APRILIA tuono v4 Owner's Manual page 49

Under no circumstances can ATC compensate for any rider error or improper use of
the throttle.
THE TRACTION CONTROL SYSTEM CANNOT PREVENT FALLS WHILE COR-
NERING.
ACCELERATING SUDDENLY WHILE THE VEHICLE IS INCLINED OR WITH THE
HANDLEBARS TURNED WILL PUT THE VEHICLE IN AN UNSTABLE STATE
THAT IS EXTREMELY DIFFICULT TO RECTIFY.
DO NOT SPEED RECKLESSLY. LIMITS OF GRIP ARE DETERMINED BY LAWS
OF PHYSICS WHICH EVEN THE ATC SYSTEM CANNOT OVERCOME.
The ATC system also responds optimally and limits wheelspin during cornering.
This is made possible by the inertia sensor platform, which provides the ECU with
precise information concerning the inclination of the motorcycle.
ATC SYSTEM DEACTIVATED MANUALLY
At key-on and after the initial instrument panel check cycle, if the system is deactiva-
ted, the a-PRC indicator light remains lit constantly until the rider activates the system
again.
ATC SYSTEM ACTIVE
At key-on and after the initial instrument panel check cycle, if the system was active
at the last key-off, the a-PRC indicator light flashes until the vehicle exceeds 5 Km/h
(3.1 mph), after which it extinguishes.
If the a-PRC indicator light remains constantly lit, this means that a fault has been
detected and the ATC system has been automatically deactivated.
In this case carry out the following operations:
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