Yamaha MT-09 2021 Service Manual page 667

Ground short circuit check "A"
Between intake air pressure sensor 2 coupler
"1" and ground
Lines short circuit check "B"
ECU coupler "3"
Intake air pressure sensor 2 coupler "1"
Joint coupler "2"
A
1
B P L
3
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
*. MTN890
**. MTN890D
Is resistance ∞ Ω?
YES
→ Go to step 4.
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.
Is it in the "Recovered" condition?
YES
→ Go to step 7, and complete the service.
NO
→ Go to step 4.
4. Installed condition of intake air pressure sensor 2.
• Check for looseness or pinching.
B
L/R L/R L/R L/R
[P1607] blue–ground
[P1606, P1607] pink–ground
[P1607] blue–any other coupler terminal
[P1607] black/blue–any other coupler terminal
[P1606, P1607] pink–any other coupler terminal
[P1607] blue–any other coupler terminal
[P1607] black–any other coupler terminal
[P1606, P1607] pink–any other coupler terminal
[P1607] black/blue–any other coupler terminal
[P1607] black–any other coupler terminal
1
*
2
B P L
L/B
L/W
**
2
L/B
L/W
9-237
P1606, P1607
Y/L P/W P V L L
B/Y 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
Gy
W/Y
Gy
W/Y