What was found
WHILE PERFORMING TC NR 78273000, NR 1 ENGINE HAS LONG TIME FAULT, NR 75-10591 TBV POSITION SIGNAL IS OUT OF RANGE. GROUNDED-YES. CONFIRMED FAULT ACTIVE ON FLIGHT LEGS 2 AND 5. PERFORMED B737-800 FIM 75-21 TASK 802. FOUND PINS C, V, AND (LOWERCASE) Q ON DP0909 INTERMITTENT SHORT TO GROUND (CONNECTOR SHELL). DISCONNECTED DP0903, CONFIRMED FAULT IN HARNESS J9, HPTACC CHECKS GOOD. REMOVED AND REPLACED J9 HARNESS, REF B737-800 AMM 73-21-06. PERFORMED FADEC SYSTEM TEST, REF AMM 73-21-00-700-802-F00. OPERATION CHECKS GOOD. REPAIR CONFIRMATION SUCCESSFUL, REF FIM 75-23 TASK 802. ETOPS GROUND VERIFICATION SUCCESSFUL.