What was found
STAB OUT OF TRIM LIGHT ON CLIMBOUT. MAIN ELECTRIC TRIM WORKS FINE. AUTOPILOT TRIM DOES NOT WORK. GROUNDED - YES. REF MAINT MSG 22-11167, PERFORMED B737-800 FIM TASK 22-14 TASK 818 STAB TRIM CLUTCH WRAP PROBLEM, PERFORMED WIRING CHECK ON COLUM SWITCHING MODULE REF B737-800 WDM 22-13-11, FOUND NO CONTINUITY BTW CONNECTOR D10135C PIN K3 AND SERVO MOTOR D381 PIN 6, REMOVED AND REPLACED COLUM CUTOUT SWITCH, REF MM 27-41-51, COLUM CUTOUT SWITCH TEST SUCCESSFUL REF B737-800 AMM 27-41-00, PERFORMED BITE LIBRARY TEST GROUP NO, 60.32, SPEED/STAB TRIM, NO FAULT FOUND, REF AMM 22-11-00. PERFORMED FCC A AND B LRU REPLACEMENT TEST, ALL TEST PASS, PERFORMED DFCS LAND VERIFY TEST, ALL TEST PASS, REF AMM TASK 22-11-00-700-801. A/C CAT3 AUTOLAND OK.