What was found
(CAN) UPON TAXI THE FLIGHT CREW NOTED THAT THE NOSE WHEEL STEERING WAS UNRESPONSIVE. THE TEST FUNCTION WORKED FINE. THE AIRCRAFT RETURNED TO THE GATE WHERE MAINTENANCE REPLACED THE FAILED POWER LEVER NOSE STEERING MICROSWITCH. NO WARNING INDICATIONS WERE GIVEN AND NONE WOULD BE EXPECTED AS FAILURE OF THIS COMPONENT WOULD NOT PROVIDE A WARNING NOTIFICATION TO THE FLIGHT CREW. MAINTENANCE REPLACED THE SWITCH AND RELEASED THE AIRCRAFT. LOCATION OF POWER LEVER SWITCH IS ITEM #3 IN THE ATTACHED IPC DRAWING. (TC# 20090918011)