Yamaha YZF-R1 Series Service Manual page 768

Lines short circuit check "B"
ABS ECU coupler
A
1
Gy/B L Y G R/B B L/W
L/W
R/W
G/O W/L L B W W L/B
Is resistance ∞ Ω?
YES
→ Go to step 3.
NO
→ Replace the wire harness.
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.
white–any other coupler terminal
black–any other coupler terminal
B
B/W
B
9-271
1
Gy/B L Y G R/B B L/W
L/W B/W
R/W B
G/O W/L L B W W L/B
15_ABS