Yamaha MT-09 2021 Service Manual page 730

TIP
Turn the main switch to "OFF" before disconnecting or connecting a coupler.
Is check result OK?
YES
→ Go to step 4.
NO
→ If there is a malfunction, repair it and connect the coupler securely.
4. Wire harness continuity
• Disconnect the ABS ECU fuse "1", ABS solenoid fuse "2" and ABS ECU coupler "3".
• Open circuit check
Between ABS ECU fuse holder "1" and ABS
ECU coupler "3"
Between ABS solenoid fuse holder "2" and ABS
ECU coupler "3"
Is resistance 0 Ω?
YES
→ Go to "Short circuit check"
NO
→ Replace the wire harness.
• Short circuit check
TIP
Disconnect the ABS ECU related connectors before checking.
Refer to "PARTS CONNECTED TO THE ABS ECU" on page 9-4.
Ground short circuit check "A"
Between ABS ECU coupler "3" and ground
Lines short circuit check "B"
ABS ECU coupler "3"
1
2
9-300
red/black–red/black
blue/white–blue/white
3
W/G G Y L R/B Br L/W
L/W
R
G/O W/Y L B W Y L/B
red/black–ground
blue/white–ground
red/black–any other coupler terminal
blue/white–any other coupler terminal
57_ABS
B/W
B