Yamaha FJR13AY 2009 Service Manual page 634

Fault code No. AbS_24
Order Item/components and probable
cause
1 Brake light operation.
• Burned-out brake light bulb
• Defective brake light relay
2 Connections
• ABS ECU coupler
• Brake light relay coupler
• Front brake light switch connectors
• Rear brake light switch coupler
• Front cowling wire harness coupler
3 Open or short circuit in wire harness
and/or front cowling wire harness.
4 Water inside switch.
ABS (ANTI-LOCK BRAKE SYSTEM)
Symptom Brake light signal is not received properly while
vehicle is traveling (brake light circuit, or front
or rear brake light switch circuit).
Check or maintenance job
• Check the brake light. Repair or
replace the brake light if neces-
sary.
Refer to "CHECKING THE
BULBS AND BULB SOCKETS"
on page 8-226.
• Check the brake light relay.
Refer to "CHECKING THE RE-
LAYS" on page 8-231.
• Check the coupler for any pins
that may be pulled out.
• Check the locking condition of
the coupler.
• If there is a malfunction, repair it
and connect the coupler se-
curely.
TIP
Turn the main switch to "OFF" be-
fore disconnecting or connecting
a coupler.
• Repair or replace if there is an
open or short circuit.
• Between ABS ECU coupler and
brake light relay coupler.
(yellow/green–yellow/green)
• Between rear brake light switch
coupler and ABS ECU coupler.
(brown/black–brown/black)
• Between front brake light switch
connectors and ABS ECU cou-
pler.
(green/yellow–green/yellow)
Use compressed air to blow out
the water.
8-151
Reinstatement
confirmation
method
• Check that
the brake light
comes on
when the front
or rear brake
is applied.
• Turn the main
switch to "ON"
and check
that the ABS
warning light
comes on for
2 seconds,
then goes off.
• Check that
the ABS
warning light
does not flash
when the
front, rear, or
both brakes
are applied for
2 seconds or
more.