Suzuki 2006 GSF1200AK6 Supplementary Service Manual page 51

50 GSF1200AK6/SAK6 ('06-MODEL)
DTC "23" (C1623): ABS actuator circuit malfunction (R)
POSSIBLE CAUSE
• Wire harness discontinuity
• Rear wheel locking, etc.
Step 1
1) Support the motorcycle with its center stand.
2) Inspect the dragging of the rear brake.
Is there any dragging in the rear brake?
Inspect the rear brake master cylinder and the
YES
caliper.
NO Go to step 2.
Step 2
1) Inspect the clearance between the rear wheel speed sensor
and sensor rotor using the thickness gauge.
% Wheel speed sensor – sensor rotor clearance:
" 09900-20803: Thickness gauge
09900-20806: Thickness gauge
Is the clearance OK?
YES Go to step 3.
NO Adjust the clearance.
Step 3
1) Check that the rear wheel speed sensor is mounted steadily.
Is the sensor mounted steadily?
YES Replace the ABS control unit/HU.
Tighten the mounting bolts or replace the bracket
NO
if necessary.
0.3 – 1.5 mm (0.012 – 0.059 in)