Suzuki Liana RH413, Service Manual

Page: 527 / 1302

ABS: 4E-25
DTC Troubleshooting
Step Action Yes No
1 Was “ABS Check” performed? Go to Step 2. Go to “ABS Check”.
2 1) Disconnect applicable ABS wheel speed sensor coupler
with ignition switch OFF.
2) Measure resistance between terminals of ABS wheel
speed sensor. Refer to “Front Wheel Speed Sensor
Inspection” and/or “Rear Wheel Speed Sensor
Inspection”.
Is measured resistance value as specified?
Go to Step 3. Replace ABS wheel
speed sensor assembly.
3 1) Turn ignition switch OFF.
2) Connect applicable ABS wheel speed sensor coupler.
3) Disconnect ABS hydraulic unit / control module
connector.
4) Check for proper connection to ABS control module at
each sensor terminal.
5) If OK, then turn ignition switch ON and measure voltage
between applicable sensor terminal of module connector
and body ground.
Is it 0 V?
Go to Step 4. ABS wheel speed
sensor circuit shorted to
power.
4 1) Turn ignition switch OFF.
2) Measure resistance between the following points.
• Both ABS hydraulic unit / control module connector
terminals of the corresponding sensor. This check
result should be the same as Step 2).
• Either terminal of wheel speed sensor coupler and
body ground. This check result should be no
continuity.
Are both check results OK?
Go to Step 5. Circuit open or shorted
to ground.
5 1) Remove applicable ABS wheel speed sensor.
2) Check sensor for damage or foreign material attached.
Is it in good condition?
Go to Step 6. Clean, repair or replace.
6 Check front and/or rear sensor ring for the following (remove
rear drum as necessary):
• Rotor serration (teeth) neither missing nor damaged.
• No foreign material being attached.
• Rotor not being eccentric.
• Wheel bearing free from excessive play.
Are they in good condition?
Go to Step 7. Clean, repair or replace.
7 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?
Go to Step 8. Replace ABS wheel
speed sensor.
8 Refer to “Front Wheel Speed Sensor On-Vehicle Inspection”
and/or “Rear Wheel Speed Sensor On-Vehicle Inspection”,
check output voltage or waveform.
Is specified voltage and/or waveform obtained?
Substitute a known-
good ABS hydraulic unit
/ control module
assembly and recheck. Replace sensor and
recheck.