TM 9-2320-386-10 Change 1 3-13 MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION Table 3-1. Troubleshooting (Contd). Step 4. If ECU continues to fail to operate, notify unit maintenance. Step 5. If problem persists, inflate/deflate tires manually (para. 3-9) and notify unit maintenance. END OF TESTING! 26. TIRES WILL NOT INFLATE/DEFLATE Step 1. Check for loose wiring harness connectors on power manifold. If loose, reconnect. Step 2. Check for loose wiring harness connectors on back of ECU. If loose, reconnect. Step 3. Visually inspect ECU, manifold, and wheel valves for damage. If damaged, notify unit maintenance. Step 4. Check tire pressure. If below 10 psi (69 kPa), CTIS will not inflate tire. Step 5. If problem persists, inflate/deflate tires manually (para. 3-9) and notify unit maintenance. END OF TESTING! COMPRESSED AIR SYSTEM 27. Deleted 28. WATER APPEARS WHEN AIR RESERVOIRS ARE DRAINED Notify unit maintenance.