Yamaha MBK XMAX 2014 Service Manual page 429

Fault code No.
Item
Symptom
Item/components and probable
Order
cause
1 Defective coupler between the rear
wheel sensor and the hydraulic unit
assembly
2 Open or short circuit in the wire har-
ness between the rear wheel sensor
and the hydraulic unit assembly
3 Defective rear wheel sensor or hy-
draulic unit assembly
ABS (ANTI-LOCK BRAKE SYSTEM) (for YP250RA)
16
Rear wheel sensor (open or short circuit)
Open or short circuit is detected in the rear wheel sensor.
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.
• Check for continuity between the black terminal
"1" and the black terminal "4" and between the
white terminal "2" and the white terminal "5".
• If there is no continuity, the wire harness is defec-
tive. Replace the wire harness.
• Check that there is no short circuit between the
black terminal "1" and the white terminal "2" and
between the black terminal "4" and the white ter-
minal "5".
• If there is continuity, the wire harness is defective.
Replace the wire harness.
• Check that there is no short circuit between the
black/white terminal "3" and the black terminal "4"
and between the black/white terminal "3" and the
white terminal "5".
• If there is short circuit, the wire harness is defec-
tive. Replace the wire harness.
1 2
R
R/L B W B W W W/R
G/Y Sb P Br/W G/L G/W B/W
6. ABS ECU
7. Wheel sensor
If the above items were performed and no malfunc-
tions were found, the wheel sensor or hydraulic unit
assembly is defective. Replace the wheel sensor or
hydraulic unit assembly.
Refer to "REAR SHOCK ABSORBER ASSEM-
BLIES AND SWINGARM" on page 4-85 and "ABS
(ANTI-LOCK BRAKE SYSTEM) (for YP250RA)" on
page 4-62.
8-112
4 5
B
W Gy
B W
W/Y
B/W
3
7
6