Suzuki GA413 Service Manual page 274

5E-20 ANTILOCK BRAKE SYSTEM (ABS) (OPTIONAL)
INSPECTION
STEP
1 1) Remove all speed sensors.
2) Check each sensor for damage or foreign material being
attached to it.
Are they in good condition? (See Fig. 1.)
2 Check visually all wheel speed sensor installation hole for
the following.
D Rotor serration (teeth) neither missing nor damaged.
D No foreign material attached.
D Rotor not being eccentric.
D Wheel bearing free from excessive play.
Are they in good condition? (See Fig. 2.)
3 1) Install each speed sensor to each knuckle and / or axle
housing.
2) Tighten each sensor bolt to specified torque.
Is there any clearance between sensor and knuckle or axle
housing? (See Fig. 3)
4 Referring to item OUTPUT VOLTAGE INSPECTION of
FRONT WHEEL SPEED SENSOR, check output voltage or
waveform of each sensor.
Is proper output voltage or waveform available?
5 Referring to item ABS HYDRAULIC UNIT OPERATION
CHECK in this section, check ABS hydraulic unit.
Is it in good condition?
Fig. 1
Fig. 3
ACTION
Fig. 2
YES
Go to step 2.
Go to step 3.
Replace sensor.
Go to step 5.
Substitute a known-
good ABS hydraulic
unit / control module
assembly and recheck.
NO
Clean or replace.
Clean, repair or
replace.
Go to step 4.
Replace sensor
and recheck.
Replace ABS,
hydraulic unit /
control module
assembly.