Yamaha MT-09 2021 Service Manual page 609

When the transmission is in neutral
When the transmission is in gear with the clutch lever released
Is it correct indication?
YES
→ Go to step 21.
NO
→ Go to step 10.
10.Wire harness continuity.
• Disconnect the relay unit coupler "1", ECU coupler "2" and neutral switch coupler "3".
• Remove the joint coupler cap "4".
• Open circuit check
Between relay unit coupler "1" and joint coupler
"4"
Between joint coupler "4" and ECU coupler "2"
Between relay unit coupler "1" and neutral
switch coupler "3"
3
*. MTN890
**. MTN890D
Is resistance 0 Ω?
YES
→ Go to "Short circuit check".
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
1
Br W R L/W R
W L/W R L/B L Sb B Sb/W
4
B/Y B B/Y
black–black/yellow
black/yellow–black/yellow
sky blue–sky blue
*
2
L/B Y/L
L/W B/Y
L/Y L/W
**
2
L/B Y/L
L/W B/Y
L/Y L/W
9-179
P0500, P1500
ON
OFF
Lg/L P/W P V L L Gy
G/L Gy/G Br/W B/L B/L
G/W G/W W/G W/Y
O/W Lg/L P/W P V L L Gy
Br/L G/L Gy/G Br/W B/L B/L
Lg/B G/W G/W W/G W/Y
ON
OFF