APRILIA Tuono 660 2021 Service Station Manual page 342

Braking system
MORE OIL IS REQUIRED TO BLEED THE ABS SYSTEM THAN A CONVENTIONAL SYSTEM. FOR
THIS REASON, CAREFULLY CHECK THE OIL LEVEL IN THE BRAKE TANK.
•
If even after bleeding, the front brake lever feels "spongy", the secondary circuit in the ABS
control unit must be bled. To do this, perform a road test and repeatedly activate the ABS
system.
•
Bleed and using the diagnostic tool, delete any errors on the ABS and on the "vehicle" control
unit.
•
Before handing back the vehicle, perform a functional road test.
REPLACING/ACTIVATING NEW ABS CONTROL UNIT
In case of replacement of the ABS control unit, ensure that the new one has caps on all four hydraulic
connections and then proceed as follows:
•
After connecting the new ABS control unit hydraulically and electrically, it must be activated/
recognised.
•
Do a "KEY ON".
•
Check that the ABS warning light flashes rapidly.
•
Do a "KEY OFF" followed by a "KEY ON".
•
If activation has been successful, the warning light should come on and flash slowly.
•
In the event of a fault, with the diagnostic tool disconnected, the warning light should be
permanently lit.
•
Connect the diagnostic tool and check for errors.
ABS CONTROL UNIT CONNECTOR INSERTION PROCEDURE
•
The initial position of the connector coupling lever must be as indicated in the figures.
BRAK SYS - 342
RS 660 - Tuono 660