Yamaha YZF-R1 Series Service Manual page 601

NO
a. Replace the fuel pump.
Refer to "REMOVING THE FUEL PUMP" on page 7-3.
b. Start the engine and let it idle for approximately 1 minute.
c. Check the condition of the DTC using the malfunction mode of the YDT.
Is it in the "Recovered" condition?
YES
→ Go to step 8, and complete the service.
NO
→ Go to step 6.
6. Defective O sensor 2.
2
• Check the O sensor 2.
2
Refer to "ENGINE REMOVAL" on page 5-11.
Is check result OK?
YES
→ Go to step 7.
NO
a. Replace the O
Refer to "ENGINE REMOVAL" on page 5-11.
b. Start the engine and let it idle for approximately 1 minute.
c. Check the condition of the DTC using the malfunction mode of the YDT.
Is it in the "Recovered" condition?
YES
→ Go to step 8, and complete the service.
NO
→ Go to step 7.
7. Malfunction in ECU.
• Replace the ECU, and complete the service.
Refer to "REPLACING THE ECU (Engine Control Unit)" on page 8-41.
8. 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.
sensor 2.
2
9-104
P00D3, P2197