Yamaha YZF-R1 Series Service Manual page 719

→ Go to step 3.
3. Wire harness continuity.
• Disconnect the accelerator position sensor coupler "1" and ECU coupler "2".
• Open circuit check
Between accelerator position sensor coupler and
ECU coupler
Is resistance 0 Ω?
YES
→ Go to "Short circuit check".
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
→ 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 accelerator position sensor coupler "1" and
ground
P2122, P2123, P2127, P2128, P2138
1
L/Y B
B/L L/G
W B/Y
9-222
blue/yellow–blue/yellow
white–white
black/blue–black/blue
blue/green–blue/green
black–black
black/yellow–black/yellow
2
L/Y L Y/B
W W L/G B/R
B/G B B/G
B/L B B/Y
blue/yellow–blue/yellow
white–white
blue/green–blue/green
black–black
R/W
W/Y