Troubleshooting Details - Yamaha Tracer MT09TRAH 2017 Service Manual

Fault code
No.
55 Hydraulic unit assembly
(defective ABS ECU)
56 Hydraulic unit assembly
(abnormal internal power
supply)
63 Front wheel sensor power
supply (voltage of power
supply is low)
64 Rear wheel sensor power
supply (voltage of power
supply is low)
* The fault code number varies according to the vehicle conditions. For details, refer to the "Trouble-
shooting details".

Troubleshooting details

Fault code No. 11, 25
Fault code No.
Item
Symptom
Order Item/components and probable cause
1 Foreign material adhered around the front
wheel sensor
2 Incorrect installation of the front wheel
3 Defective sensor rotor or incorrect instal-
lation of the rotor
4 Defective front wheel sensor or incorrect
installation of the sensor
ABS (ANTI-LOCK BRAKE SYSTEM)
Item
Abnormal data is detected in
the hydraulic unit assembly.
Abnormality is detected in
the power supply circuit in
the hydraulic unit assembly.
Power voltage supplied from
the ABS ECU to the front
wheel sensor is too low.
Power voltage supplied from
the ABS ECU to the rear
wheel sensor is too low.
11
25
Front wheel sensor (intermittent pulses or no pulses)
Front wheel sensor signal is not received properly. (Pulses are not
received or are received intermittently while the vehicle is travel-
ing.)
8-132
Symptom
Check or maintenance job
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.
Check the components for looseness, distortion, and
bends.
Refer to "CHECKING THE FRONT WHEEL" on page
4-21.
Check the surface of the sensor rotor for damage.
Replace the sensor rotor if there is visible damage.
Refer to "MAINTENANCE OF THE FRONT WHEEL
SENSOR AND SENSOR ROTOR" on page 4-23.
Check the wheel sensor for damage and the installed
condition of the sensor. Repair or replace the wheel
sensor if necessary.
Refer to "MAINTENANCE OF THE FRONT WHEEL
SENSOR AND SENSOR ROTOR" on page 4-23.
Check point
• Defective hydraulic unit
assembly
• Defective hydraulic unit
assembly
• Short circuit in the wire har-
ness between the front
wheel sensor and the
hydraulic unit assembly
• Defective front wheel sen-
sor
• Defective hydraulic unit
assembly
• Short circuit in the wire har-
ness between the rear
wheel sensor and the
hydraulic unit assembly
• Defective rear wheel sen-
sor
• Defective hydraulic unit
assembly