Abs Hydraulic Unit Operation Check - Suzuki Baleno Manual

1. DIAG.-2 connector
2. Diagnosis switch terminal
3. Ground
Brake
pedal
ON
Ignition
switch
OFF
ON
Motor
OFF
ON
3.0 sec.
Solenoids
R-F
OFF
0.5 sec.
ON
3.0
L-F
OFF
0.5
ON
R-R
OFF
ON
L-R
OFF
ON-VEHICLE SERVICE
PRECAUTION
When connectors are connected to ABS hydraulic unit/control
module assembly, do not disconnect connectors of sensors etc.
and turn ignition switch is ON position. Then DTC will be set in ABS
control module.

ABS HYDRAULIC UNIT OPERATION CHECK

1) Check that basic brake system other than ABS is in good
2) Check that battery voltage is 11 V or higher.
3) With ABS warning lamp, check that no abnormality is detected
4) Lift up vehicle.
5) Set transmission to neutral and release parking brake.
6) Turn each wheel gradually by hand to check if brake dragging
7) With diag. switch terminal of DIAG.-2 connector connected to
or
8) Turn ignition switch OFF.
9) Perform following checks with help of another person. Brake
10) If all 4 wheels cannot be checked during one ignition cycle
11) Turn ignition switch to OFF position and remove service wire
3.0
0.5
4.5
0.5
condition.
in ABS. Refer to ABS WARNING LAMP CHECK in this section.
occurs. If it does, correct.
ground by using service wire, turn ignition switch to ON and
check if ABS warning lamp indicates DTC 12.
pedal should be depressed and then ignition switch turned to
ON position by one person and wheel should be turned by
another person's hand. At this time, check that:
D Operation sound of solenoid is heard and wheel turns only
about 0.5 sec. (Brake force is depressurized.)
D Operation sound of pump motor is heard and pulsation is felt
at brake pedal.
(OFF ! ON), repeat Step 8) and 9) till all 4 wheels are
checked.
If a faulty condition is found in Steps 9) and 10), replace hy-
draulic unit.
from DIAG.-2 connector.
ANTILOCK BRAKE SYSTEM (ABS) 5B-31