Yamaha ROADLINER XV19SW, Service Manual

Page: 355 / 444

ELECTRIC STARTING SYSTEM
7-11
EAS27190
TROUBLESHOOTING
The starter motor fails to turn.
NOTE:
• Before troubleshooting, remove the following part(s):
1. Rider seat
2. Tool kit tray
3. Headlight assembly
NG
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OK
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NG
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OK
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OK
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NG
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NG
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OK
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OK
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OK
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OK
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OK
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1. Check the fuses.
(Main, ignition and ECU)
Refer to “CHECKING THE FUS-
ES” on page 7-75.
Replace the fuse(s).
2. Check the battery.
Refer to “CHECKING AND
CHARGING THE BATTERY” on
page 7-76. • Clean the battery terminals.
• Recharge or replace the battery.
3. Check the starter motor operation.
Refer to “CHECKING THE START-
ER MOTOR OPERATION” on page
7-85.
Starter motor is OK. Perform the electric
starting system troubleshooting, starting
with step 5.
4. Check the starter motor.
Refer to “CHECKING THE START-
ER MOTOR” on page 5-79. Repair or replace the starter motor.
5. Check the relay unit (starting circuit
cut-off relay).
Refer to “CHECKING THE RE-
LAYS” on page 7-79.
Replace the relay unit.
6. Check the relay unit (diode).
Refer to “CHECKING THE DI-
ODES” on page 7-81. Replace the relay unit.
7. Check the diode 1.
Refer to “CHECKING THE DI-
ODES” on page 7-81. Replace the diode 1.
8. Check the diode 2.
Refer to “CHECKING THE DI-
ODES” on page 7-81. Replace the diode 2.