Yamaha FJR13AG Service Manual page 523

Checking the signaling system
The horn fails to sound.
1. Check the horn switch.
Refer to "CHECKING THE
SWITCHES" on page 8-247.
OK ↓
2. Check the entire signaling system
wiring.
Refer to "CIRCUIT DIAGRAM
(FJR13AG)" on page 8-41 or refer
to "CIRCUIT DIAGRAM
(FJR13ESG)" on page 8-43.
OK ↓
Replace the horn.
The brake light fails to come on.
1. Check the front brake light switch.
Refer to "CHECKING THE
SWITCHES" on page 8-247.
OK ↓
2. Check the rear brake light switch.
Refer to "CHECKING THE
SWITCHES" on page 8-247.
OK ↓
3. Check the brake switch relay.
Refer to "CHECKING THE RE-
LAYS" on page 8-254.
OK ↓
4. Check the brake light relay.
Refer to "CHECKING THE RE-
LAYS" on page 8-254.
OK ↓
5. Check the entire signaling system
wiring.
Refer to "CIRCUIT DIAGRAM
(FJR13AG)" on page 8-41 or refer
to "CIRCUIT DIAGRAM
(FJR13ESG)" on page 8-43.
OK ↓
Replace the tail/brake light assembly.
SIGNALING SYSTEM
NG →
• The horn switch is faulty.
• Replace the left handlebar switch.
NG →
Properly connect or replace the wire har-
ness.
NG →
Replace the front brake light switch.
NG →
Replace the rear brake light switch.
NG →
Replace the brake switch relay.
NG →
Replace the brake light relay.
NG →
Properly connect or replace the wire har-
ness.
8-46