WORKSHOP MANUAL
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TROUBLESHOOTING OF THE ELECTRICAL
SYSTEM
CHAPTER
REVISION
FROM ...
PAGE
7.11
0
2018
2 of 3
PROBLEM
CAUSE
REMEDY
3. The dashboard switches on but, with
the key in position «START», the starter
does not turn or lacks power (poor start-
ing)
The battery is not supplying sufficient current
Recharge the battery
Badly earthed battery, or the starter relay or engine
not earthed
Check and put right
Starting not permitted
After checking that the conditions are met, check all the micros-
witches [see 7.3a] and the relative wiring
Malfunction in the electronic card
Try replacing the card with one that is known to work
Starter relay is faulty
Check that the starter relay is activated
4. The starter turns but the engine does
not start
No fuel flow
Check the leads for the carburettor solenoid valve opening con-
trol (if provided) or check the fuel stopcock and filter.
Impaired starter system
Check that the spark plug cap is positioned correctly
Check that the spark plug electrodes are clean and have the
correct gap
5. The starter continues to turn after
engine has started, and does not stop
when the key is removed
Mechanical difficulties with the contact breakers of
the starter relay
Replace the starter relay
Starter works erratically for mechanical or electrical
reasons taking excessive current and causing binding
of relay contacts
Check the starter
6. The starter operates as soon as the
key is in the «ON» position, and can be
turned off only by removing the key
Fault in the card
Replace the panel/board group
Starter block operating faults
Replace the block
7. The battery warning light does not come
on with the key in position «ON» but the
machine operates
Fault in the electronic circuit or in the signalling LED
Replace the panel/board group (
NOTE
: it is possible to com-
plete the work in any case, but the panel/board group must be
replaced as soon as possible)
8. The battery warning light remains on
Insufficient charge
Check that the charging cable has not detached
Check that there are no current leakages caused by cables with
damaged insulation
Check the recharge circuit
Charger fuse blown
Replace fuse (25 A) and check the recharge circuit
IMPORTANT
Faulty electronic cards must always be replaced without trying to repair them or re place single components.
