Troubleshooting - Yamaha YFM70RY Service Manual

EAS27290

TROUBLESHOOTING

• Any of the following fail to light: warning light, brake light or an indicator light.
TIP
• Before troubleshooting, remove the following part(s):
1. Seat
2. Fuel tank top panel
3. Front panel
4. Front fender
1. Check the fuses.
(Main, ignition and signaling sys-
tem)
Refer to "CHECKING THE FUS-
ES" on page 8-61.
OK ↓
2. Check the battery.
Refer to "CHECKING AND
CHARGING THE BATTERY" on
page 8-62.
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".
Checking the signaling system
The brake light fails to come on.
1. Check the front brake light switch.
Refer to "CHECKING THE
SWITCHES" on page 8-57.
OK ↓
2. Check the rear brake light switch.
Refer to "CHECKING THE
SWITCHES" on page 8-57.
OK ↓
NG →
Replace the fuse(s).
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 →
Replace the front brake light switch.
NG →
Replace the rear brake light switch.
8-21
SIGNALING SYSTEM