Table 2-2. Operator/Crew Preventive Maintenance Checks and Services (Contd). ITEM NO. INTERVAL ITEM TO CHECK/ SERVICE PROCEDURE NOT FULLY MISSION CAPABLE IF: Change 1 2-27 TM 9-2320-386-10 15 During Central (Contd) Operation tire (Contd) inflation system (Contd) b. If correct tire pressure cannot be attained, deactivate CTIS by switching ECU (2) to OFF position. Manually inflate/deflate tires (para. 3-9). MAKE THE FOLLOWING WALK-AROUND CHECKS: VEHICLE EXTERIOR Check condition of: a. Windshield. b. Windshield wipers. c. Mirrors (left and right). d. All locking and fastening devices. e. Operation of doors and side windows. f. Operation of headlights, taillights, stoplights, turn signals, and side marker lights, and convoy lights, if installed. 2 1 16 After Operation NOTE Item 16 will be accomplished as the walk-around inspection is performed. NOTE If tire pressure falls below 10 psi (69 kPa), CTIS will not inflate tires.