Troubleshooting - Yamaha R15 2022 Service Manual

EAS30492

TROUBLESHOOTING

The ignition system fails to operate (no spark or intermittent spark).
TIP
• Before troubleshooting, remove the following part(s):
1. Passenger seat and rider seat
2. Side cover (left and right)
3. Fuel tank cover (left and right)
4. Upper panel (left and right)
5. Upper side cowling (left and right)
6. Lower side cowling (left and right)
1. Check the fuses.
(Main fuse)
Refer to "CHECKING THE FUSES"
on page 8-142.
OK ↓
2. Check the battery.
Refer to "CHECKING AND
CHARGING THE BATTERY" on
page 8-143.
OK ↓
3. Check the spark plug.
Refer to "CHECKING THE SPARK
PLUG" on page 3-8.
OK ↓
4. Check the ignition spark gap.
Refer to "CHECKING THE IGNI-
TION SPARK GAP" on page 8-148.
NG ↓
5. Check the spark plug cap.
Refer to "CHECKING THE SPARK
PLUG CAP" on page 8-147.
OK ↓
6. Check the ignition coil.
Refer to "CHECKING THE IGNI-
TION COIL" on page 8-148.
OK ↓
7. Check the crankshaft position sen-
sor.
Refer to "CHECKING THE CRANK-
SHAFT POSITION SENSOR" on
page 8-149.
OK ↓
IGNITION SYSTEM
NG →
Replace the fuse(s).
NG →
• Clean the battery terminals.
• Recharge or replace the battery.
NG →
Re-gap or replace the spark plug.
OK →
Ignition system is OK.
NG →
Replace the spark plug cap.
NG →
Replace the ignition coil.
NG →
Replace the crankshaft position sensor/
stator assembly.
8-3
ELEC – +