Description

HINT:

• This ETCS (Electronic Throttle Control System) does not use a throttle cable.

• The Accelerator Pedal Position (APP) sensor is mounted on the accelerator pedal bracket and has 2 sensor circuits: VPA (main) and VPA2 (sub). This sensor is a non-contact type, and uses Hall-effect elements, in order to yield accurate signals, even in extreme driving conditions, such as at high speeds as well as very low speeds. The voltage, which is applied to terminals VPA and VPA2 of the ECM, varies between 0 V and 5 V in proportion to the operating angle of the accelerator pedal (throttle valve). A signal from VPA indicates the actual accelerator pedal opening angle (throttle valve opening angle) and is used for engine control. A signal from VPA2 conveys the status of the VPA circuit and is used to check the APP sensor itself.

• The ECM monitors the actual accelerator pedal opening angle (throttle valve opening angle) through the signals from VPA and VPA2, and controls the throttle actuator according to these signals.

Accelerator Pedal Position Sensor

Magnet

Accelerator Pedal Position Sensor Output Voltage (V)

0 Usable Range

Accelerator Pedal Turning Angle(deg)

*1 : Accelerator Pedal Fully Released *2 : Accelerator Pedal Fully Depressed

DTC No.

DTC Detection Conditions

Trouble Areas

P2120

VPA fluctuates rapidly beyond upper and lower malfunction thresholds for 0.5 seconds or more (1 trip detection logic)

• Accelerator Pedal Position (APP) sensor

• ECM

P2122

VPA 0.4 V or less for 0.5 seconds or more when accelerator pedal fully released (1 trip detection logic)

• Open in VCP1 circuit

• Open or ground short in VPA circuit

• ECM

P2123

VPA 4.8 V or more for 2.0 seconds or more (1 trip detection logic)

• ECM

P2125

VPA2 fluctuates rapidly beyond upper and lower malfunction thresholds for 0.5 seconds or more (1 trip detection logic)

• ECM

P2127

VPA2 1.2 V or less for 0.5 seconds or more when accelerator pedal fully released (1 trip detection logic)

• Open in VCP2 circuit

• Open or ground short in VPA2 circuit

• ECM

P2128

Conditions (a) and (b) continue for 2.0 seconds or more (1 trip detection logic):

(b) VPA between 0.4 V and 3.45 V

• Open in EPA2 circuit

• ECM

DTC No.

DTC Detection Conditions

Trouble Areas

P2138

Conditions (a) and (b) continue for 2.0 seconds or more (1 trip detection logic):

(a) Difference between VPA and VPA2 0.02 V or less

(b) VPA 0.4 V or less and VPA2 1.2 V or less

• Short in between VPA and VPA2 circuits

• ECM

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