Yamaha Tracer MT09TRAH 2017 Service Manual page 209

• The operation of the hydraulic unit can be con-
firmed using the indicator.
On: The hydraulic unit is operating.
Flashing: The conditions for operating the hy-
draulic unit have not been met.
Off: The brake lever and brake pedal are not
being operated.
1
2
9. Check:
• Hydraulic unit operation
Click "Actuator Check", a single pulse will be
generated in the brake lever "1", brake pedal
"2", and again in the brake lever "1", in this or-
der.
TIP
"ON" and "OFF" on the tool screen indicate
when the brakes are being applied and released
respectively.
ECA17371
NOTICE
• Check that the pulse is felt in the brake le-
ver, brake pedal, and again in the brake le-
ver, in this order.
ABS (ANTI-LOCK BRAKE SYSTEM)
3
4-66
• If the pulse is felt in the brake pedal before
it is felt in the brake lever, check that the
brake hoses and brake pipes are connected
correctly to the hydraulic unit assembly.
• If the pulse is hardly felt in either the brake
lever or brake pedal, check that the brake
hoses and brake pipes are connected cor-
rectly to the hydraulic unit assembly.
10.If the operation of the hydraulic unit is normal,
delete all of the fault codes.
ABS reaction-force confirmation
EWA13120
WARNING
Securely support the vehicle so that there is
no danger of it falling over.
TIP
• For the ABS reaction-force confirmation, use
the diagnosis of function of the Yamaha diag-
nostic tool. For more information, refer to the
operation manual of the Yamaha diagnostic
tool.
• Before performing the ABS reaction-force con-
firmation, make sure that no malfunctions have
been detected in the ABS ECU and that the
wheels are not rotating.
1. Place the vehicle on the centerstand.
2. Turn the main switch to "OFF".
3. Remove:
• Passenger seat/Rider seat
Refer to "GENERAL CHASSIS (1)" on page
4-1.
4. Check:
• Battery voltage
Lower than 12.8 V  Charge or replace the
battery.
Battery voltage
Higher than 12.8 V
TIP
If the battery voltage is lower than 12.8 V, charge
the battery, and then perform ABS reaction-
force confirmation.