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ABS ANTI-LOCK BRAKING SYSTEM
ROTATION SENSOR CHECK
IMPORTANT NOTICE
The wheel rotation sensor must be handled with caution,
must not receive knocks, e.g., with a hammer, or dropped on
a hard surface. It is a precision instrument.
Do not soak the rotation sensor in water or mud
Do not attempt to repair or remove the wheel rotation sensor.
Remove:
• screw (1) Fig. A
• phonic wheel sensor (2) of the front wheel Fig. A
Disconnect:
• the connector of the phonic wheel (5) Fig. C.
Carry out a visual check of the rotation sensor of the phonic
wheel. Substitute the wheel rotation sensor if it is cracked, bent
or damaged in anyway. If an electrical fault in the sensors is
suspected, check the electrical circuit.
Remove:
• screw (3) Fig. B
• phonic wheel sensor (4) of the rear wheel Fig. A
Disconnect:
• the connector of the phonic wheel (6) Fig. D.
Carry out a visual check of the rotation sensor of the phonic
wheel. Substitute the wheel rotation sensor if it is cracked, bent
or damaged in anyway. If an electrical fault in the sensors is
suspected, check the electrical circuit.
NOTE:_________________________________
Place the motorcycle on a suitable support so that the front
wheel is raised.
Check:
Lift the front/rear wheels off the ground and measure the
distance at various points between the sensor and the phonic
wheel.
Air light
Front Rear
0.1 – 1.5 mm
295 mm
NOTE:_________________________________
It is not possible to adjust the distance of the sensor.
• If the distance does not come within the prescribed values,
check the hub bearing (refer to paragraph Removal/Instal-
lation of the front/rear wheel), the sensor, the phonic wheel
and the assembly conditions of the sensor.
A
1
B
3
C
D
2
4
5
6
COPY - Moto GB - Grant Martland - grantmartland@motogb.co.uk
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