Suzuki 2006 GSF1200AK6 Supplementary Service Manual page 30

Step 4
1) Turn the ignition switch to OFF.
2) Disconnect the ABS control unit coupler. (!Page 26)
3) Turn the ignition switch to ON with the ABS control unit cou-
pler disconnected, measure the voltage between F (O/Y)
and N (B/W) at the coupler.
% Normal value: Battery voltage (12.0 V and more)
" 09900-25008: Multi-circuit tester set
& Tester knob indication: Voltage (')
Is the voltage between F and N normal?
YES Go to step 5.
Inspect the wire harness. (Faulty ignition or
NO
ground wire)
Step 5
1) Turn the ignition switch to ON with the ABS control unit cou-
pler disconnected, measure the voltage between A (Brown)
and N (B/W) at the coupler.
% Normal value: Battery voltage (12.0 V and more)
& Tester knob indication: Voltage (')
Is the voltage between A and N normal?
YES Go to step 6.
Inspect the wire harness. (Faulty indicator light
wire)
NO
Signal fuse or indicator light is blown.
(!Page 75)
Step 6
1) Turn the ignition switch to OFF.
2) Check for continuity between N (B/W) at the coupler and
body ground, also O (B/W) at the coupler and body ground.
( Tester knob indication: Continuity ())
Are there continuity between N (O) and body ground?
YES Replace the ABS control unit/HU.
NO Inspect the wire harness. (Faulty ground wire)
GSF1200AK6/SAK6 ('06-MODEL)
ABS control unit coupler (Harness end)
ABS control unit coupler (Harness end)
ABS control unit coupler (Harness end)
29