What was found
ENG EEC C1 RT ENGINE CONTROL IS IN A TIME LIMITED DISPATCH CONDITION. ENGINE CONTROL SYSTEM OPERATING WITH REDUCED REDUNDANCY. DB ELECTRONIC ENGINE CONTROL CHANNEL-A (RIGHT ENG) UPON ARRIVAL FOUND MAINT MESSAGE 73-31212. STATUS MESSAGE ACTIVE BUT CORRELATED MESSAGE SHOWS NOT ACTIVE AT THIS TIME. IAW FIM DMC-B787-A-G73-10-F1-60A-421A-A FOR FURTHER TS. DURING INITIAL TROUBLESHOOTING, EEC MAINT SWITCH WAS ENABLED AND MX. 73-31212 MESSAGE 73-11232 SHOWED NO EXISTING FAULTS FOUND, CHECKED INBOUND FLIGHT DECK EFFECTS & FOUND FAULTS 73-11232 AND 73-31212 IAW FIM DMC-B787-A-G73-10-F1-12A-421A-A, SET RT EEC TO TEST MODE, FAULT 73-11232 SHOWS ACTIVE, NEXT TASK IS TO ACCOMPLISH STEP B. FAULT ISOLATION PROCEDURE. IAW FIM B787-A-G73-10-F1-12A-421A-A, CHECKED CONNECTOR DM7321025P134. FOUND IN GOOD CONDITION, CHECKED RESISTANCES OF FUEL SPLIT VALVE, ALL WITHIN RANGE. CHECKED CONNECTOR DM7321003P7, NO FAULTS NOTED. CHECKED CONTINUITY BETWEEN CONNECTOR DM7321025P134 AND DM7321003P7 ALL WIRE CHECKS GOOD. ACCOMPLISHED GVI OF HARNESS WITH NO ANOMOLIES NOTED. WITH EEC TEST ENGINE FAULT RETURNS. NEXT STEP IN FIM IS TO ACCOMPLISH ENGINE TEST 13. RAN TEST 13 ON RIGHT ENGINE, TEST PASSED AND MSG CLEARED. REF AMM DMC-B787-A-G71-00-00-42B-320A-A.