Altima 2.5 SL L4-2.5L (QR25DE) (2002)
Air Bag(s) Arming and Disarming: Service and Repair
Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes.
For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not
work on any SRS connectors or wires until at least 3 minutes have passed.