TM 10-3930-664-10 MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 15. STEERING SYSTEM NOT FUNCTIONING PROPERLY Step 1.   Check if steering bypass valve is in OPEN position. Position steering bypass valve to CLOSED Position Step 2.   Check hydraulic system reservoir oil level for low indication (no oil in sight gauge.) Add oil until oil appears in sight gauge.  Refer to L010-3930-664-12. Step 3.   Check for leaks at steering control unit, priority valve, steering system lines and fittings, or steering cylinders. Report any leaks to Organizational Maintenance. 3-10