Yamaha YZF-R1 Series Service Manual page 600

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 2 coupler "1" and ground
2
Lines short circuit check "B"
O sensor 2 coupler
2
ECU coupler "2"
A
1
R/W P/W
Gy/Y B/L
Is resistance ∞ Ω?
YES
→ Go to step 5.
NO
a. Replace the wire harness.
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 5.
5. Check fuel pressure.
• Check the fuel pressure.
Refer to "CHECKING THE FUEL PRESSURE" on page 7-18.
Is check result OK?
YES
→ Go to step 6.
gray/yellow–ground
pink/white–ground
black/blue–ground
red/white–ground
gray/yellow–any other coupler terminal
pink/white–any other coupler terminal
black/blue–any other coupler terminal
red/white–any other coupler terminal
gray/yellow–any other coupler terminal
pink/white–any other coupler terminal
black/blue–any other coupler terminal
B
1
R/W P/W
Gy/Y B/L
2
L/B P/W P
L/W Gy/G
B/Y
L/Y L/W Gy/Y
9-103
P00D3, P2197
2
Y/R P/W
Lg/R L/R
R/L G/Y Br/R Br/Y
R/G Y/B L/W
V L L/R Gy
Br/W W W/B
B/L
G/W G Gy/B W/L
P/B O/G Gy/G O Gy/R
L/B O/B R/B G/B B
Br/B W/L Sb/W B
Y/L Sb R/L B/W B/W