Honda 2003 ST1300lA Owner's Manual page 64

Braking
If the ABS indicator light blinks while riding, stop the motorcycle in a safe
place and turn off the engine. Turn the ignition ON again. The light should
come on, and then go off after you ride the motorcycle at speeds above 6 mph
(10 k m / h ) If it does not go off or if it blinks again, ABS is not functioning.
However, the Linked Braking System will still provide normal stopping ability.
However, you should have the system checked by your Honda dealer as soon as
possible.
The ABS indicator may blink if you place the motorcycle on its center stand and
turn the rear wheel. This is normal. Turn the ignition OFF to stop the blinking.
A red bulb is used for the ABS indicator light. Be sure that the bulb lights when
the ignition is ON. If the bulb fails to light, see your Honda dealer.
62
Basic Operation & Riding