Suzuki Wagon R Manual page 1536

Step
6 1) Install ABS wheel speed sensor to knuckle.
2) Tighten sensor bolt to specified torque and check that
there is no clearance between sensor and knuckle.
Is it OK?
7 Referring to "Reference" of "FRONT WHEEL SPEED SEN-
SOR" and/or "Reference" of "REAR WHEEL SPEED SEN-
SOR" in this section, check output voltage or waveform.
Is specified voltage and/or waveform obtained?
Action
ANTILOCK BRAKE SYSTEM (ABS) 5E-25
Yes
Go to Step 7. Replace ABS wheel
speed sensor.
Substitute a known- Replace sensor and
good ABS hydraulic recheck.
unit/control module
assembly and
recheck.
No