Maintenance Manual for J2 Sedan
Electronic Control System
176
4.
Starter drags the engine, but there is no combustion in cylinder and the engine
does not start.
combustion
There is combustion in cylinder, but the engine extinguishes
.
to start
rotates a
Engine does not maintain a constant speed and the speed changes within range
Usually, it can be determined with the swing of tachometer pointer and the
vibration transferred to the steering wheel, selector rod and body etc.
Incorrect
When releasing the accelerator pedal, no matter whether the vehicle is moving,
of idle
When the accelerator pedal is depressed or being depressed, the
The phenomenon of “vehicle surge” refers to that the vehicle speed (rotation
speed of engine) responds slow when there is a need to accelerate and depress
down the accelerator pedal at the current vehicle speed or the temporary decline
of vehicle speed (rotation speed of
engine) during acceleration.
Poor acceleration
Poor acceleration refers to that the vehicle is
unable to acquire acceleration with
the opening of air throttle even with stable acceleration; or refers to the
disability to reach the maximum vehicle speed.
When firstly depressing down the accelerator pedal to speed up, engine speed
or
There is repeatedly forward surge when traveling with constant or variable
There is a strong voice like the hammer against the cylinder wall during the
driving which is harmful to driving.
5. General
ion should begin with the basic system. In
case of starting failure, unstable idle or
insufficient fuel supply, begin the following basic systems:
a.
c.
Fuel supply: fuel pipe, fuel filter, fuel pump
plug, high tension line, ignition coil.
e.
Emission control system: Leakage of vacuum system.
f.
Others: ignition timing and idle.
The trouble of electronic control system of engine is generally caused by poor contact of the harness
connector. All the harness connectors should be checked to verify whether they are connected correctly.
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