Yamaha MT-09 2021 Service Manual page 608

Is that value increased?
YES
→ Go to step 21.
NO
→ Go to step 6.
6. Malfunction in ECU.
• Replace the ECU.
Refer to "REPLACING THE ECU (Engine Control Unit)" on page 8-56.
• Execute the diagnostic mode. (Code 07)
• Rotate the rear wheel by hand and check that the indicated value increases.
Is that value increased?
YES
→ Go to step 21.
NO
→ Go to step 7.
7. Malfunction in ABS ECU.
• Replace the ABS ECU and go to step 21.
8. Connection of neutral switch coupler.
• Check the locking condition of the coupler.
• Disconnect the coupler and check the pins (bent or broken terminals and locking condition of the
pins).
Is the coupler condition normal?
YES
→ Go to step 9.
NO
a. Connect the coupler securely or 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
Is it correct indication?
YES
→ Go to step 21.
NO
→ Go to step 9.
9. Connection of ECU coupler.
• Check the locking condition of the coupler.
• Disconnect the coupler and check the pins (bent or broken terminals and locking condition of the
pins).
Is the coupler condition normal?
YES
→ Go to step 10.
NO
a. Connect the coupler securely or replace the wire harness.
b. Execute the diagnostic mode. (Code 21)
9-178
P0500, P1500
ON
OFF