Yamaha FJR13AY 2009, Service Manual

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FEATURES
1-11
ABS warning light
The ABS warning light “1” comes on to warn the rider if a malfunction in the ABS occurs.
When the main switch is turned to “ON”, the ABS warning light comes on for 2 seconds, then goes off,
so that the rider can check if the ABS warning light is disconnected and check if the ABS is operating
properly.
NOTICE
EC3P61009
If the rear wheel is raced with the vehicle on the centerstand, the ABS warning light may flash
or come on. If this occurs, turn the main switch to “OFF”, then back to “ON”. The ABS operation
is normal if the ABS warning light comes on for 2 seconds, then goes off.
Hydraulic unit assembly
The hydraulic unit assembly “1” is composed of hydraulic control valves (each with a outlet solenoid
valve and inlet solenoid valve), buffer chambers, hydraulic pumps, an ABS motor, and ABS ECU. The
hydraulic unit adjusts the front and rear wheel brake fluid pressure to control the wheel speed according
to signals transmitted from the ABS ECU.
1
2
1
2
7 3 7 4
5
8 8
6
3. At low speed
4. At high speed
5. Wheel sensor
6. Wheel sensor rotor 7. Voltage
8. Time
1