Yamaha TMAX 2020 Service Manual page 508

[A] Push the ON/start switch,
and check the ABS warning
light.
Comes on
[A-3] The ABS warning light comes
on.
Connect the YDT, and then
execute functional diagnosis.
Can the YDT communicate
with the ABS ECU?
Can communicate
[B-1] Check for ABS DTC in the
screen for the YDT.
Execute diagnosis of
malfunction.
Are DTC displayed on
the screen?
No
[C-1] Perform the final checks.
Were all of the final checks
completed normally?
Yes
(The ABS warning light
goes off when the light is
checked.)
Finished.
Fails to
[A-1] Does only the ABS
come on
warning light fail to
come on?
No
[A-2] Do all indicator lights
fail to come on?
Cannot
communicate
[A-4] Only the ABS ECU
fails to communicate.
No
[A-5] ABS ECU and FI ECU
fail to communicate.
Yes
[B-2] Diagnose by the DTC.
The reaction force generated
during brake line routing
confirmation is incorrect. Refer to
"[C-1] FINAL CHECK".
• The brake hoses and brake
No
pipes are not connected
correctly.
The ABS warning light does
not go off when the light is
checked. Refer to "[C-1]
FINAL CHECK".
• The malfunction is not
corrected.
• There is a break in the wire
harness between the ABS ECU
and the meter assembly.
• The meter assembly is defective.
• The ABS warning light circuit in
the hydraulic unit assembly is
defective.
ABS (Anti-lock Brake System)
• The ABS warning light (LED) is
Yes
defective.
• The wire harness is grounded
between the ABS ECU and the
meter assembly.
• The meter assembly is defective.
• The hydraulic unit assembly is
defective.
• The ON/start switch is defective.
Yes
• The battery voltage is low.
• The main fuse is blown.
• The meter assembly is defective.
• The ABS ECU fuse is blown.
Yes
• The ABS ECU coupler is
disconnected.
• The wire harness is defective.
• The hydraulic unit assembly
is defective.
Yes • The connection with the YDT is
defective.
• The wire harness is defective.
[B-3] Delete the DTC.
9-34
Return to [A].
Return to [A].
Return to [A].
Return to [A].
Return to [A].
Return to [A].