Yamaha MT-09 2021 Service Manual page 562

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 O sensor coupler "1" and ground
2
Lines short circuit check "B"
O sensor coupler "1"
2
Joint coupler "2"
ECU coupler "3"
A
1
R P/B
Gy/G B/L
*. MTN890
**. MTN890D
Is resistance ∞ Ω?
YES
→ Go to step 5.
NO
a. Replace the wire harness.
b. Turn the main switch to "ON", and then check the condition of the DTC using the malfunction
mode of the YDT.
B
1
R P/B
Gy/G B/L
2
L/W W L/W W B B L/B L/B Y/B Y/B
B B/L B B B B B B/L L/R L/R L/R L/R
gray/green–ground
gray/green–any other coupler terminal
black/blue–any other coupler terminal
black/blue–any other coupler terminal
gray/green–any other coupler terminal
black/blue–any other coupler terminal
*
3
L/B
L/W
**
3
L/B
L/W
9-132
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
P0132
Gy
W/Y
Gy
W/Y