What was found
PDX FLIGHT NR 2435 - UPON EXITING RUNWAY, TILLER WAS TURNED TO THE RIGHT, 'NOSE STEERING' CAUTION LIGHT ILLUMINATED. CYCLED SWITCH PER E/A CHECKLIST. NOSE STEERING CAUTION EXTINGUISHED AND NOSE STEERING RETURNED THEN TURING TILLER LEFT INTO PARKING ' NOSE STEERING' CAUTION ILLUMINATED AGAIN AND STEERING KICKED OFF. MAINTENANCE REMOVED AND REPLACED THE NWS STEERING ELECTRICAL HARNESS IAW Q400 AMM TR 32-178, TASK 32-21-11-400-801. FUNCTION TEST OF NWS IAW TASK 32-51-00-720-801 GOOD. OPS TEST OF LANDING GEAR EXT AND RETRACTION GOOD IAW TASK 32-31-00-710-801. AIRCRAFT RETURNED TO SERVICE.