Malaguti Dune X 125, Service Station Manual

Page: 77 / 272

Dune 125 - Dune X 125 - Euro 4
Electrical system
ELE SYS - 77

Effective resistance stage 1 = 0.67-0.47 = 0.20 Ohm

If there is a significant difference between one stage and another (other than 0.20 Ohm),
this means that the alternator is defective and must be replaced.
R
ESISTANCE MEASUREMENT
Winding stage Ambient temperature (ohm) Afterwards heat stabilisation (ohm)
Stage 1 0.15 - 0.30 0.20 - 0.35
Stage 2 0.15 - 0.30 0.20 - 0.35
Stage 3 0.15 - 0.30 0.20 - 0.35
Empty voltage

Disconnect the six-way connector (1).

Make a special cable harness using
two connectors that can be coupled
with those on the alternator side and
the chassis side of the motorcycle. The
outgoing wires from pins 1 and 5 must
maintain the continuity of the positive
and negative of the pick-up, otherwise
the engine will not start; while the out-
going cables from pins 2, 4, 6 (alterna-
tor side) must have the ends free in
order to perform the appropriate ac-
tion.
CAUTION
KEEP THE THREE ENDS OF THE FREE CABLES WELL
SEPARATED TO AVOID DANGEROUS SHORT CIRCUITS.

For a correct detection of the alternator voltage, the measurements must be carried out using
alternatively the 3 ends of the free cables: stage "1" (outgoing cables from pins 2 and 4),
stage "2" (outgoing cables from pins 2 and 6), stage "3" (outgoing cables from pins 4 and
6).

Start the engine and carry out the measurement.