Throttle Position Sensor - Mitsubishi 2013 Outlander Service Manual

13A-10

THROTTLE POSITION SENSOR

Throttle
position
sensor
The throttle position sensor is installed in the throttle
body. Throttle position sensor outputs voltage to
engine-ECU based on the throttle shaft rotation
angle. Engine-ECU uses this signal to detect the
throttle valve opening angle to perform throttle valve
control servo feedback control. This throttle position
sensor uses Hall IC and is a non-contact type.
Throttle position sensor
Throttle position
sensor (main)
Hall IC
5V
MULTIPOINT FUEL INJECTION (MPI)
Throttle body
AKC00062AB
Throttle position
sensor (sub)
Hall IC
5V
Engine-ECU
SENSOR
STRUCTURE AND SYSTEM
Throttle position sensor is composed of a permanent
magnet fixed on the throttle shaft, Hall IC that outputs
voltage according to magnetic flux density and a sta-
tor that efficiently introduces magnetic flux from the
permanent magnet to Hall IC.
Magnetic flux density at Hall IC is proportional to the
output voltage.
Throttle position sensor has 2 output systems − throt-
tle position sensor (main) and throttle position sensor
(sub), and the output voltage is output to
engine-ECU. When throttle valve turns, output volt-
age of throttle position sensor (main) and throttle
position sensor (sub) changes. This allows
engine-ECU to detect actual throttle opening angle.
Engine-ECU uses this output voltage for throttle
valve control servo feedback control. The relation-
ship between throttle opening angle and output volt-
age of the throttle position sensor (main) and throttle
position sensor (sub) is as shown in the figure below.
Output voltage (V)
5
4.5
2.5
0.5
0
Throttle valve opening angle
Fully
closed
Throttle position
sensor (main)
Throttle position
sensor (sub)
AK602222AG
Fully
opened