Mitsubishi Eclipse Workshop Manual page 438

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35-36
SERVICE BRAKES
-
Anti-skid Braking System
Troubteshooting
E-l
I
When diagnose codes No.11,
No.12, No.13 or No.14
are displayed.
e
lExplanationl
The ABS ECU detects breaks in the
wheel
speed
sensor wire. This trouble code is output if the wheel
speed sensor signal is not input (or short circuited)
or if its output is low when starting to drive or while
driving.
ll.lti,,,".
to
a
broken wire/short circuit in the
*n""tO
speed sensor, also check whether the sensor
gap is
too
large, rotor
teeth are
missing, sensor
harness
wire
is temporarily broken, or sensor
harness and
body connector are
not
properly
inserted.
E-2
|
When diagnosis code No.15 is displayed
IExplanationl
This trouble code
is
output when there
is
an
abnormality (other than broken
wire or short circuit)
in the
wheel speed sensor output
signal while
driving.
lHintl
The
following
can
be considered
as
the cause of the
wheel speed sensor output
abnormality.
.
Distortion
of
rotor,
teeth
missing
.
Low frequency noise interference when sensor
harness
wire is
broken
.
Noise interference
in
sensor
signal
.
When
the
sensor output signal
is
below the
standard value or
when amplitude modulation
is
over the standard value. using an oscilloscope
to
measure
the wave
shape
of the wheel
speed
sensor output signal
is very
effective.
.
Loose
wheel
bearing
SPEED
SENSOR
(LEFT
SIDEI
{RIGHT
SIDE}
(LEFT
SIDE)
(RIGHT SIDEI
DIAGNOSIS
CONNECTOR
.
Temporarily broken
wire in
sensor
harness
.
Sensor harness
and body
connector
are
not
properly inserted.
NOTE
(1)
lf
contact
is
poor, check
the
sensor cable
by
bending and lightly stretching
it.
(2)
lf there is currently no trouble and if abnormality
in the
displayed sensor circuit cannot be
dis-
covered since values are normal even
when
checked,
turn
the
ignition switch OFF
and
re-execute
the
driving
test. Try
replacing the
ABS ECU only if the same trouble code
is
output
at this
time.
(lf
it
is difficult
to
recreate
the trouble, there is
a
possibility of speed sensor trouble recurring even if
the
ECU
is
replaced.)
C
o
d6
ffi
ü
ü
EEEEIEIEEEEtr
üutu3[g!!Igr$!|!s!I!
FRONT SIDE
@
Mltrubirhi
Motors
Corporrtion
Apr.
1991
PmrE9010

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