Front Wheel Sensor (Abnormal Pulse Period); Rear Wheel Sensor (Abnormal Pulse Period); Front Wheel Sensor (Open Or Short Circuit); Hydraulic Unit Assembly (Defective Abs Solenoid Power Circuit) - Yamaha R1 Series 2015 Service Manual

Fault code
No.
13* Front wheel sensor (abnor-
26* mal pulse period)
14* Rear wheel sensor (abnor-
27* mal pulse period)
15 Front wheel sensor (open or
short circuit)
16 Rear wheel sensor (open or
short circuit)
21 Hydraulic unit assembly
(defective solenoid drive cir-
cuit)
31 Hydraulic unit assembly
(defective ABS solenoid
power circuit)
Item
Front wheel sensor signal is
not received properly. (The
pulse period is abnormal
while the vehicle is traveling.)
Rear wheel sensor signal is
not received properly. (The
pulse period is abnormal
while the vehicle is traveling.)
Open or short circuit is
detected in the front wheel
sensor.
Open or short circuit is
detected in the rear wheel
sensor.
Solenoid drive circuit in the
hydraulic unit assembly is
open or short-circuited.
Power is not supplied to the
solenoid circuit in the
hydraulic unit assembly.
8-134
ABS (Anti-lock Brake System)
Symptom
• Foreign material adhered
• Incorrect installation of the
• Defective sensor rotor or
• Defective front wheel sen-
• Foreign material adhered
• Incorrect installation of the
• Defective sensor rotor or
• Defective rear wheel sen-
• Defective coupler between
• Open or short circuit in the
• Defective front wheel sen-
• Defective coupler between
• Open or short circuit in the
• Defective rear wheel sen-
• Defective hydraulic unit
• Blown ABS solenoid fuse
• Defective coupler between
• Open or short circuit in the
• Defective hydraulic unit
Check point
around the front wheel sen-
sor
front wheel
incorrect installation of the
rotor
sor or incorrect installation
of the sensor
around the rear wheel sen-
sor
rear wheel
incorrect installation of the
rotor
sor or incorrect installation
of the sensor
the front wheel sensor and
the hydraulic unit assembly
wire harness between the
front wheel sensor and the
hydraulic unit assembly
sor or hydraulic unit
assembly
the rear wheel sensor and
the hydraulic unit assembly
wire harness between the
rear wheel sensor and the
hydraulic unit assembly
sor or hydraulic unit
assembly
assembly
the battery and the hydrau-
lic unit assembly
wire harness between the
battery and the hydraulic
unit assembly
assembly