APRILIA SHIVER 900 Service Station Manual page 122

Electrical system
RPM
RMS DC current (Arms) (average of the 3 stage
currents)
Voltage on battery poles with engine speed always between 3000 - 5000 RPM
•
Start the engine, after about one minute of operating bring the speed to 3000-5000 RPM,
then measure with a tester the voltage at the battery poles that must always be between
13V and 15V. Otherwise, if the correct operation of the alternator has already been checked,
replace the regulator.
CAUTION
PERFORM THE CHECK DESCRIBED ABOVE WITH A BATTERY IN GOOD CONDITION (START
VOLTAGE ABOUT 13V) MAKING SURE THAT THERE ARE NO ELEMENTS IN THE SHORT CIR-
CUIT.
Start-up system check
Function
Communicates to the control unit the will to start-
up the engine.
Operation / Operating principle
Press the start-up button to close the specific cir-
cuit taking the PIN 58 of the control unit to a voltage
equal to zero (ground closing).
Level in electrical circuit diagram:
Start enable switches
Position:
•
on the vehicle: Right hand light switch.
•
connector: behind the steering head-
stock, inside the protection case (black
colour, 4 way).
Electrical specifications:
•
key released: open circuit
•
key pressed: closed circuit
Pin out:
1. - Green/pink colour from the RH lights switch to
the clutch switch - Section 0.5
2. Voltage + 5V - Pink/Brown colour from the RH
lights switch to 7SM control unit PIN 58 (engine
start) - Section 0.5
ELE SYS - 122
C
OLD SHORT CIRCUIT CURRENT
2000
26 - 31
4000 6000
26 - 31 26 - 31
SHIVER 900
8000
26 - 31