33_Abs; Troubleshooting - Yamaha MT-09 2021 Service Manual

EAS20692

33_ABS

EAS33322

TROUBLESHOOTING

Item
Hydraulic unit assembly (abnormal ABS motor power supply)
Procedure
1. Blown ABS motor fuse
• Check the ABS motor fuse.
Refer to "CHECKING THE FUSES" on page 8-55.
Is check result OK?
YES
→ Go to step 2.
NO
→ Replace the fuse and check the wire harness.
2. Defective coupler between the battery and the hydraulic unit assembly
• Check the coupler for any pins that may be pulled out.
• Check the locking condition of the coupler.
TIP
Turn the main switch to "OFF" before disconnecting or connecting a coupler.
Is check result OK?
YES
→ Go to step 3.
NO
→ If there is a malfunction, repair it and connect the coupler securely.
3. Wire harness continuity
• Disconnect the ABS motor fuse "1" and ABS ECU coupler "2".
• Open circuit check
Between ABS motor fuse "1" and ABS ECU
coupler "2"
Is resistance 0 Ω?
YES
→ Go to "Short circuit check".
NO
→ Replace the wire harness.
red–red/white
2
1
9-286
W/G G Y L R/B Br L/W
L/W B/W
R B
G/O W/Y L B W Y L/B
33_ABS