Nissan Sentra Service Manual: System
SRS air bag system
SRS AIR BAG SYSTEM : System Diagram
SRS AIR BAG SYSTEM : System Description
- The air bag deploys if the air bag diagnosis sensor unit is activated while the ignition switch is in the ON or START position.
- The collision modes for which supplemental restraint systems are activated are different among the SRS systems. For example, the driver air bag module, front passenger air bag module and front seat belt pre-tensioners are activated in a frontal collision but not in a side collision.
SRS Collision Modes
Occupant classification system
OCCUPANT CLASSIFICATION SYSTEM : System Diagram
OCCUPANT CLASSIFICATION SYSTEM : System Description
The occupant classification system (OCS) identifies different size occupants, out of position occupants, and detects if a child seat is present in the front passenger seat. The OCS control unit (2) receives inputs from the occupant classification sensors (1) (located inside the passenger seat cushion assembly). Depending on classification of the passenger, the OCS sends a signal to the air bag diagnosis sensor unit. The air bag diagnosis sensor unit uses this signal and the seat belt buckle switch (passenger seat) signal to determine deployment or non deployment of the passenger front air bag in the event of a collision. Depending on the signals received, the air bag diagnosis sensor unit can disable the passenger front air bag completely. The OCS (weight sensors) must be set to zero point using CONSULT after servicing the OCS system.
NOTE:
- CONSULT can be used to confirm when “zero point reset” for OCS is complete
- Always perform zero point reset after the removal and installation of the seat or when disconnecting the OCS control unit harness connector even if zero point reset has been completed in the past.
- If zero point reset is incomplete, the passenger air bag will be disabled and the passenger air bag off indicator will be ON.
- In case of customer concern, CONSULT can be used to confirm the passenger air bag status (readiness).
Passenger Air Bag Status Conditions
NOTE:
Passenger does not meet Occupant Classification System specifications for passenger air bag activation.
Seat belt warning lamp system
SEAT BELT WARNING LAMP SYSTEM : System Diagram
SEAT BELT WARNING LAMP SYSTEM : System Description
The seat belt warning lamp (1) will remind the driver if the driver or front passenger (US/CAN models) seat belt should be buckled. The system works in conjunction with the occupant classification system.
Refer to SRC-12, "OCCUPANT CLASSIFICATION SYSTEM : System Description".
Seat Belt Warning System Operation
Component parts
Component Parts Location
Driver air bag module
Front passenger air bag off indicator
Front passenger air bag module
Front LH side air bag module
(RH similar)
LH side curtain air bag ...
Diagnosis system (AIR BAG)
Description
CAUTION:
Never use electrical test equipment on any circuit related to the
SRS unless instructed in this Service
Manual. SRS wiring harnesses can be identified by yellow and/or o ...
Other materials:
Summary of functions
The multi-information display presents the driver with a variety of driving-
related data, such as the current outside temperature. The multi-information
display can also be used to change the display settings
and other settings.
Indicators
Driving assist system status display area
Disp ...
Brake fluid
Drain and Refill
CAUTION:
Do not spill or splash brake fluid on painted surfaces. Brake
fluid may damage paint. If brake fluid is
splashed on painted areas, wash it away with water immediately.
Prior to repair, turn the ignition switch OFF, disconnect the ABS
actuator and electric uni ...
Refueling
Opening the fuel tank
cap
Perform the following steps to open the fuel tank cap:
Before refueling the vehicle
Close all the doors and windows, and turn the engine switch off.
Confirm the type of fuel.
â– Fuel tank opening for unleaded gasoline
To help prevent incorrect fueling, your ve ...
