1998 Nissan Frontier Owner's Manual - Page 39

After the child restraint is removed and the seat belt is allowed to wind back into the retractor, the automatic locking mode (child restraint mode) is canceled; the emergency locking retractor may be used as normal and will only lock during a sudden stop or impact. ARS1107 ARS1108 4. Allow the belt to retract. Pull up on the belt to remove any slack in the belt. 5. Before placing the child in the child restraint, use force to tilt the child restraint from side to side, and tug it forward to make sure it is securly held in place. 6. Ensure the retractor is in the automatic locking mode by trying to pull more belt out of the retractor. If you cannot pull any more belt webbing out of the retractor, the belt is in the automatic locking mode. 7. Check to make sure the child restraint is properly secured prior to each use. If the lap belt is not locked, repeat steps three through six. 1-32 Seats, restraints and supplemental air bag systems