Page 2631 - Foton Workshop Manual - Sauvana

DIAGNOSIS-ENGINE CONTROL SYSTEM 62-579
P2127，P2128，P2132，P2133，P2135，P2140 - ELECTRONIC

ACCELERATOR PEDAL POSITION SENSOR FAULT

P2127-Lower voltage of electronic throttle pedal position sensor1 signal
P2128-Higher voltage of electronic throttle pedal position sensor 1 signal
P2132-Lower voltage of electronic throttle pedal position sensor 2 signal 62
P2133-Higher voltage of electronic throttle pedal position sensor 2 signal
P2135-Improper signal of lower voltage of electronic throttle pedal position sensor1
P2140-Improper signal of electronic throttle pedal position sensor

General

1. The electronic accelerator pedal position sensor, transmitting the signal of the speed
and depth for stepping on the accelerator, which will bereceived and interpreted
byECU , and then it will send the control instruction that requires the electronic
throttle to open at theangle fast or slowly according to the instruction. This process
is precise and fast.
2. The electronic accelerator pedal sensor is made up by two sensors. These two are
potentiometer-type sensors, which transfer theaccelerator pedal position to output
voltage and send the voltage signal toECU. ECUwill judge the current open angle of
accelerator pedal based on the signals and thus control the throttle control motor.
3. The idle position of the accelerator pedal is decided byreceiving the signal from the
electronic accelerator pedal sensor by ECU .ECUcontrols the running of the motor
by these signals.

Circuit Diagram

Engine ECU
Electronic Electronic E01
Electronic throttle1 Electronic Electronic throttle2 Electronic C99
throttle1 signal throttle1 throttle2 signal throttle2
power input output ground ground output power input
C99 C99 C99 C99 C99 C99
82 83 35 11 61 81
W-Y L-O L-P L-V L-W Y-L

1 2 3 6 5 4

Electronic accelerator pedal C98

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