What was found
ON TAXI OUT, AIR SYS 2 OFF, ALERT FOLLOWED SHORTLY BY LEVEL 2, AIR MANIFOLD 2 FAIL, ALERT. SHUTDOWN NR 2 ENG. TROUBLE SHOT, RETURNED NR 2 PNEUMATICS TO NORMAL CONFIG. TROUBLE SHOT IAW FIM TASK 36-23-00-810-804, NO DEFECTS NOTED. PERFORMED NR 2 PNEUMATIC SYS PRESS DECAY CHECK USING APU AIR IAW AMM 36-00-01, 25 SEC & USING ENG BLEED AIR IAW AMM 36-00-02, 48 SEC AT 100 DEG. ALL DECAY TEST PASSED. PERFORMED ENTIRE FUNCTIONAL TEST OF PNEUMATIC SYS NR 2 IAW AMM 36-00-03-5, NO DEFECTS NOTED WITHIN NR 2 PNEUMATIC SYS. PNEUMATIC SYS NR 2 OK FOR SERVICE.