Yamaha YZF-R1 2020 Service Manual page 594

Is it in the "Recovered" condition?
YES
→ Go to step 6, and complete the service.
NO
→ Go to "Short circuit check".
TIP
For this check, also set the start/engine stop switch to "ON".
• Short circuit check
TIP
Disconnect the ECU related connectors before checking.
Refer to "PARTS CONNECTED TO THE ECU" on page 9-3.
Ground short circuit check "A"
Between O sensor 1 coupler "1" and ground
2
Between main switch coupler "4" and ground
Lines short circuit check "B"
O sensor 1 coupler
2
ECU coupler "2"
Main switch coupler
A
1
Is resistance ∞ Ω?
YES
→ Go to step 4.
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 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
4
red/white–ground
pink/black–ground
brown/blue–ground
red/white–any other coupler terminal
pink/black–any other coupler terminal
pink/black–any other coupler terminal
brown/blue–any other coupler terminal
B
1
4
9-99
P0030
2
Y / R P / W P / B Gy / G O / G Gy / R O
Lg / R L / R O / B L / B G / B R / B B
R / L G / Y Br / R Br / B Br / Y Sb / W W / L B
R / G Y / B L / W Y / L Sb R / L B / W B / W