Troubleshooting - Yamaha YZF-R15 Service Manual

TROUBLESHOOTING

• Any of the following fail to light: turn signal lights, brake light or indicator lights.
• The horn fails to sound.
• The fuel gauge fails to operate.
NOTE:
• Before troubleshooting, remove the following part(s):
1. Seat
2. Fuel tank
3. Headlight
1. Check the fuse.
Refer to "CHECKING THE FUSE"
on page 8-61.
OK ↓
2. Check the battery.
Refer to "CHECKING AND
CHARGING THE BATTERY " on
page 8-61.
OK ↓
3. Check the main switch.
Refer to "CHECKING THE
SWITCHES" on page 8-57.
OK ↓
4. Check the entire signaling system
wiring.
Refer to "CIRCUIT DIAGRAM" on
page 8-19.
OK ↓
Check the condition of each of the sig-
naling system circuits. Refer to
"Checking the signaling system".
Check the signaling system
The horn fails to sound.
1. Check the horn switch.
Refer to "CHECKING THE
SWITCHES" on page 8-57.
OK ↓
2. Check the horn.
Refer to "CHECKING THE HORN"
on page 8-70.
OK ↓
NG →
Replace the fuse.
NG →
• Clean the battery terminals.
• Recharge or replace the battery.
NG →
Replace the main switch.
NG →
Properly connect or repair the signaling
system wiring.
NG →
The horn switch is faulty. Replace the left
handlebar switch.
NG →
Replace the horn.
8-21
SIGNALING SYSTEM