57_Abs; Troubleshooting - Yamaha MT-09 2021 Service Manual

EAS20666

57_ABS

EAS33292

TROUBLESHOOTING

Item
Vehicle CAN communication line or power source of vehicle system
Procedure
1. Wire harness continuity.
• Disconnect the ECU coupler "1" and ABS ECU coupler "5".
• Remove the joint coupler cap "2", joint coupler cap "3" and joint coupler cap "4".
• Open circuit check
Between ECM coupler "1" and joint coupler "3"
Between ECM coupler "1" and joint coupler "4"
Between joint coupler "2" and joint coupler "3"
Between joint coupler "2" and joint coupler "4"
Between joint coupler "2" and ABS ECU coupler
"5"
2
L/W W L/W W
B B/L B B B B B
4
*. MTN890
**. MTN890D
Is resistance 0 Ω?
YES
→ Go to "Short circuit check"
NO
→ Replace the wire harness.
• Short circuit check
TIP
Disconnect the ECU and ABS ECU related connectors before checking.
Refer to "PARTS CONNECTED TO THE ECU" on page 9-4 and "PARTS CONNECTED TO THE ABS
ECU" on page 9-4.
B B L/B L/B Y/B Y/B
B/L L/R L/R L/R L/R
3
Y/B L/B L/B
W L/W L/W
blue/black–blue/black
blue/white–blue/white
yellow/black–yellow/black
white–white
blue/black–blue/black
blue/white–blue/white
5
*
1
L/B
L/W
**
1
L/B
L/W
9-298
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
Y/L Lg/L P/W P V L L
B/Y G/L Gy/G Br/W B/L B/L
L/Y L/W G/W G/W W/G
Y/L O/W Lg/L P/W P V L L
B/Y Br/L G/L Gy/G Br/W B/L B/L
L/Y L/W Lg/B G/W G/W W/G
57_ABS
Gy
W/Y
Gy
W/Y