Yamaha Tracer MT09TRAH 2017 Service Manual page 515

Fault code No. 54
Fault code No.
Item
Symptom
Order Item/components and probable cause
1 Defective battery
2 Defective coupler between the battery
and the hydraulic unit assembly
3 Open or short circuit in the wire harness
between the battery and the hydraulic unit
assembly
4 Defective charging system
5 Defective hydraulic unit assembly
Fault code No. 55
Fault code No.
Item
Symptom
Order Item/components and probable cause
1 Defective hydraulic unit assembly
ABS (ANTI-LOCK BRAKE SYSTEM)
54
Hydraulic unit assembly (defective ABS solenoid and ABS motor
power supply circuits)
Abnormality is detected in the solenoid or motor power supply cir-
cuit in the hydraulic unit assembly.
Check or maintenance job
Recharge or replace the battery.
Refer to "CHECKING AND CHARGING THE BATTERY"
on page 8-158.
• 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.
• Replace if there is an open or short circuit.
• Between ABS ECU coupler and starter relay coupler
(ABS motor fuse).
(red/blue–red/blue)
• Between ABS ECU coupler and ABS solenoid fuse.
(red/white–red/white)
Check the charging system.
Refer to "CHARGING SYSTEM" on page 8-13.
If the above items were performed and no malfunctions
were found, replace the hydraulic unit assembly.
Refer to "ABS (ANTI-LOCK BRAKE SYSTEM)" on page
4-60.
55
Hydraulic unit assembly (defective ABS ECU)
Abnormal data is detected in the hydraulic unit assembly.
Check or maintenance job
Replace the hydraulic unit assembly.
Refer to "ABS (ANTI-LOCK BRAKE SYSTEM)" on page
4-60.
8-144