As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE ACCOMP T/C# N8472002 EEC TEST FOUND ENG #2 "MSG #73-10242 INTERNAL EEC FAULT. THE ALTN MODE LIGHT IS ALWAYS OFF" & MSG #71-11002 THE APL INPUT VOLTAGE FOR R EXCITER (IGN R) IS ALWAYS ON". GROUNDED - YES. REMOVED AND REPLACED #2 ENGINE EEC, PERFORMED EEC INSTALLATION TEST REF B737-800 AMM 73-21-60-000-801-F00 AND AMM 73-21-60-400-801-F00. TEST PASSED, NO FAULT NOTED.