Mitsubishi 2013 Outlander Service Manual page 50

13A-12
Accelerator pedal position sensor is integrated with
accelerator pedal, and detects accelerator opening
angle. Engine-ECU uses the output voltage of this
sensor to control appropriate throttle valve opening
angle and fuel injection volume. This accelerator
pedal position sensor uses Hall IC and is a non-con-
tact type.
STRUCTURE AND SYSTEM
Pedal shaft
Accelerator pedal position sensor is composed of a
permanent magnet fixed on the magnet carrier of the
pedal shaft, Hall IC outputs voltage according to
magnetic flux density and a stator that efficiently
introduces magnetic flux from the permanent magnet
to Hall IC.
Accelerator pedal position sensor
Accelerator pedal
position sensor (main)
Hall IC
MULTIPOINT FUEL INJECTION (MPI)
Magnet
Hall IC
AK602570AB
Accelerator pedal
position sensor (sub)
Hall IC
5V
Engine-ECU
SENSOR
Magnetic flux density at Hall IC is proportional to the
output voltage.
The accelerator pedal position sensor has 2 output
systems − accelerator pedal position sensor (main)
and accelerator pedal position sensor (sub), and the
output voltage is output to engine-ECU. According to
depression of the accelerator pedal, output voltage
of the accelerator pedal position sensor (main) and
accelerator pedal position sensor (sub) changes.
This allows engine-ECU to detect the actual acceler-
ator pedal depression amount. Engine-ECU uses
accelerator pedal position sensor (main) output volt-
age for appropriate throttle valve opening angle con-
trol and fuel injection volume control. Also,
engine-ECU compares output voltage of the acceler-
ator pedal position sensor (main) and accelerator
pedal position sensor (sub) to check for abnormality
in sensor. The relationship between accelerator
opening angle and output voltage of the accelerator
pedal position sensor (main) and accelerator pedal
position sensor (sub) is as shown in the figure below.
Output voltage (V)
Accelerator pedal
5
position sensor (main)
4
3
2
1
5V
0
Accelerator
pedal stroke
Accelerator pedal
position sensor (sub)
Full throttle
point
AK602211 AD