Introduction
The clutch button is located on the clutch lever. Together with the signal from the side stand button and the neutral signal generated by the gear sensor (transmitted to the engine control unit over the can line), the clutch lever position signal is used to enable or disable engine start.
The following table indicates the only conditions in which starter motor
activation and, as a result, engine start, are
permitted:
If a gear is engaged with the side stand down, however, the engine switches off.
The engine control unit recognises the idle speed state when engine speed drops below a certain threshold and when the ecu itself receives the clutch lever pulled and/or gearbox in neutral signal (generated by gear sensor).
Component assembling position
The clutch button is located under the lever.
Location of clutch button connection.
Connection wiring diagram
Ccm engine control connection, s clutch button. 2 Ground, black - bk, 1 white - w.
In the event of fault
In the event of a clutch button fault, the operating conditions described in the introduction are not met.
Fault codes generated and possible correlated faults
The engine control unit generates no fault code in the event of a clutch button fault.
No errors are indicated on the dashboard.
Possible correlated faults: the safety conditions required to enable engine start are not met, incorrect idle speed (target idle speed is 1350 rpm with engine stabilised at operating temperature). Check:
Note
Check integrity of electric circuit - short-circuit to vdc = with dashboard on, using a voltmeter, a voltage is measured between the wire tested and ground
Check integrity of electric circuit - short-circuit to ground = with the battery cables disconnected, using an ohmmeter, continuity is detected between the wire tested and ground
Check integrity of electric circuit - open circuit = with the battery cables disconnected, using an ohmmeter, no continuity is detected between the two ends of the wire tested.
The dds instrument can be used to display the activation state of the clutch button.
If none of the aforementioned tests identify the problem and the clutch button is in proper working order, replace the engine control unit.
Component replacement methods
No special measures are necessary in order to replace the clutch button.
Checking valve lift
Set the engine to the configuration described for the "checking and adjusting
the valve clearances", previously indicated.
Position the tool 88765.1518 On the cylinder head: the part marked "a" should be
on the intake side and the part
marked "s" should be on the exhaust side.
Seat the pl ...
Tips for use on the track
We recommend level 8 be used for a couple of full laps (to
allow the tyres to warm up) in order to get used to the
system. Then try levels 7, 6, etc., In succession until you
identify the dtc intervention level that suits you best (always
try each level for at least two laps to allow the tyres t ...
Removal of the rear brake disc
Remove the rear eccentric hub (sec. 7 - 13, Removal of the rear wheel
eccentric hub and rear wheel shaft).
Undo and remove the four fixing screws (13) of the brake disk to the wheel axle
and remove the rear brake disk (14).
Loosen the four screws (24) and remove the rear phonic wheel (25). ...