Yamaha MBK X-MAX 300 2017, Service Manual

Page: 398 / 462

ABS (ANTI-LOCK BRAKE SYSTEM)
8-93
* The fault code number varies according to the vehicle conditions.
Fault code No. 11, 25
TIP
With the front wheel stopped, the rear wheel was rotated for longer than about 20 seconds (fault code
No. 11) or for longer than about 2 seconds (fault code No. 25).
54 Hydraulic unit assembly (de-
fective ABS solenoid and
ABS motor power supply cir-
cuits) Abnormality is detected in
the solenoid or motor power
supply circuit in the hydraulic
unit assembly. • Defective battery
• Defective coupler between
the battery and the hydrau-
lic unit assembly
• Open or short circuit in the
wire harness between the
battery and the hydraulic
unit assembly
• Defective charging system
• Defective hydraulic unit as-
sembly
55 Hydraulic unit assembly (de-
fective ABS ECU) Abnormal data is detected in
the hydraulic unit assembly. • Defective hydraulic unit as-
sembly
56 Hydraulic unit assembly (ab-
normal internal power sup-
ply) Abnormality is detected in
the power supply circuit in
the hydraulic unit assembly. • Defective hydraulic unit as-
sembly
63 Front wheel sensor power
supply (voltage of power
supply is low) Power voltage supplied from
the ABS ECU to the front
wheel sensor is too low. • Short circuit in the wire har-
ness between the front
wheel sensor and the hy-
draulic unit assembly
• Defective front wheel sen-
sor
• Defective hydraulic unit as-
sembly
64 Rear wheel sensor power
supply (voltage of power
supply is low) Power voltage supplied from
the ABS ECU to the rear
wheel sensor is too low. • Short circuit in the wire har-
ness between the rear
wheel sensor and the hy-
draulic unit assembly
• Defective rear wheel sen-
sor
• Defective hydraulic unit as-
sembly
Fault code No. Item Symptom Check point
Fault code No.
11
25
Item Front wheel sensor (intermittent pulses or no pulses)
Symptom
Front wheel sensor signal is not received properly. (Pulses are not re-
ceived or are received intermittently while the vehicle is traveling.)
Order Item/components and probable cause Check or maintenance job
1 Foreign material adhered around the front
wheel sensor Check the surface of the sensor rotor and wheel sensor
for foreign material, such as metal particles.
Clean the sensor rotor and wheel sensor if necessary.
2 Incorrect installation of the front wheel Check the components for looseness, distortion, and
bends.
Refer to “CHECKING THE FRONT WHEEL” on page
4-29.