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ANTI-LOCK BRAKE SYSTEM
(ABS)
16-12
3. The
ABS
Indicator Function
Inspection
Retrieve
t
he
problem
code
and
erase
it.
With
the ig
nition switch
turned
to
"
ON"
(do
not
operate
t
he
ignition
switch
after
erasing the
problem code),
turn
t he rear wheel by hand
(veh
icle
speed; approximately
4
km/h
(2.5
mph)
or above) and check the ABS
indicator
blinks.
Is the
indicator
blinking?
YES
-
•
The ABS control unit has been dis-
rupted by an extremely powerful
radio wave.
•
Check
the
connect
or
and
wire har-
ness
of
the w heel speed sensor sys-
tem for
loose
connection.
NO
-
GO
TO STEP
4.
4. Speed Sensor
line
Short Circuit
Inspection
at
ABS Control
Unit
Disconnect
the
ABS
control
unit
12P
(Black)
con-
nector.
Measure
for
continuity between the
ABS control
12P
(Black)
connector
wire
harness
side term i-
nals
and ground.
Connection: Black/orange-
ground
Blue/
brown -
ground
Standard:
No
continuity
Is
there continuity?
YES
-
GO
TO
STEP 6.
NO
- GO TO STEP
5.
5.
Speed Sensor
line Short
Circuit
Inspection
at
Sensor Connector
Check
for
continuity between
t
he sensor
side
ter-
minals
and ground.
Connection:
Black
-
ground
Blue
-
ground
Is
there continuity?
NO
-
Short
circuit
in
the
wire
harness
between the ABS
control
unit and
speed sensor.
YES
-
Faulty rear wheel speed sensor.
Bu/
Br
\
Bl
Bu
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Troubleshooting
