APRILIA Tuono V4 1100 Factory Service Station Manual page 159

Tuono V4 1100 Factory
•
Effective resistance stage 1 = 0.62-0.47 = 0.15 Ohm
•
If there is a significant difference between one stage and another (other than 0.15 Ohm),
this means that the alternator is defective and must be replaced.
Winding stage
Stage 1
Stage 2
Stage 3
Zero load voltage
•
Disconnect the three-way connector (1);
•
For a correct detection of the alternator voltage, a measurement must be carried out using
alternatively the 3 engine side connector pins: stage "1" (pin 1-2), stage "2" (pin 1-3), stage
"3" (pin 2-3)
•
Take the measurements;
•
If there is a significant difference between one stage and another (other than 15 V), this
means that the alternator is defective and must be replaced.
CAUTION
WITH THE ENGINE HOT THE VALUES RECORDED ARE ON AVERAGE 4-5 V LESS THAN THOSE
DETECTED WITH THE ENGINE COLD.
Vm line-to-line voltage Reference values (V rms)
R
ESISTANCE MEASURE
Ambient temperature (ohm)
0.15 - 0.20
0.15 - 0.20
0.15 - 0.20
Z
ERO LOAD VOLTAGE
rpm
Afterwards heat stabilisation (ohm)
0.25 - 0.30
0.25 - 0.30
0.25 - 0.30
2000 4000
22 - 27 46 - 51
Electrical system
6000 8000
69 - 74 92 - 97
ELE SYS - 159