Yamaha MT-09 2021 - Page 636

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3. Check the electronic throttle valve fuse.
4. Wire harness continuity.
• Disconnect the throttle servo motor coupler “1”, ECU coupler “2” and electronic throttle valve fuse
“3”.
• Open circuit check
• Short circuit check
Is check result OK?
YES
→ Go to step 4.
NO
a. Replace the electronic throttle valve fuse.
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.
Between throttle servo motor coupler “1” and
ECU coupler “2”
yellow/red–yellow/red
light green/red–light green/red
Between ECU coupler “2” and electronic throttle
valve fuse holder “3”
red/blue–red/blue
Is resistance 0 Ω?
YES
→ Go to “Short circuit check”.
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 “Short circuit check”.
O
Gy/RO/GP/BY/R
B R/BG/BL/BLg/R
B
G/YR/L
B/WB/WR/LL/WY/BY/RR/G
Y/R
Lg/R
1
2
3