Yamaha MT-09 2021 Service Manual page 586

Is resistance 0 Ω?
YES
→ Go to "Short circuit check".
NO
a. Replace the wire harness.
b. Start the engine and let it idle for approximately 5 seconds.
c. Check the condition of the DTC using the malfunction mode of the YDT.
Is it in the "Recovered" condition?
YES
→ Go to step 7, and complete the service.
NO
→ Go to "Short circuit check".
• Short circuit check
TIP
Disconnect the ECU related connectors before checking.
Refer to "PARTS CONNECTED TO THE ECU" on page 9-4.
Ground short circuit check "A"
Between cylinder-#1 ignition coil coupler "1" and
ground
Lines short circuit check "B"
Cylinder-#1 ignition coil coupler "1"
ECU coupler "2"
A
1
O R/W
2
Y/R P/B O/G Gy/R O
Lg/R L/B G/B R/B B
R/L G/Y B
R/G Y/R Y/B L/W R/L B/W B/W
B
1
O R/W
9-156
1
O R/W
orange–ground
orange–any other coupler terminal
orange–any other coupler terminal
2
Y/R P/B
Lg/R L/B
R/L G/Y
R/G Y/R Y/B L/W
P0351
O/G Gy/R O
G/B R/B B
B
R/L B/W B/W