Suzuki GSF1250 Service Manual page 545

Step
6 1) Check for continuity between "3" (W/R) on the ABS
control unit coupler and "D" (W/R) on the front wheel
speed sensor coupler.
Special tool
(A): 09900–25008 (Multi-circuit tester set)
(B): 09900–25009 (Needle pointed probe set)
Tester knob indication
Continuity test (
Normal value ("3" – "D")
Continuity (
Harness side
"D"
(B)
18
10
2
ABS control unit coupler (Harness end)
Is there continuity between "3" and "D"?
7 1) Connect the front wheel speed sensor coupler.
2) Connect three 1.5 V dry cells "a" in series as shown and
make sure that their total voltage is more than 4.5 V.
Measure the current between (+) dry cell terminal and
"12" (B/R) on the ABS control unit coupler.
Special tool
(A): 09900–25008 (Multi-circuit tester set)
(B): 09900–25009 (Needle pointed probe set)
Tester knob indication
Current ( , 20 mA)
Normal value
3 – 14 mA
ABS control unit coupler (Harness end)
(B)
(A)
Is the current OK?
Action
)
)
21
25
24
12 13 16
8 9
3 4
18 21
24 25
10 12 13 16
8 9
2 3 4
"a"
DCmA
Yes
Go to Step 7.
(A)
I718H1450083-04
Replace the ABS
control unit/HU.
I718H1450084-03
ABS: 4E-52
No
Inspect the wire
harness. (Faulty W/R
wire)
Faulty front wheel
speed sensor.