Yamaha R15 2022 Service Manual page 352

2. Check the horn.
Refer to "CHECKING THE HORN"
on page 8-151.
OK ↓
3. Check the entire signaling system
wiring.
Refer to "CIRCUIT DIAGRAM" on
page 8-16.
OK ↓
This circuit is OK.
The tail/brake light fails to come on.
1. Check the front brake light switch.
Refer to "CHECKING THE
SWITCHES" on page 8-139.
OK ↓
2. Check the rear brake light switch.
Refer to "CHECKING THE
SWITCHES" on page 8-139.
OK ↓
3. Check the entire signaling system
wiring.
Refer to "CIRCUIT DIAGRAM" on
page 8-16.
OK ↓
Replace the tail/brake light assembly.
The turn signal light, turn signal indicator light or both fail to blink.
1. Check the turn signal light bulb and
socket.
Refer to "CHECKING THE BULBS
AND BULB SOCKETS" on page
8-141.
OK ↓
2. Check the turn signal switch.
Refer to "CHECKING THE
SWITCHES" on page 8-139.
OK ↓
3. Check the hazard switch.
Refer to "CHECKING THE
SWITCHES" on page 8-139.
OK ↓
SIGNALING SYSTEM
NG →
Replace the horn.
NG →
Properly connect or replace the wire har-
ness.
NG →
Replace the front brake light switch.
NG →
Replace the rear brake light switch.
NG →
Properly connect or replace the wire har-
ness.
NG →
Replace the turn signal light bulb, socket
or both.
NG →
The turn signal switch is faulty. Replace
the left handlebar switch.
NG →
Replace the handlebar switch (left).
8-19
ELEC – +