What was found
NR 2 ENGINE IGNITION SYS, R, SIDE FAILED TO START ENGINE LT IGNITION START ATTEMPT GOOD. ACFT GROUNDED. PERFORMED NR 2 ENGINE IGNITION SYS AUDIBLE TEST, REF AMM 74-00-00. NR 2 ENGINE RT IGNITION SYS CHANNEL B AUDIBLE TEST FAILED. PERFORMED FIM TASK 74-21, TASK 807. R & R NR 2 ENGINE RT IGNITION EXCITER, REF AMM 74-11-01. R &R NR 2 ENGINE RT IGNITER PLUG, REF AMM 74-21-02. PERFORMED IGNITION SYS AUDIBLE TEST FOR NR 2 ENGINE, NO HELP, SAME FAULT OCCURS. REPLACED NR 2 ENGINE ELECTRONIC ENGINE CONTROL WITH SERVICEABLE ONE. VERIFIED SOFTWARE COMPATIBILITY. ACCOMPLISHED FADEC SYSTEM TEST, ALL TESTS PASS, REF AMM F73-21-00-700-802 & 73-21-60-400-801. PERFORMED NR 2 ENGINE LT AND RT IGNITION SYS AUDIBLE TEST, OPS CHECK GOOD.