To avoid rendering the SRS (Supplemental Restraint System) inoperative, which could lead to personal injury or death in the event of a severe frontal collision, extreme caution must be taken when servicing the electrically related systems. All SRS electrical wiring harnesses and connectors are covered with
YELLOW outer insulation. Do not use electrical test equipment on any circuit related to the SRS (air bag).
On vehicles equipped with an air bag, turn the ignition switch to the
position. The negative battery cable must be disconnected (also disconnect the positive battery cable for 1995-96 Sentra) and wait 10 minutes after the cable is disconnected before working on the system. SRS sensors must always be installed with the arrow marks facing the front of the vehicle.