ABS: 4E-28
Repair Instructions
ABS Hydraulic Unit Operation Check
S7RS0B4506001
1) Check that basic brake system other than ABS is in
good condition.
2) Check that battery voltage is 11 V or higher.
3) Lift up vehicle.
4) Set transmission to neutral and release parking
brake.
5) Turn each wheel gradually by hand to check if brake
dragging occurs. If it does, correct.
6) Connect SUZUKI scan tool to data link connector
(DLC) (1) with ignition switch OFF.
Special tool
(A): SUZUKI scan tool
7) Turn ignition switch to ON position and select menu
to “HYDRAULIC CONTROL TEST” under
“miscellaneous test” (“MISC. TEST”) mode of
SUZUKI scan tool.
8) Perform the following checks with help of another
person.
Brake pedal (1) should be depressed and then select
testing wheel by SUZUKI scan tool and the wheel (2)
should be turned by another person’s hand. At this
time, check that:
• Operation sound of solenoid is heard and the
wheel turns only about 0.5 sec. (Brake force is
depressurized).
• Operation sound of pump motor is heard and
pulsation is felt at brake pedal.
9) Check for all 4-wheels condition respectively. If a
faulty condition is found, replace hydraulic unit /
control module assembly.
10) After completing the check, turn ignition switch to
OFF position and disconnect SUZUKI scan tool from
DLC.
8 1) Substitute a know-good BCM and recheck ABS control
module for DTC.
IS DTC U1100 detected?
Substitute a know-good
ABS control module and
recheck.
End.
Step Action Yes No
1
(A)
I4RS0A450020-01
I4RH01450021-01
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