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ANTI-LOCK BRAKE SYSTEM
(ABS)
4.
Modulator
Inspect
ion by Replacing the Front
and Rear Modulators
Connect the
front ABS
control unit 3P
(Light
r -
--
--
-
--
-- -
--
--
- -
--,
16-26
gray) and 2P connectors to the rear ABS modula-
tor.
Connect the
rear
modulator 3P (Gray) and
2P
connectors to the
rear modulator.
Perform
the pre-start self-diagnosis
and
retrieve
the
problem
code,
and
record it.
Is the any problem code
indicate?
10
blinks-Faulty rear
ABS modulator.
11
b
links-Faulty ABS control unit.
Problem code 12 and
13:
ABS control unit (front and
rear
mot
or d rive circuit)
1. ABS Indicator Checking
The ABS
indicator blinks or come on and stays
on when the ABS control unit has been dis-
rupted by an extremely powerful radio wave
(electromagnetic
interfere).
This
is just a
tempo-
rary symptom.
Erase
the
problem
code
and
the
ABS control
unit
is normal
unless the symptom
occurs again.
Turn
the
ignition
switch
to "ON"
and
check the
ABS
indicator.
Is the indicator still blinking?
YES
- GO
TO STEP 2.
NO
-
GO TO
STEP
3.
2. ABS Indicator Function Rechecking
Retrieve the
problem code
and
erase
it.
Perform the pre-start self-diagnosis and check
the
ABS
indicator.
Is
the
indicator
still blinking?
NO
-
•
Fine foreign
matter
in
modulator o
r
the ABS control
unit has
been
dis-
rupted
by an extremely powerful
radio wave.
•
Check
t
he connector and wire
har-
ness of the wheel speed sensor sys-
tem for loose connection.
YES
-
GO
TO STEP 3.
12
13
(
(
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Troubleshooting
