Yamaha N MAX GPD150-A 2015 Service Manual page 398

Fault code No.
18* Rear wheel sensor (missing
46* pulses)
21 Hydraulic unit assembly (de-
fective solenoid drive circuit)
24 Brake light switch or brake
light
31 Hydraulic unit assembly (ab-
normal ABS solenoid power
supply)
32 Hydraulic unit assembly
(short circuit in ABS solenoid
power supply circuit)
33 Hydraulic unit assembly (ab-
normal ABS motor power
supply)
34 Hydraulic unit assembly
(short circuit in ABS motor
power supply circuit)
ABS (ANTI-LOCK BRAKE SYSTEM)
Item
Rear wheel sensor signal is
not received properly. (Miss-
ing pulses are detected in
the signal while the vehicle is
traveling.)
Solenoid drive circuit in the
hydraulic unit assembly is
open or short-circuited.
Brake light signal is not re-
ceived properly while the ve-
hicle is traveling. (Brake light
circuit, or front or rear brake
light switch circuit)
Power is not supplied to the
solenoid circuit in the hy-
draulic unit assembly.
Short circuit is detected in
the solenoid power supply
circuit in the hydraulic unit
assembly.
Power is not supplied to the
motor circuit in the hydraulic
unit assembly.
Short circuit is detected in
the motor power supply cir-
cuit in the hydraulic unit as-
sembly.
8-73
Symptom
• Foreign material adhered
• Incorrect installation of the
• Defective sensor rotor or
• Defective rear wheel sen-
• Defective hydraulic unit as-
• Defective signaling system
• Defective coupler between
• Open or short circuit in the
• Defective hydraulic unit as-
• Blown ABS solenoid fuse
• Defective coupler between
• Open or short circuit in the
• Defective hydraulic unit as-
• Defective hydraulic unit as-
• Blown ABS motor fuse
• Defective coupler between
• Open or short circuit in the
• Defective hydraulic unit as-
• Defective hydraulic unit as-
Check point
around the rear wheel sen-
sor
rear wheel
incorrect installation of the
rotor
sor or incorrect installation
of the sensor
sembly
(brake light or brake light
switch)
the signaling system (brake
light or brake light switch)
and the hydraulic unit as-
sembly
wire harness between the
signaling system (brake
light or brake light switch)
and the hydraulic unit as-
sembly
sembly
the battery and the hydrau-
lic unit assembly
wire harness between the
battery and the hydraulic
unit assembly
sembly
sembly
the battery and the hydrau-
lic unit assembly
wire harness between the
battery and the hydraulic
unit assembly
sembly
sembly