Yamaha YZF-R1, Service Manual

Page: 768 / 808

15_ABS
9-271
Lines short circuit check “B”
3. Defective front wheel sensor or hydraulic unit assembly
• If the above items were performed and no malfunctions were found, the wheel sensor or hydraulic
unit assembly is defective.
• Replace the wheel sensor or hydraulic unit assembly.
Refer to “FRONT WHEEL” on page 4-35 and “ABS (Anti-lock Brake System)” on page 4-74.
ABS ECU coupler
white–any other coupler terminal
black–any other coupler terminal
Is resistance
∞ Ω
?
YES
→
Go to step 3.
NO
→
Replace the wire harness.
R / W
L / W
B
B / W
Gy / B L Y G R / B B L / W
G / O W / L L B W W L / B
R / W
L / W
B
B / W
Gy / B L Y G R / B B L / W
G / O W / L L B W W L / B
B A
1 1