Outline Of The Abs - Yamaha FJR 1300 AE 2014 Service Manual

ET3P61019

OUTLINE OF THE ABS

1. The Yamaha ABS (anti-lock brake system) features an electronic control system, which acts on the
front and rear brakes independently. However, one set of pistons in the right front brake caliper is
operated together with the rear brake and this set of pistons is operated only if the force used to de-
press the brake pedal exceeds a preset level.
2. The ABS features a compact and lightweight design to help maintain the basic maneuverability of
the vehicle.
3. The hydraulic unit assembly, which is the main component of the ABS, is centrally located on the
vehicle to increase mass centralization.
ABS layout
2
1
15
1. ABS test coupler
2. ABS warning light
3. ABS ECU fuse
4. ABS solenoid fuse
5. ABS motor fuse
6. Proportioning valve
7. Hydraulic unit assembly (ABS ECU)
8. Rear wheel sensor
ABS
The operation of the Yamaha ABS brakes is the same as conventional brakes on other vehicles, with
a brake lever for operating the front brake and a brake pedal for operating the rear brake. However, part
of the front brake is operated together with rear brake.
When wheel lock is detected during emergency braking, hydraulic control is performed by the hydraulic
system on the front and rear brakes independently.
Useful terms
• Wheel speed:
The rotation speed of the front and rear wheels.
• Chassis speed:
The speed of the chassis.
11
3
4,5
6
14 12,13 11
1-15
6
A
7
A
10
9. Rear wheel sensor rotor
10. Rear brake caliper
11. Metering valve
12. Left front brake caliper
13. Right front brake caliper (partially operated
together with the rear brake)
14. Front wheel sensor
15. Front wheel sensor rotor
FEATURES
7
8
9