If replacing restores the ignition operation, the fault
lies in the control unit, which obviously needs to be
replaced. In the event that the failure persists, it is
necessary to carry out checks on the alternator
and on the stator components as follows:
After a visual inspection of the connections, stator
and couplings, measurements are carried out on
the charging coil and the ignition coil using an Ohm
meter, capable of detecting resistance from 1 to
1000 ohm, as follows:
- Connect the instrument between the WHITE ca-
ble and the RED cable; there must be continuity
and ohmic value (430 to 480 ohm);
KEY:
1) White
2) Red
3) Green
- Connect the + terminal of the instrument with the
WHITE cable and the - terminal of the instrument
with the RED cable there must be continuity and
ohmic value (7 to 9 ohm).
KEY:
1) White
2) Red
3) Green
If failures are detected in the inspections of the charging coil and ignition coil, proceed to replace the
damaged parts.
If there is no tool available to check the stator, when it is established that the ignition problem is not
related to the power control unit nor to other visible causes (bad connections, damaged cables, dam-
aged spark plug), proceed to replace the complete stator. In relation to what described in the preceding
paragraphs we recommend, therefore, to include in the control tools an Ohm meter with the charac-
teristics outlined above.
C) IGNITION TIMING CHECK
APE TM Benzina General guidelines
GEN - 9
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