014 - ]

Title: 3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0120-P0123,P0220,P0222,P0223,P2135; Throttle /

Pedal Position Sensor / Switch "A" Circuit Malfunction; 2015 MY Tundra [08/2014 - ]

DTC

P0120

Throttle / Pedal Position Sensor / Switch "A" Circuit Malfunction

DTC

P0121

Throttle / Pedal Position Sensor / Switch "A" Circuit Range / Performance

Problem

DTC

P0122

Throttle / Pedal Position Sensor / Switch "A" Circuit Low Input

DTC

P0123

Throttle / Pedal Position Sensor / Switch "A" Circuit High Input

DTC

P0220

Throttle / Pedal Position Sensor / Switch "B" Circuit

DTC

P0222

Throttle / Pedal Position Sensor / Switch "B" Circuit Low Input

DTC

P0223

Throttle / Pedal Position Sensor / Switch "B" Circuit High Input

DTC

P2135

Throttle / Pedal Position Sensor / Switch "A" / "B" Voltage Correlation

CAUTION / NOTICE / HINT

DESCRIPTION

HINT:

These DTCs relate to the throttle position sensor.

conditions, such as at high speeds as well as very low speeds.

between 0 V and 5 V in proportion to the throttle valve opening angle, and are transmitted to the VTA

increases. The ECM calculates the throttle valve opening angle according to these signals and controls the

throttle actuator in response to driver inputs. These signals are also used in calculations such as air-fuel ratio

correction, power increase correction and fuel-cut control.

3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0120-P0123...

DTC

CODE

DTC DETECTION CONDITION

TROUBLE AREA

P0120

(1 trip detection logic)

Throttle position sensor

(built into throttle body)

ECM

P0121

The difference between the VTA1 and VTA2 voltages is

below 0.8 V or higher than 1.6 V for 2 seconds or less

(1 trip detection logic)

Throttle position sensor

(built into throttle body)

Throttle position sensor

circuit

ECM

P0122

Throttle position sensor

(built into throttle body)

Short in VTA1 circuit

Open in VC circuit

ECM

P0123

Throttle position sensor

(built into throttle body)

3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0120-P0123...

DTC

CODE

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

(1 trip detection logic)

Throttle position sensor

(built into throttle body)

ECM

P0222

Throttle position sensor

(built into throttle body)

Short in VTA2 circuit

Open in VC circuit

ECM

P0223

(1 trip detection logic)

Throttle position 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

Throttle position sensor

(built into throttle body)

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 sensor to monitor the throttle valve opening angle. There are several

3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0120-P0123...

throttle valve opening angle. If the difference between VTA1 and VTA2 is incorrect, the ECM

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 stored 10 seconds after the engine is next started.

P0121

This sensor transmits 2 signals: VTA1 and VTA2. VTA1 is used to detect the throttle opening angle and VTA2 is

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 not present

None

A. Ignition switch

ON

B. Electronic throttle actuator power

ON

P0121

3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0120-P0123...