Yamaha YZF-R1, Service Manual

Page: 677 / 808

P0500 (FI), P1500
9-180
• 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”
Lines short circuit check “B”
Is resistance 0
Ω
?
YES
→
Go to “Short circuit check”.
NO
a. Replace the wire harness.
b. Execute the diagnostic mode. (Code D21)
When the clutch lever is released with the transmission in gear and when the
sidestand is retracted
OFF
When the clutch lever is squeezed with the transmission in gear and when the
sidestand is retracted
ON
Is it correct indication ?
YES
→
Go to step 21.
NO
→
Go to “Short circuit check”.
Between relay unit coupler “1” and ground
black/yellow–ground
blue/yellow–ground
Relay unit coupler
black/yellow–any other coupler terminal
blue/yellow–any other coupler terminal
ECU coupler “2” black/yellow–any other coupler terminal
Clutch switch coupler “3”
black/yellow–any other coupler terminal
blue/yellow–any other coupler terminal
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 / R L / W R / W L / B L / Y B / Y Sb / W Sb
L / W Br / W L R / L R / W
L / W
B / Y
B / W
L / Y
2
1
3