Mitsubishi Eclipse Workshop Manual page 77

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FUEL
-
Troubleshooting
13-13
o
o
Trouble
:ode
No.
Diagnosis
rlem
Diagnosis content
Malor
cause
Remarks
(trouble
phenomenon,
etc.)
22
Crank angle
sensor
Though the engine is
cranking
4
seconds
or
more,
the
signal
voltage
of the
crank angle
sensor
does not
vary
(to
be
high,/low).
(1)The crank angle
sensor
is
troubled.
(2)
Open-circuit,
short-circuit
or
improper connector
contact
occurs
in the crank angle
sensor
circuit.
(3)
The
engine control
unit
is
troubled.
.
Engine stop
o
Starting
is
rmpossible.
23
Top
dead
centre
Though the engine
is
running,
the
signal voltage
of the top
dead centre sensor
does
not
vary
(to be
high,zlow).
(1)
The
top dead centre
sensor
is
troubled.
(2) Open-circuit short-circuit or
improper connector contact
occurs
in the top
dead centre
sensor circuit.
(3)
The
engine control
unit
is
troubled.
r
Engine
stop'
24
Vehicle
speed sensor
(reed switch)
During
acceleration
of
engine
revolution speed
of 3.000
r/min. or
more.
the
signal
voltage
of the
vehicle
speed
sensor
does not vary (to
be
high/low).
(1)
The vehicle speed sensor
is
troubled.
(2)
Open-circuit,
short-circuit
or
improper connector
contact
occurs
in the vehicle
speed
sensor circuit.
(3)
The
engine
control unit
is
troubled.
The
engine
sometimes,
cuts
off when
stopping
after deceleration.
25
Barometric
pressure
sensor
(1) The signal voltage
of
the
barometric pressure sensor
is 4.5V
or
higher.
(2) The signal voltage
of
the
barometric
pressure sensor
is
0.2V
or
loruer.
(1) The barometric
pressure sensor
is
troubled.
(2) Open-circuit short-circuit or
improper connector
contact
occurs
in the barometric
pressure
sensor circuit.
(3)
The
engine control
unit
is
troubled.
.
Unstable
idling'
.
lmproper
acceleration'
o
lmproper start'
31
Detonation
sensor
Open-circuit occurs in
the
detonation
sensor circuit.
(1)
The
detonation sensor
is troubled.
(2) Open-circuit short-circuit or
improper connector contact
occurs in the detonation
sensor
circuit.
(3)
The
engine control
unit
is
troubled.
o
lmproper
acceleration'
41
Injector
lnjector is not
continuously
driven
for
4
seconds during
engine
cranking
or
idle
operatpn.
(1)
The injector
is troubled.
(2) Open-circuit short-circuit or
improper connector
contact
occurs in
the injector
sensor
circuit.
(3)
The
engine
control unit
is
troubled.
o
unstable
idling
o
lmproper
acceleration
o
lmproper start
44
lgnition
coil.
power
transistor
unit
During engine
running, the
ignition signal is not
input.
Howwer,
cases
in which
ignition
signals are
input
to
all
cylinders are excluded.
(1)
The ignition
coil
is troubled.
(2)
Open-circuit,
short-circuit
or
improper connector
contact
occurs in
the ignition
primary
circuit.
(3)
The
poner transistor unit
is
troubled.
(4) The
engine control
unit
is
troubled.
o
unstable
idling'
.lmproper
;
acceleration'
o
lmproper
start'
o
o
o
o
O Mit3ub.3hi Motors
Corporrtion
Fnn
E9010

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