Volvo Penta D1-13 Workshop Manual page 38

30-2 Fault Tracing
36
Battery warning
Tachometer
The tachometer LCD screen will show a flashing bat-
tery icon and the alarm buzzer sound.
Alarm display
The battery indication flashes in the alarm display +
audible warning.
Fault tracing
Fault condition 1
The voltage input at the MDI is 15 V or higher for more
than 30 seconds.
Possible reason
Faulty alternator regulator.
Suitable action
1 Try another alternator.
Fault condition 2
The voltage input at the MDI is 13 V or less for more
than 10 seconds (engine running).
Possible reason
• Too slack alternator belt tension.
• Faulty assembled connectors.
• Poor condition of the cables in the charging system.
Faulty excitation voltage/current to the alternator.
•
The alternator does not charge.
Damaged or worn alternator brushes.
•
• Faulty alternator regulator.
Suitable action
1 Check the alternator belt tension.
2 Check that all connectors at the alternator and at
the battery are correctly assembled.
3 Check the conditions of all cables in the charging
system.
4 Check that the alternator recieves correct excitation
voltage/current.
5 Check the brushes length and condition.
6 Try another alternator.
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