Yamaha TRACER MT09TRA Service Manual page 501

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
Order Item/components and probable cause
1 Defective coupler between the front wheel
sensor and the hydraulic unit assembly
2 Open or short circuit in the wire harness
between the front wheel sensor and the
hydraulic unit assembly
3 Defective front wheel sensor or hydraulic
unit assembly
ABS (ANTI-LOCK BRAKE SYSTEM)
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 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 cou-
pler securely.
TIP
Turn the main switch to "OFF" before disconnecting or
connecting a coupler.
• Check for continuity between the white terminal "1"
and the white terminal "4" and between the black ter-
minal "2" and the black terminal "5".
• If there is no continuity, the wire harness is defective.
Replace the wire harness.
• Check that there is no short circuit between the white
terminal "1" and the black terminal "2" and between
the white terminal "4" and the black terminal "5".
• If there is short circuit, the wire harness is defective.
Replace the wire harness.
• Check that there is no short circuit between the
black/yellow terminal "3" and the white terminal "4" and
between the black/yellow terminal "3" and the black
terminal "5".
• If there is short circuit, the wire harness is defective.
Replace the wire harness.
6. ABS ECU
7. Wheel sensor
If the above items were performed and no malfunctions
were found, the wheel sensor or hydraulic unit assembly
is defective. Replace the wheel sensor or hydraulic unit
assembly.
Refer to "FRONT WHEEL" on page 4-19 and "ABS
(ANTI-LOCK BRAKE SYSTEM)" on page 4-60.
8-110
1
2
5 4
3
6
7