As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AMBER TAI INDICATION ON NR 2 ENGINE WITH ENGINES SHUT DOWN AT GATE. ACFT GROUNDED. REMOVED AND REPLACED THE NO. 2 ENGINE COWL TAI VALVE IAW AMM 30-21-11-401-801 & 000-801 & 000-802. NR 2 COWL TAI VALVE OPS CHECKED NORMAL IAW AMM 30-21-11-400-801. NR 2 ENGINE ANTI ICE SWITCH, TAI LIGHT EXTINGUISHED. TAI LIGHT OPS CKS NORMAL.