Table of Contents
2. ABS control unit fuse
• Check the ABS control unit fuse for continuity.
Refer to "CHECKING THE FUSES" on page 8-128.
• If the ABS control unit fuse is blown, replace the fuse.
3. ABS ECU coupler
• Check that the ABS ECU coupler is connected properly.
For information about connecting the ABS ECU coupler properly, refer to "INSTALLING THE HY-
DRAULIC UNIT ASSEMBLY" on page 4-65.
4. Wire harness
• Open circuit between the main switch and the ABS ECU, or between the ABS ECU and the ground.
Check for continuity between brown/red terminal of the main switch coupler and brown/white termi-
nal of the ABS ECU coupler.
Check for continuity between black/white terminal of the ABS ECU coupler and the ground, and be-
tween the black terminal of the ABS ECU coupler and ground.
If there is no continuity, the wire harness is defective. Replace the wire harness.
• Open circuit in the wire harness between the ABS ECU coupler and the ABS test coupler.
Check for continuity between blue/red terminal of the ABS ECU coupler and blue/red terminal of the
ABS test coupler. (CANH)
Check for continuity between blue/black terminal of the ABS ECU coupler and blue/black terminal
of the ABS test coupler. (CANL)
5. ABS ECU malfunction
Replace the hydraulic unit assembly.
EAS31165
[B-1] MALFUNCTION ARE CURRENTLY DETECTED
When the Yamaha diagnostic tool is connected to the ABS test coupler, the fault codes will be displayed
on the computer screen.
• A fault code is displayed. [B-2]
• A fault code is not displayed. [C-1]
EAS31166
[B-2] DIAGNOSIS USING THE FAULT CODES
This model uses the Yamaha diagnostic tool to identify malfunctions.
For information about using the Yamaha diagnostic tool, refer to the operation manual that is included
with the tool.
Yamaha diagnostic tool USB
90890-03256
Yamaha diagnostic tool (A/I)
90890-03254
Connecting the Yamaha diagnostic tool
Remove the battery cover assembly. Refer to "GENERAL CHASSIS (1)" on page 4-1.
Remove the protective cap "1", and then connect the Yamaha diagnostic tool to the coupler.
ABS (ANTI-LOCK BRAKE SYSTEM)
1
8-88
Chapters
Table of Contents
Troubleshooting
