ayc problem

i bought evo 6 from 99 thew months ago and it is my first evo, i did not now how the ayc work . the light in the dash never came on, i read in this forum how to check the bulb and surprise the bulb was missing, i supposed removed by the previous owner. i put the bulb and the light stays on
on i start the engine the ayc light comes on the switches off , and after 30-60 seconds as i start moving the car the ayc light is on again,i hear the pump weaning from the moment y start moving the car until the light appears on the dash
i checked the error code and it shows code 82. this code is normally for switch ayc pump or for the faulty pump?