Troubleshooting - Yamaha R6 2009 Service Manual

EAS27150

TROUBLESHOOTING

The ignition system fails to operate (no spark or intermittent spark).
TIP
• Before troubleshooting, remove the following part(s):
1. Rider seat
2. Fuel tank
3. Air filter case
4. Side cowlings
5. Bottom cowlings
1. Check the fuses.
(Main and ignition)
Refer to "CHECKING THE FUSES"
on page 8-85.
OK↓
2. Check the battery.
Refer to "CHECKING AND
CHARGING THE BATTERY" on
page 8-86.
OK↓
3. Check the spark plugs.
Refer to "CHECKING THE SPARK
PLUGS" on page 3-9.
OK↓
4. Check the ignition spark gap.
Refer to "CHECKING THE IGNI-
TION COILS" on page 8-92.
NG↓
5. Check the ignition coils.
Refer to "CHECKING THE IGNI-
TION COILS" on page 8-92.
OK↓
6. Check the crankshaft position sen-
sor.
Refer to "CHECKING THE
CRANKSHAFT POSITION SEN-
SOR" on page 8-93.
OK↓
7. Check the main switch.
Refer to "CHECKING THE
SWITCHES" on page 8-81.
OK↓
NG→
Replace the fuse(s).
NG→
• Clean the battery terminals.
• Recharge or replace the battery.
NG→
Re-gap or replace the spark plug(s).
OK→
Ignition system is OK.
NG→
Replace the ignition coil(s).
NG→
Replace the crankshaft position sen-
sor.
NG→
Replace the main switch.
8-5
IGNITION SYSTEM