Mitsubishi Eclipse Workshop Manual page 420

I
35-18
SERVICE BRAKES - Anti-skid Braking System
Troubleshooting
E-1 |
When diagnosis codes
No.l 1, No.12,
No.l3
or
No.1
4
are displayed
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.
lHintl
In
addition to
a
broken wire/short circuit
in the
*nu"O
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.l5
is displayed
lExplanationl
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.
o
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
:gi::o'
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l!j:l
iä*ij'o,
3''1n
i
il
p
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.)
o
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
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SIDE)
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Apr.199r
SPEED SENSOR
CONNECTOR
@
Mitsublrhi
Motors Corporation PWt 89010
14AOOE8