Sounds like a loose wheel sensor wire. There's a reset procedure, you might want to find the code before you try it though. Are you positive you shorted the correct connector? That's strange, it should flash.

Short the service check connector (under the glovebox, same one shorted to check engine codes).
Depress the brake pedal.
Turn the ignition switch ON (II) while keeping the brake pedal depressed.
After the ABS light goes OFF, release the brake pedal.
After the ABS light comes ON, depress the brake pedal.
After the ABS light goes OFF, release the brake pedal.

After a few seconds, the ABS light blinks twice and the DTC(s) are erased. If the light does not blink twice repeat steps 1-6. If the light stays ON after the light blinks twice, check the DTC because a problem was detected during initial diagnosis before shifting to DTC erase mode.