Yanmar 6LY3 series Service Manual page 297

Troubleshooting by Symptom
12/05
Trouble Symptom
Starting trouble
The starting motor does not
rotate and the engine cannot
start.
6LY3 Service Manual
Causes
The battery switch is off.
The battery voltage is low
(discharging battery).
Battery will not charge.
Fuse burned out.
(IGN. PANEL: 10A)
Fuse burned out.
(ECU: 20A)
Fuse burned out.
(STARTER RELAY: 50A)
Fuse burned out.
(IGN. 1st Station: 5A)
Fuse burned out.
(IGN. 2nd Station: 5A)
© 2007 Yanmar Marine International
Corrective Action
Turn on the battery switch.
Check the electrolyte level and
the specific gravity of battery.
Charge the battery or replace.
Check for a short.
Check the wires between the
alternator and the battery.
Check the tension of V-belt.
Check the alternator.
Replace the fuse.
Replace the fuse.
Replace the fuse.
Replace the fuse.
Replace the fuse.
TROUBLESHOOTING
Remarks
See Battery Cables on
page 12-3.
See Checking the Electrolyte
Level on page 12-4.
See Charging the Battery on
page 12-5.
See Alternator Wiring Diagram
on page 11-8.
See Alternator Wiring Diagram
on page 11-8.
See Check the V-Belt Tension
on page 4-25.
See Alternator on page 11-1.
See Fuse Chart on page 12-16
and Troubleshooting Fuses,
Relays and Harnesses on
page 13-21.
See Fuse Chart on page 12-16
and Troubleshooting Fuses,
Relays and Harnesses on
page 13-21.
See Fuse Chart on page 12-16
and Troubleshooting Fuses,
Relays and Harnesses on
page 13-21.
See Fuse Chart on page 12-16
and Troubleshooting Fuses,
Relays and Harnesses on
page 13-21.
See Fuse Chart on page 12-16
and Troubleshooting Fuses,
Relays and Harnesses on
page 13-21.
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