APRILIA RSV4 1100 Factory Service Station Manual page 208

Electrical system
the Yellow/Red cable: if there is continuity with the ground, restore the wiring harness; if ok,
turn the key to OFF and perform the VEHICLE connector and engine-vehicle wiring harness
connector check: if not ok, restore; if ok, check the continuity of the Yellow/Pink cable be-
tween the switch connector and the VEHICLE connector PIN C7 and PIN 78: if not ok, restore
the wiring harness; if ok, replace the Marelli control unit.
•
Indication on the diagnostic tool always RUN: disconnect the connector and check with the
switch in STOP of there is continuity between the two cables of the switch: if there is, replace
the switch, if there is no continuity it means that, with the key ON, the Yellow/Pink cable
(between the switch and PIN C7 of the engine-vehicle wiring harness connector or between
the latter and PIN 78 of the control unit connector) is in short circuit to positive: restore the
wiring harness.
Butterfly valve in exhaust
Function
Used to reduce the noise at the exhaust. The ex-
haust valve is controlled as follows:
•
With engine off: completely closed 0%
•
With engine on: depending on the gear
engaged, the exhaust valve has differ-
ent opening values, according to the
engine speed and load. Above 6,000
rpm, the valve is always open, except
for neutral.
•
With the motorcycle at a standstill an
with the gearbox to neutral, the valve
stays closed until 7,000 rpm.
Operation / Operating principle
The system consists of a throttle valve with return
spring on the exhaust. The valve is closed by 2
cables operated by an electric motor which is elec-
trically connected to the instrument panel. The
logic and the motor control, however, reside in the
Marelli injection control unit that dialogues with the
instrument panel via the CAN.
Level in electrical circuit diagram:
Exhaust valve
Position:
ELE SYS - 208
RSV4 1100 Factory