Yamaha YZFR1Y(C) 2009 Service Manual page 398

EAS27190
TROUBLESHOOTING
The starter motor fails to turn.
TIP
• Before troubleshooting, remove the following part(s):
1. Rider seat
2. Passenger seat
3. Heat protector
4. Side cowlings
1. Check the fuses.
(Main and ignition)
Refer to "CHECKING THE FUSES"
on page 8-109.
OK↓
2. Check the battery.
Refer to "CHECKING AND
CHARGING THE BATTERY" on
page 8-109.
OK↓
3. Check the starter motor operation.
Refer to "CHECKING THE
STARTER MOTOR OPERATION"
on page 8-118.
NG↓
4. Check the starter motor.
Refer to "CHECKING THE
STARTER MOTOR" on page 5-48.
OK↓
5. Check the relay unit (starting circuit
cut-off relay).
Refer to "CHECKING THE
RELAYS" on page 8-113.
OK↓
6. Check the relay unit (diode).
Refer to "CHECKING THE RELAY
UNIT (DIODE)" on page 8-115.
OK↓
7. Check the starter relay.
Refer to "CHECKING THE
RELAYS" on page 8-113.
OK↓
ELECTRIC STARTING SYSTEM
NG→
Replace the fuse(s).
NG→
• Clean the battery terminals.
• Recharge or replace the battery.
OK→
Starter motor is OK. Perform the elec-
tric starting system troubleshooting,
starting with step 5.
NG→
Repair or replace the starter motor.
NG→
Replace the relay unit.
NG→
Replace the relay unit.
NG→
Replace the starter relay.
8-11