Yamaha FJR1300AS(X), Service Manual

Page: 487 / 754

IGNITION SYSTEM
8-10
EAS27140
TROUBLESHOOTING
The ignition system fails to operate (no spark or intermittent spark).
NOTE:
• Before troubleshooting, remove the following part(s):
1. Front cowling assembly
2. Fuel tank
3. T-bar
4. Throttle bodies
5. Storage compartment
NG
→
OK
↓
NG
→
OK
↓
NG
→
OK
↓
OK
→
NG
↓
NG
→
OK
↓
NG
→
OK
↓
NG
→
OK
↓
1. Check the fuses.
(Main and ignition)
Refer to “CHECKING THE FUS-
ES” on page 8-239.
Replace the fuse(s).
2. Check the battery.
Refer to “CHECKING AND
CHARGING THE BATTERY” on
page 8-240. • Clean the battery terminals.
• Recharge or replace the battery.
3. Check the spark plugs.
Refer to “CHECKING THE SPARK
PLUGS” on page 3-11. Re-gap or replace the spark plug(s).
4. Check the ignition spark gap.
Refer to “CHECKING THE IGNI-
TION SPARK GAP” on page 8-248. Ignition system is OK.
5. Check the spark plug caps.
Refer to “CHECKING THE SPARK
PLUG CAPS” on page 8-247. Replace the spark plug cap(s).
6. Check the ignition coils.
Refer to “CHECKING THE IGNI-
TION COILS” on page 8-247. Replace the ignition coil(s).
7. Check the crankshaft position sen-
sor.
Refer to “CHECKING THE CRANK-
SHAFT POSITION SENSOR” on
page 8-248.
Replace the crankshaft position sensor.