Yamaha YZF-R1, Service Manual

Page: 708 / 808

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