20-24
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ANTI-LOCK BRAKE SYSTEM (ABS)
PROBLEM CODE 71 (Tire Size)
• Check the following and correct the faulty part.
– Incorrect tire pressure.
– Tires not recommended for the motorcycle were
installed (incorrect tire size).
– Deformation of the wheel or tire.
1. Failure Reproduction
If the above items are normal, recheck the problem
code indication:
Erase the problem code (page 20-9).
Test ride the motorcycle above 30 km/h (18 mph).
Retrieve the problem code (page 20-8) and recheck
the ABS indicator [1].
Does the ABS indicator indicate the code "71"?
YES – Faulty ABS modulator
NO – Tire size is normal (intermittent failure)
PROBLEM CODE 81 (ABS Control
Unit)
1. Failure Reproduction
Erase the problem code (page 20-9).
Test ride the motorcycle above 30 km/h (18 mph).
Retrieve the problem code (page 20-8) and recheck
the ABS indicator [1].
Does the ABS indicator indicate the code "81"?
YES – Faulty ABS modulator
NO – ABS control unit is normal (intermittent
failure)
WHEEL SPEED SENSOR
AIR GAP INSPECTION
Support the motorcycle securely using a hoist or
equivalent and raise the wheel off the ground.
Measure the clearance (air gap) between the sensor
and pulser ring at several points by turning the wheel
slowly.
It must be within specification.
The clearance (air gap) cannot be adjusted.
If it is not within specification, check each part for
deformation, looseness or damage.
Check the wheel speed sensor for damage, and
replace if necessary.
Check the pulse ring for deformation or damage, and
replace if necessary.
– Front pulser ring (page 17-22)
– Rear pulser ring (page 18-7)
STANDARD: 0.54 – 1.14 mm (0.021 – 0.045 in)
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