JAC J2 User Manual



Maintenance Manual for J2 Sedan
Electronic Control System
of Engine
156
Even with engine stopped, there is high pressure in fuel pipelines. Therefore, the fuel pipe should
not be dismantled casually during the course of maintenance. In case that it is necessary to repair
fuel system, pressure in fuel system should be released before dismantlement of fuel pipe.
3.
The dismantlement
of fuel p
ipe and
the
replacement of
fuel filter should
be carried
out by
the
special personnel in well-ventilated area.
4.
Power supply
of electric
fuel pump sh
ould be tur
n off before
pump is rem
oved from fue
l tank in
order to avoid sparks that may cause fire. The fuel injection pump should not be test with dry state
or in water, otherwise its service life may be shortened. In addition, the positive and negative poles
of the fuel injection pump must not be reversed.
5.
During inspection of
ignition system, the
sparking should be
detected
only when
it
is
necessary and
the time should be as short as possible. The air throttle must not be opened during inspection;
otherwise copious unburned full may flow into the exhaust pipe, accordingly leading to the damage
of three-way
catalyst.
6. The manual adjustment is
unnecessary because the
idling regulation is completed solely
by the
electronic controlled injection system. The throttle limiting screw of throttle body has been adjusted
by the manufacturer in factory; the initial position must not be changed by users arbitrarily.
7.
T
erminals of
battery must
not be
reversed, otherwise electronic
components may
be
damaged.
Negative groun
ding is used in
this system.
8.
Battery cable
should not
be
disconnected with
engine running. Before
welding on
vehicle, cable on
negative and positive poles of battery, and all electronic components should be removed.
9.
Do not
test input a
nd outp
ut signal
of components by p
uncturing t
he insulator
of wire.

JAC J2 Specifications

General

Brand	JAC
Model	J2
Category	Automobile
Language	English