APRILIA TUAREG 660 Instruction Manual page 91

NOTE
SHOULD THIS OCCUR, CONTACT AN Aprilia Approved Dealer.
THE ATC SYSTEM ACTS ON THE REAR WHEEL ON THE BASIS OF INFORMA-
TION RECEIVED FROM TONE WHEELS INSTALLED ON BOTH WHEELS. AL-
WAYS CHECK THAT THE TONE WHEELS ARE CLEAN, AND REGULARLY
CHECK THAT THE GAP BETWEEN THE TONE WHEEL AND THE SENSOR IS
CONSTANT AROUND THE ENTIRE CIRCUMFERENCE OF THE TONE WHEEL
ITSELF. SHOULD THE WHEELS BE REMOVED AND REFITTED, IT IS VERY IM-
PORTANT TO CHECK THAT THE DISTANCE BETWEEN TONE WHEEL AND
SENSOR IS THE ONE SPECIFIED. FOR CHECKING AND ADJUSTMENT, CON-
TACT AN Authorised Aprilia Workshop.
NOTE
IN CASE OF EXTENDED REAR WHEEL ROTATION WITH THE FRONT ONE
LOCKED (BURNOUT, MOTORCYCLE ON THE CENTRE STAND, ETC.) THE SYS-
TEM CAN BE DEACTIVATED AUTOMATICALLY WHEN THE a-PRC INDICATOR
LIGHT STAYS ON.
TO REACTIVATE, TURN THE IGNITION SWITCH OFF AND THEN ON AGAIN AND
SELECT THE REQUIRED SETTING.
NOTE
a-PRC SYSTEM SENSORS, WITH HIGH PRECISION OF READING THE TONE
WHEELS, CAN GENERATE, WITH MOTORCYCLE AT STANDSTILL AND ENGINE
RUNNING, A km/h (mi) SPEED INDICATION IN THE DIGITAL DISPLAY.
SUCH PERFORMANCE IS NORMAL AND DOES NOT CAUSE MALFUNCTIONING
OF THE a-PRC SYSTEM.
Characteristic
Distance between tone wheel and front sensor
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