JAC J2 - Throttle Position Sensor



Maintenance Manual for J2 Sedan
Electronic Control System
of Engine
183
1) Dismantlement
①

Discharge coolant
from radiator.
Please refer
to
"Change Engine Coolant".
②

Disconnect the wire harness connector of
the
engine coolant temperature sensor.
③

Dismantle
the
engine
coolant
temperature
sensor.
2) Installation
Be aware of following precaution to install with steps contrary to dismantlement.
■
Apply surface
sealant
on
threaded p
art
of sensor
and tighten
with
specified torque.
Tightening
torque :16-24N. M
■
V
erify
reliable
installation
of
wire
harness
connector.
■
With
engine
idling
，
visually inspect coolant leakage.
III.

Throttle Position Sensor
1. Instruction of
Parts
This sensor is one angle sensor with linear output characteristic and is composed of two arc sliding
contact resistors and two sliding contact arms. The hinges of the sliding contact arms are coaxial with
the throttle shaft. A 5V supply voltage US is applied onto two sides of the sliding resistors. At the
rotation of the throttle, the sliding contact arms rotate as well to move on the sliding contact resistors
and output the potential UP of the contact as voltage output. Therefore, it’s actually a rotation angle
potentiometer tha
t outputs a
voltage signa
l in proportional to the
throttle p
osition.
Fig. 4.3.005