Yamaha XSR 900 2022 Service Manual page 545

Is it in the "Recovered" condition?
YES
→ Go to step 6, and complete the service.
NO
→ Go to step 3.
3. Check fuel pressure.
• Check the fuel pressure.
Refer to "CHECKING THE FUEL PRESSURE" on page 7-11.
Is check result OK?
YES
→ Go to step 4.
NO
a. Replace the fuel pump.
Refer to "REMOVING THE FUEL PUMP" on page 7-4.
b. Test ride the vehicle according to the test-ride conditions for the O
Refer to step 2 in "TROUBLESHOOTING" on page 9-137.
At this time, do not check the malfunction diagnosis status (readiness).
c. Check 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
→ Go to step 4.
4. Defective O sensor.
2
a. Replace the O
2
Refer to "ENGINE REMOVAL" on page 5-9.
b. Test ride the vehicle according to the test-ride conditions for the O
Refer to step 2 in "TROUBLESHOOTING" on page 9-137.
At this time, do not check the malfunction diagnosis status (readiness).
c. Check 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
→ Go to step 5.
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.
sensor.
9-139
P0134
deterioration diagnosis.
2
deterioration diagnosis.
2