Yamaha MT-09 2021 Service Manual page 610

Is it correct indication?
YES
→ Go to step 21.
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 relay unit coupler "1" and ground
Lines short circuit check "B"
Relay unit coupler "1"
ECU coupler "2"
A
1
W
Br
W L/W R L/B L
*. MTN890
**. MTN890D
Is resistance ∞ Ω?
YES
→ Go to step 11.
NO
a. Replace the wire harness.
b. Execute the diagnostic mode. (Code 21)
When the transmission is in neutral
When the transmission is in gear with the clutch lever released
R L/W R
Sb B Sb/W
black–ground
sky blue–ground
black–any other coupler terminal
sky blue–any other coupler terminal
black/yellow–any other coupler terminal
B
1
Br W
W L/W R L/B L
*
2
L/B Y/L Lg/L
L/W B/Y G/L
L/Y L/W
**
2
L/B Y/L O/W Lg/L
L/W B/Y Br/L G/L
L/Y L/W Lg/B
9-180
P0500, P1500
R L/W R
Sb B Sb/W
P/W P V L L Gy
Gy/G Br/W B/L B/L
G/W G/W W/G W/Y
P/W P V L L Gy
Gy/G Br/W B/L B/L
G/W G/W W/G W/Y
ON
OFF