Dtc P0121 Throttle / Pedal Position Sensor / Switch A Circuit Range / Performance Problem. Corolla Auris

Двигатель. COROLLA, AURIS. ZZE150 ZRE151,152 NDE150
Система Управления Двигателем 2Zr-Fe. COROLLA, AURIS. ZZE150 ZRE151,152 NDE150

DESCRIPTION

FAIL-SAFE

INSPECTION PROCEDURE

CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0121)

DTC P0121 Throttle / Pedal Position Sensor / Switch "A" Circuit Range / Performance Problem


DESCRIPTION

УКАЗАНИЕ:
This DTC relates to the throttle position sensor.
Refer to DTC P0120 (See page Нажмите здесь).

DTC No.
DTC Detection Condition
Trouble Area
P0121
Difference between VTA1 and VTA2 voltages is less than 0.8 V, or more than 1.6 V for 2 seconds
(1-trip detection logic)
Throttle position sensor (built into throttle body assembly)

FAIL-SAFE

When this DTC, as well as other DTCs relating to electronic throttle control system malfunctions, is set, the ECM enters fail-safe mode. During fail-safe mode, the ECM cuts the current to the throttle actuator off, and the throttle valve is returned to a 6° 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 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.

INSPECTION PROCEDURE

УКАЗАНИЕ:
Read freeze frame data using the intelligent tester. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. 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.
1.CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0121)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch on (IG) and turn the tester on.

  1. Select the following menu items: Powertrain / Engine and ECT / DTC.

  1. Read the DTCs.

    Result:

    Result
    		Proceed to
    DTC P0121 is output
    		A
    DTC P0121 and other DTCs are output
    		B


B
GO TO DTC CHART (Нажмите здесь)
A

REPLACE THROTTLE BODY ASSEMBLY (Нажмите здесь)