The Kawasaki NINJA 650R ABS controls the brake caliper fluid pressure by means of mechatronics – a combination of electronic and hydraulic control technology in order to keep the friction force between the tires and the roads surfaces close to the maximum value and prevent wheel lock. But it does not operate during cruising.

The wheel rotation sensors output the rotation speed of each wheel to the ECU in the ABS hydraulic unit. The wheel rotation sensor is installed to the front fork and rear caliper bracket, and the sensor rotor is pressed into the brake disc. The number of teeth on the front and rear sensor rotor is 50.

The following schematic illustrates the 2005 Kawasaki NINJA 650R ABS Total System Diagram.

Kawasaki NINJA 650R ABS Total System Diagram

1. ECU
2. ABS Indicator Light (LED)
3. Pump Motor
4. Pump
5. Front Reservoir
6. Front Inlet Solenoid Valve
7. Front Outlet Solenoid Valve
8. Rear Inlet Solenoid Valve
9. Rear Outlet Solenoid Valve
10. Brake Lever
11. Brake Pedal
12. ABS Hydraulic Unit
13. Front Brake Caliper
14. Front Wheel Rotation Sensor
15. Front Wheel Rotation Sensor Rotor
16. Rear Brake Caliper
17. Rear Wheel Rotation Sensor
18. Rear Wheel Rotation Sensor Rotor
19. ABS Kawasaki Self-diagnosis System Connector
20. ABS Solenoid Valve Relay
21. ABS Motor Relay
22. Rear Reservoir

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