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 cip1120

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                                                                                                                                                                  DI-107
                                                             DIAGNOSTICS        -      ENGINE (5VZ-FE)
                                                                                                                                                                    DI1LZ-14




     DTC                        P1120                    Accelerator Pedal Position Sensor Circuit
                                                         Malfunction

CIRCUIT DESCRIPTION
Accelerator pedal position sensor is mounted on the throttle body and it has the 2 sensors to detects the
accelerator position and a malfunction of the accelerator position's own.
The accelerator pedal position sensor is connected with the accelerator pedal by the accelerator wire and
the voltage applied to the terminals VPA and VPA2 of the ECM changes between 0 V and 5 V in proportion
to the opening angle of the accelerator pedal.
The ECM judges the current opening angle of the accelerator pedal from these signals input from terminals
VPA and VPA2 and the ECM controls the throttle motor based on these signals.
If this DTC is stored, the ECM shuts down the power for the throttle motor and the magnetic 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                                                VPA2
                                                                                                              5                                      *1: Accelerator pedal
                                                                                       Output Voltage (V)
                                                                                       Accelerator Pedal
                                                                                       Position Sensor




                                       *1                                                                                                                released (15

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