Yamaha YZF-R1 Series Service Manual page 637

Is resistance 0 Ω?
YES
→ Go to "Short circuit check".
NO
a. Replace the wire harness.
b. Crank the engine, 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 "Short circuit check".
• 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 crankshaft position sensor coupler "1" and
ground
Lines short circuit check "B"
Crankshaft position sensor coupler
ECU coupler "2"
A
1
B/L Gy
Is resistance ∞ Ω?
YES
→ Go to step 4.
NO
2
1
L/B
B/L Gy
L/W B/Y
L/Y L/W
gray–ground
black/blue–any other coupler terminal
gray–any other coupler terminal
black/blue–any other coupler terminal
gray–any other coupler terminal
B
9-140
P/W P V L/R Gy
L
Gy/G Br/W B/L W W/B
Gy/Y G/W G Gy/B W/L
1 2
B/L Gy
L/B
L/W
B/Y
L/Y L/W
P0335
P/W P V L L/R Gy
Gy/G Br/W W W/B
B/L
Gy/Y G/W G Gy/B W/L