Yamaha MBK XMAX 2014 Service Manual page 427

Fault code No.
Item
Symptom
Item/components and probable
Order
cause
3 Defective sensor rotor or incorrect in-
stallation of the rotor
4 Defective rear wheel sensor or incor-
rect installation of the sensor
TIP
• If the rear brake ABS operates continuously for 20 seconds or more, fault code No. 27 will be record-
ed. If the rear brake ABS operates continuously for 36 seconds or more, fault code No. 14 will be re-
corded.
• Vehicle possibly ridden on uneven roads.
Fault code No.
Item
Symptom
Item/components and probable
Order
cause
1 Defective coupler between the front
wheel sensor and the hydraulic unit
assembly
ABS (ANTI-LOCK BRAKE SYSTEM) (for YP250RA)
14
27
Rear wheel sensor (abnormal pulse period)
Rear wheel sensor signal is not received properly. (The pulse
period is abnormal while the vehicle is traveling.)
15
Front wheel sensor (open or short circuit)
Open or short circuit is detected in the front wheel sensor.
Check or maintenance job
Check the surface of the sensor rotor for damage.
Replace the sensor rotor if there is visible damage.
Refer to "MAINTENANCE OF THE REAR WHEEL
SENSOR ROTOR (for YP250RA)" on page 4-29.
Check the wheel sensor for damage and the in-
stalled condition of the sensor. Repair or replace
the wheel sensor if necessary.
Refer to "MAINTENANCE OF THE REAR WHEEL
SENSOR (for YP250RA)" on page 4-87.
Check or maintenance job
• 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 securely.
TIP
Turn the main switch to "OFF" before disconnecting
or connecting a coupler.
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