Troubleshooting - Yamaha SR400 2014 Service Manual

EAS27290

TROUBLESHOOTING

• Any of the following fail to light: turn signal light, brake light or an indicator light.
• The horn fails to sound.
TIP
• Before troubleshooting, remove the following part(s):
1. Seat
2. Side cover (left)
3. Fuel tank
4. Fuel pump case
1. Check the fuses.
(Main, signaling system and parking
lighting)
Refer to "CHECKING THE FUSES"
on page 7-59.
OK
2. Check the battery.
Refer to "CHECKING AND
CHARGING THE BATTERY" on
page 7-60.
OK
3. Check the main switch.
Refer to "CHECKING THE
SWITCHES" on page 7-55.
OK
4. Check the entire signaling system
wiring.
Refer to "CIRCUIT DIAGRAM" on
page 7-15.
OK
Check the condition of each of the sig-
naling system circuits. Refer to
"Checking the signaling system".
Checking the signaling system
The horn fails to sound.
1. Check the horn switch.
Refer to "CHECKING THE
SWITCHES" on page 7-55.
OK
2. Check the horn.
Refer to "CHECKING THE HORN"
on page 7-68.
OK
Replace the fuse(s).
NG
• Clean the battery terminals.
• Recharge or replace the battery.
NG
Replace the main switch.
NG
Properly connect or repair or replace the
signaling system wiring.
NG
Replace the left handlebar switch.
NG
Replace the horn.
NG
7-17
SIGNALING SYSTEM