Precaution; Abs Hydraulic Unit Operation Check - Suzuki sq-416-420-625 Service Manual

Brake
pedal
Ignition
sw.
Motor
3.0 sec.
Solenoid
3.0
Rear
ON-VEHICLE SERVICE

PRECAUTION

When connector are connected to ABS hydraulic unit/control mod-
ule assembly, do not disconnect connectors of sensors and turn
ignition switch ON. 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 condi-
2) Check that battery voltage is 11V or higher.
3) With "ABS" warning lamp, check that no abnormality is de-
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 diagnosis connector connected to
8) Turn ignition switch OFF.
1. Diagnosis
connector
(6 pins connector)
2. Diag. switch
terminal
3. Ground
4. Service wire
9) Perform following checks with help of another person.
10) If all 4-wheels cannot be checked during one ignition cycle
11) Turn ignition switch OFF and remove service wire from diagno-
ANTILOCK BRAKE SYSTEM (ABS) (OPTIONAL) 5E1-31
tion.
tected in ABS. Refer to "DIAGNOSTIC TROUBLE CODE
(DTC) CHECK" in this section.
occurs. If it does, correct.
ground by using service wire, turn ignition switch ON and check
if "ABS" warning lamp indicates DTC 12.
Brake pedal should be depressed and then ignition switch
turned ON 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 Steps 8) and 9) till all 4 wheels are
checked.
If a faulty condition is found in Steps 9) and 10), replace hydrau-
lic unit/control module assembly.
sis connector.