Suzuki GRAND VITARA JB416, Service Manual

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4E-21 ABS:
DTC Troubleshooting
Step Action Yes No
1 Was “ABS Check” performed? Go to Step 2. Go to “ABS Check: ”.
2 1) Turn ignition switch OFF.
2) Disconnect ABS (ESP
®
) control module connector.
3) Check for proper connection to ABS (ESP
®
) control
module at each sensor terminal.
4) If OK, then turn ignition switch ON and measure voltage
between applicable sensor terminal of module connector
and vehicle body ground.
Is it 0 V?
Go to Step 3. ABS wheel speed
sensor circuit shorted to
power.
3 1) Disconnect applicable wheel speed sensor coupler with
ignition switch OFF.
2) Measure resistance between the following points.
• Both ABS (ESP
®
) control module connector (1)
terminals a pair of applicable sensor terminals. This
check result should be no continuity.
• Between applicable sensor terminal of ABS (ESP
®
)
control module connector and vehicle body ground.
This check result should be no continuity.
• Between applicable sensor terminal of module
connector and corresponding terminal of wheel speed
sensor connector (2) in main harness (for front
sensor) or floor harness (for rear sensor). This check
result should be continuity.
Are each check results OK?
Go to Step 4. Circuit open or short to
ground.
4 1) Remove applicable wheel speed sensor.
2) Check sensor for damage or foreign material attached.
Is it in good condition?
Go to Step 5. Clean, repair or replace.
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?
Go to Step 6. Clean, repair or replace
wheel hub assembly.
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?
Go to Step 7. Replace ABS wheel
speed sensor.
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