What was found
AFTER NORMAL ENGINE START USING THE APU. APU WAS SHUTDOWN, OPS NORMAL. DURING TAXI OUT FAULT LIGHT ILLUMINATED. AFTER APPROXIMATELY 5 MINS APU FAULT EXTINGUISHED. ACFT GROUNDED. PERFORMED APU BITE REF FIM 49-60, TASK 801. FOUND FAULT 49-61223 CURRENT STATUS- WOULD NOT CLEAR ON SUBSEQUENT STARTS. T/S IAW FIM 49-60, TASK 812. REPLACED INLET TEMP SENSOR REF AMM 49-61-31. ETOPS SIGNIFICANT SYS GROUND VERIFICATION SUCCESSFUL. APU OPS AND BITE CK GOOD.