Suzuki Grand Vitara 2011 Manual page 1146

4E-22 ABS:
Step
5 Check front and/or rear encoder for the following (remove
front and/or rear drive shaft):
• Encoder surface neither crack nor damaged
• No foreign material being attached
• Encoder not being eccentric
• Wheel bearing free from excessive play
Are they in good condition?
6 1) Install 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 Refer to "Front and Rear Wheel Speed Sensor On-Vehicle
Inspection",check output voltage or waveform.
Is specified voltage and/or waveform obtained?
Action Yes
Go to Step 6.
Go to Step 7.
Substitute a known-
good ABS (ESP®)
hydraulic unit / control
module assembly and
recheck.
No
Clean, repair or replace
wheel hub assembly.
Replace ABS wheel
speed sensor.
Replace sensor and
recheck.