What was found
WHILE ACCOMPLISHING TC 78273000 # 1 ENG. MAINT. FAULT 73-30901 T12 SIGNAL DISAGREE. SHORT TIME FAULT. GROUNDED - YES. ACCOMPLISHED T/S FOR FAULT 73-30901 PER B737-800 FIM 73-26 TASK 805 - INITIAL EVALUATION (EEC TEST) CONFIRMED FAULT AND INPUT MONITORING SHOWED T12 SENSOR CHANNEL B INPUT AS DASHES. ACCOMPLISHED FAULT ISOLATION PROCEDURE FOR DUAL CHANNEL FAULT PER FIM PARAGRAPH G - FOUND CONNECTOR DJ0804J FOR T12 SENSOR CHANNEL B OUTPUT NOT CONNECTED TO BULKHEAD RECEPTACLE. CLEANED AND INSPECTED CONNECTOR - NO DEFECTS NOTED AND THREADS ON CONNECTOR AND RECEPTACLE WERE SERVICEABLE. REINSTALLED AND SECURED T12 CHANNEL B CONNECTOR, CHECKED CHANNEL A CONNECTOR FOR SECURITY, AND PERFORMED EEC TEST PER B737-800 AMM 73-21-00-700-804-F00 - ALL TESTS PASS. INPUT MONITORING SHOWS NORMAL INPUT FROM T12 SENSOR CHANNELS A AND B.