JAC J2 User Manual



Maintenance Manual for J2 Sedan
Electronic Control System
of Engine
227
phenomen
on still exists at th
is point, reinsta
ll the original ECM and re
peat the proc
edures again to c
arry
out the Repair.
T
rouble phenomenon 1: during the
start-up, the engine does
not run or runs slowly
General trouble position:
1.
Battery; 2.
Starter; 3.Wire
harness or
ignition switch;
4.Mechanical
part
of
engine
General diagnosis procedure:
No.
Operating Steps
Detection Results
Subsequent Steps
Yes
Next
step
1
Check the voltage between the two terminals of battery with
multi-meter to see whether it is
about 8-12V dur
ing starting
of engine.
No
Replace battery
Yes
Next
step
2
With ignition switch at
the starting position, check voltage of
starter negative terminal to verify that it is above 8V.
No
Repair or replace
wire harness
Yes
Repair or replace the
starter
3
Dismantle the starter to check its operating state. Mainly
check for sticking due
to open circuit or
poor lubrication.
No
Next step
Yes
Change with
lubricating oil of
proper grade
4
If the trouble only present in winter, then check whether too
large resistance of starter is caused by
improper selection of
the lubricating oil for engine or the gearbox oil.
No
Next step
Yes
Remove large
internal resistance of
engine
5
Check engine for too large internal mechanical resistance; if
it is a case, the failure of rotation or the slow rotation of
starter may occur.
No
Repeat abov
e steps

JAC J2 Specifications

General

Brand	JAC
Model	J2
Category	Automobile
Language	English