Suzuki 2006 GSF1200AK6 Supplementary Service Manual page 66

DTC "55" (C1655): ABS control unit malfunction
POSSIBLE CAUSE
Faulty ABS control unit
Step 1
1) Inspect the clearances of the front and rear wheel speed sen-
sor – sensor rotor using the thickness gauge.
% Wheel speed sensor – sensor rotor clearance:
" 09900-20803: Thickness gauge
09900-20806: Thickness gauge
Are the clearances OK?
YES Go to step 2.
NO Adjust the clearance.
Step 2
1) Inspect both of the wheel speed sensor rotors for damage
and check that no foreign objects are caught in the rotor
openings.
Are the rotors OK?
YES Go to step 3.
NO Clean or replace the rotor.
Step 3
1) Check that the front and rear wheel speed sensors are
mounted steadily.
Are the sensors mounted steadily?
YES Go to step 4.
Tighten the mounting bolts or replace the bracket
NO
if necessary.
Step 4
1) Delete DTCs (!Page 34) and repeat the code output pro-
cedure.
If the DTC 55 is output again, the ABS control unit/HU should
be replaced.
0.3 – 1.5 mm (0.012 – 0.059 in)
GSF1200AK6/SAK6 ('06-MODEL) 65