Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota 4Runner 1996-2003 Approved SIL techinfo.toyota.com ileaf 02toyrm 02toypdf 02rmsour 2002 024runne di eg5vzfe cip0120

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DI-36
                                                             DIAGNOSTICS        -      ENGINE (5VZ-FE)
                                                                                                                                                                           DI1LH-14




     DTC                        P0120                    Throttle/Pedal Position Sensor/Switch "A"
                                                         Circuit Malfunction

CIRCUIT DESCRIPTION
Throttle position sensor is mounted on the throttle body and it have the 2 sensors to detect the throttle open-
ing angle and the malfunction of the throttle position sensor's own.
The voltage applied to the terminals VTA and VTA2 of the ECM changes between 0 V and 5 V in proportion
to the opening angle of the throttle valve.
The ECM judges the current opening angle of the throttle valve from these signals input from terminals VTA
and VTA2, and the ECM controls the throttle motor to make the throttle valve angle properly in response to
driving condition.
If this DTC is stored, the ECM shuts down the power for the throttle motor and the electromagnetic clutch,
and the throttle valve is fully closed by the return spring.
However, the opening angle of the throttle valve can be controlled by the accelerator pedal through the
throttle cable.
   Movable Range                                       Movable Range                                                       VTA2
                                                                                        Throttle Position Sensor


                                                                                                                     5                                      *1: Accelerator pedal
                                                                                        Output Voltage (V)



                                       *1                                                                                                                       released (15

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