Yamaha YZF-R1 Series Service Manual page 708

Ground short circuit check "A"
Between main switch coupler "1" and ground
Between relay unit coupler "3" and ground
Lines short circuit check "B"
Main switch coupler "1"
ECU coupler "2"
Relay unit coupler "3"
Sidestand switch coupler "4"
A
1
L/Y L/B
3
Br/W L/W R/W L R/L
L/R L/W R/W L/B L/Y Sb B/Y Sb/W
Is resistance ∞ Ω?
YES
→ Go to step 5.
NO
a. Replace the wire harness.
b. Turn the main switch to "ON", and then extend and retract the sidestand.
c. 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 sidestand switch.
• Execute the diagnostic mode. (Code D20)
• Shift the transmission into gear.
Sidestand retracted
Sidestand extended
Is check result OK?
YES
→ Go to step 6.
NO
blue/yellow–ground
blue/black–ground
blue/yellow–ground
blue/black–ground
blue/yellow–any other coupler terminal
blue/black–any other coupler terminal
blue/yellow–any other coupler terminal
blue/yellow–any other coupler terminal
blue/black–any other coupler terminal
blue/black–any other coupler terminal
B
1
L/Y L/B
2
L/B P/W P
L/W B/Y Gy/G
L/Y L/W Gy/Y
9-211
3
Br/W L/W
4
L/B B
V L L/R Gy
Br/W B/L W W/B
G/W G Gy/B W/L
ON
OFF
P1601
R/W L R/L
L/R L/W R/W L/B L/Y Sb B/Y Sb/W