Checking The Recharging System; Checking The Recharging Voltage; Checking The Open-Circuit; Alternator Operation - APRILIA RST mille Futura 2001 Service Manual

ELECTRICAL SYSTEM

6.3 CHECKING THE RECHARGING SYSTEM

6.3.1 CHECKING THE RECHARGING VOLTAGE

Check the battery voltage, see 2.4.2 (RECHARGING
THE BATTERY).
Start the engine and rev it to 4000 rpm.
Set the light switch to "
Set the light dimmer to "
Use a tester to measure the DC voltage between the
positive (+) and negative (–) terminals of the battery.
If the tester indicates voltages below 13 V or above 15 V:
Check the open-circuit operation and continuity of the
alternator, see 6.3.2
CIRCUIT ALTERNATOR
(CHECKING ALTERNATOR CONTINUITY) and the
voltage regulator, see 6.3.5
VOLTAGE REGULATOR).
Wiring diagram legend
NOTE
For the positions of the components, see 6.1
(LOCATIONS OF ELECTRICAL COMPONENTS).
1) Battery
2) Main fuses (30 A)
3) Alternator
4) Voltage regulator
5) Ignition switch ( -
Standard charge voltage: 13 - 15 V (DC) at 4000 rpm.
6.3.2 CHECKING

ALTERNATOR OPERATION

Remove the left lower fairing, see 7.1.33 (REMOVING
THE LOWER FAIRING).
Disconnect the three-way connector (1) (brown)
voltage regulator cables.
WARNING
When reassembling,
connector (1) is properly connected.
Start the engine and rev it to 4000 rpm.
Use a tester to measure the voltage (AC) from the
three internal male terminals [yellow cables (G)] in
rotation.
If the output voltage is less than 60 V, the alternator is
faulty and must be replaced.
Standard open-circuit voltage:
greater than 60 V (AC) at 4000 rpm.
6
- 6 -
00
" and the light dimmer to "
".
(CHECKING THE OPEN-
OPERATION), 6.3.4
(CHECKING
- - )
THE OPEN-CIRCUIT
make sure the electrical
" .
THE
3
RST mille
4
1
1
Release 00/2002 - 03
USA
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2
1