What was found
ETOPS SIGNIFICANT SYSTEM - LEFT ENGINE EEC C1 STATUS MESSAGE DISPLAYED. BITE CHECKED PIMU & FOUND EEC CHANNELS A & B FMU CR- CHECK FAILED. TROUBLESHOT PER FIM. PIMU MESSAGE INDEX FOUND RESISTANCES WITHIN LIMITS OF FIM & PINS B,A,E,C,D DO NOT GO TO GROUND. INSPECTED WIRING, CHECKED OK. RAN ENGINE AT IDLE, MESSAGE DID NOT RETURN. ACFT OK FOR SERVICE.