Yamaha R15 2022 Service Manual page 448

Fault code
Item
No.
24 Brake light switch or
tail/brake light
31 Hydraulic unit as-
sembly (abnormal
ABS solenoid pow-
er supply)
32 Hydraulic unit as-
sembly (short circuit
in ABS solenoid
power supply circuit)
ABS (ANTI-LOCK BRAKE SYSTEM)
Symptom
Brake light signal is
not received proper-
ly while the vehicle
is traveling. (Brake
light circuit, or front
or rear brake light
switch circuit)
Power is not sup-
plied to the solenoid
circuit in the hydrau-
lic unit assembly.
Short circuit is de-
tected in the sole-
noid power supply
circuit in the hydrau-
lic unit assembly.
Check point
• Defective signaling
system (tail/brake
light or brake light
switch)
• Defective coupler
between the sig-
naling system (tail/
brake light or
brake light switch)
and the hydraulic
unit assembly
• Open or short cir-
cuit in the wire har-
ness between the
signaling system
(tail/brake light or
brake light switch)
and the hydraulic
unit assembly
• Defective hydrau-
lic unit assembly
• Blown ABS sole-
noid fuse
• Defective coupler
between the bat-
tery and the hy-
draulic unit
assembly
• Open or short cir-
cuit in the wire har-
ness between the
battery and the hy-
draulic unit assem-
bly
• Defective hydrau-
lic unit assembly
• Defective hydrau-
lic unit assembly
8-115
ELEC –
Fail-safe system
Diag-
Start- Driving
nostic
ing the the ve-
code
engine hicle
Able Able —
Able Able —
Able Able —
+