Outline Of The Tcs (Traction Control System) - Yamaha 2013 FJR1300AS Service Manual

EAS1MC1082

OUTLINE OF THE TCS (Traction Control System)

The traction control system controls excessive spinning (slipping) of the rear wheel when accelerating
on slippery surfaces, such as unpaved or wet roads.
The ECU monitors the front and rear wheel speeds using the signals from the front and rear wheel sen-
sors, and detects rear wheel slipping according to the difference between the wheel speeds. If the slip-
ping exceeds the preset value, the ECU controls the slipping using integrated control of the ignition
timing, fuel cut-off, and throttle valve opening of the YCC-T system.
TCS (Traction control system) layout
1
1. ECU (engine control unit)
2. "TCS" button
3. Traction control system indicator/warning light
4. Injectors
5. ABS ECU (electronic control unit)
TCS (Traction control system) block diagram
The signals from the front and rear wheel sensors are sent to the ECU through the ABS ECU, and the
ECU calculates the amount of slip according to the difference between the detected front and rear
wheel speeds.
If the amount of slip exceeds the preset value, the ECU controls the ignition timing, fuel cut-off, and
throttle valve opening of the YCC-T system so that the amount of slip is less than the preset value. The
traction control system indicator/warning light in the multi-function meter center display flashes when
the traction control system has activated.
3
2
10 8,9
4 5
7
6. Rear wheel sensor
7. Throttle servo motor
8. Spark plugs
9. Ignition coils
10. Front wheel sensor
1-36
FEATURES
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