Yamaha TMAX 2020 Service Manual page 200

2
G088910
9. Check:
• Hydraulic unit operation
Click "Actuator Check", a single pulse will be
generated in the front brake lever "1", rear
brake lever "2", and again in the front brake
lever "1", in this order.
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TIP
"ON" and "OFF" on the tool screen indicate
when the brakes are being applied and released
respectively.
ECA22080
NOTICE
• Check that the pulse is felt in the front
brake lever, rear brake lever, and again in
the front brake lever, in this order.
• If the pulse is felt in the rear brake lever be-
fore it is felt in the front 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 front
brake lever or rear brake lever, check that
the brake hoses and brake pipes are con-
nected correctly to the hydraulic unit as-
sembly.
10.If the operation of the hydraulic unit is normal,
delete all of the DTC.
ABS (Anti-lock Brake System)
ABS reaction-force confirmation
EWA13120
1
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 YDT. For more
information, refer to the operation manual of
the YDT.
• 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 a centerstand.
2. Push the OFF/LOCK switch.
3. Remove:
1
• Battery cover
Refer to "GENERAL CHASSIS (1)" on
page 4-1.
4. Check:
• Battery voltage
Lower than 12.8 V  Charge or replace the
battery.
TIP
If the battery voltage is lower than 12.8 V, charge
the battery, and then perform ABS reaction-
force confirmation.
5. Removing the protective cap, and then con-
nect the YDT to the YDT coupler.
Refer to "YDT" on page 9-3.
TIP
• Yamaha diagnostic tool (A/I) (90890-03264) in-
cludes YDT sub harness (6P) (90890-03266).
• If you already have Yamaha diagnostic tool (A/
I) (90890-03262), YDT sub harness (6P)
(90890-03266) is separately required.
6. Start the YDT and display the diagnosis of
function screen.
7. Select code No. 1, "ABS reaction-force con-
firmation".
4-71
Battery voltage
Higher than 12.8 V
Yamaha diagnostic tool USB
90890-03267
Yamaha diagnostic tool (A/I)
90890-03264