Yamaha YZF-R1 Series Service Manual page 587

→ Go to step 4.
TIP
For this check, also set the start/engine stop switch to "ON".
4. Defective O sensor 1.
2
• Replace the O sensor 1.
2
Refer to "ENGINE REMOVAL" on page 5-11.
• 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 6, and complete the service.
NO
→ Start the engine, and then check the condition of the DTC.
Is it in the "Recovered" condition?
YES
→ Go to step 6, and complete the service.
NO
→ Go to step 5.
TIP
For this check, also set the start/engine stop switch to "ON".
5. Malfunction in ECU.
• Replace the ECU, and complete the service.
Refer to "REPLACING THE ECU (Engine Control Unit)" on page 8-41.
6. Delete the DTC and check that the MIL goes off.
• Confirm that the DTC has a condition of "Recovered" using the YDT, and then delete the DTC.
9-90
P0030