Suzuki GSF1250 Service Manual page 543

Step
2 1) Disconnect the front wheel speed sensor coupler.
2) Measure the resistance between "A" (Black) and ground
at the front wheel speed sensor coupler.
Special tool
(A): 09900–25008 (Multi-circuit tester set)
Tester knob indication
Resistance (Ω)
Normal value ("A" – Ground)
∞ Ω (Infinity)
(A)
Is the resistance between "A" and ground OK?
3 1) Measure the resistance between "3" (W/R) and ground
at the ABS control unit coupler.
Special tool
(A): 09900–25008 (Multi-circuit tester set)
(B): 09900–25009 (Needle pointed probe set)
Tester knob indication
Resistance (Ω)
Normal value ("3" – Ground)
∞ Ω (Infinity)
(A)
Is the resistance between "3" and ground OK?
Action
Sensor side
"A"
I718H1450079-03
18 21
25
24
10 12 13 16
8 9
2 3 4
ABS control unit coupler
(Harness end)
(B)
I718H1450080-04
Yes
Inspect the wire
harness. (Faulty B/R
wire)
Go to Step 5.
ABS: 4E-50
No
Faulty front wheel
speed sensor
Go to Step 4.