Yamaha YZF-R1 2020 Service Manual page 628

ECU coupler "2"
A
1
Is resistance ∞ Ω?
YES
→ Go to step 5.
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 step 5.
5. Defective O sensor 1.
2
• Check the O sensor 1.
2
Refer to "ENGINE REMOVAL" on page 5-11.
Is check result OK?
YES
→ Go to step 6.
NO
a. Replace the O
Refer to "ENGINE REMOVAL" on page 5-11.
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 6.
6. Malfunction in ECU.
• Replace the ECU, and complete the service.
Refer to "REPLACING THE ECU (Engine Control Unit)" on page 8-41.
7. 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 1.
2
black/blue–any other coupler terminal
gray/green–any other coupler terminal
B
1
2
9-133
L/B P/W P V L/R
Y/L L
L/W B/Y Gy/G Br/W B/L W
L/Y L/W Gy/Y G/W G
P0132
Gy
W/B
Gy/B W/L