Charge System Inspection; Checking Charge Voltage; Alternator Loadless Operation Test - APRILIA ETV mille Workshop Manual

ELECTRICAL SYSTEM

6.3 CHARGE SYSTEM INSPECTION

6.3.1 CHECKING CHARGE VOLTAGE

!
Check battery voltage, see 2.4.2 (CHARGING THE
BATTERY).
!
Start the engine and rev it up to 4000 rpm.
!
Set the light switch to ≈
≈ ∆.
!
Set the light dip switch to ≈
!
Measure DC voltage across the positive (+) and
negative (–) battery terminals using a multimeter.
If the reading found is less than 13 V or more than 15 V:
!
Test alternator operation under no-load conditions and
check for continuity,
LOADLESS OPERATION
(ALTERNATOR CONTINUITY TEST); and test the
rectifier, see 6.3.5 (RECTIFIER TEST).
Key to the diagram
NOTE
See 6.1 (LAYOUT
COMPONENTS) for the location of the different
components.
1) Battery
2) Main fuses (30 A)
3) Generator
4) Rectifier
5) Ignition switch ( -
Correct charge voltage:
13 - 15 V(DC) at 4000 rpm.

6.3.2 ALTERNATOR LOADLESS OPERATION TEST

!
Remove the right-hand lower fairing, see 7.1.3
(REMOVING THE SIDE BODY PANELS).
!
Disconnect the three-way connector (1) (coloured
brown) of the rectifier wiring.
WARNING
Make sure to refit the connector (1) to its matching
connector on assembly.
!
Start the engine and rev it up to 4000 rpm.
!
Measure DC voltage across the three inner male
terminals [yellow (G) wires] using a multimeter. Test
across all terminals alternately.
Any reading below 60 V indicates a faulty alternator.
Replace the alternator.
Correct loadless voltage:
over 60 DC Volts at 4000 rpm.
6 - 6 -
00
∆ and the light dip switch to
∆.
see 6.3.2 (ALTERNATOR
TEST) and 6.3.4
OF ELECTRICAL
- - )
4
3
1
ETV mille
5
2
1
1
Release 00/2004 - 04