Nissan Sentra Service Manual: Seat belt warning system

Nissan Sentra Service Manual / Restraints / SRS airbag control system / Symptom diagnosis / Seat belt warning system

Seat Belt Warning System Does Not Function

1.SEAT BELT WARNING LIGHT

Turn ignition switch ON.

Does the seat belt warning lamp come ON? YES >> GO TO 2.

NO >> вЂў Check 10A fuse [No. 8, located in the fuse block (J/B)].

Check seat belt buckle switch (driver seat)
Check harness between combination meter and seat belt buckle switch (driver seat).
Check combination meter. Refer to MWI-25, "Fail-Safe".

2.SEAT BELT BUCKLE (DRIVER SEAT)

Fasten the seat belt buckle (driver seat).

Does the seat belt warning lamp go OFF? YES >> GO TO 3.

NO >> вЂў Check seat belt buckle switch (driver seat).

вЂў Check harness between combination meter and seat belt buckle switch (driver seat).

3.OCCUPANT CLASSIFICATION SYSTEM

Have a helper sit in the passenger seat.

Does the seat belt warning lamp go ON? YES >> GO TO 4.

NO >> вЂў Check occupant classification system. Refer to SRC-12, "OCCUPANT CLASSIFICATION SYSTEM : System Description".

вЂў Check harness between occupant classification control unit and air bag diagnosis sensor unit.

4.SEAT BELT BUCKLE (PASSENGER SEAT)

Fasten the seat belt buckle (passenger seat).

Does the seat belt warning lamp go OFF? YES >> System OK.

NO >> вЂў Check seat belt buckle switch (passenger seat).

вЂў Check harness between seat belt buckle switch (passenger seat) and air bag diagnosis sensor unit.

вЂў Replace air bag diagnosis sensor unit. Refer to SR-28, "Removal and Installation".

SRS Air bag warning lamp does not turn ON

Diagnosis Procedure 1.CHECK COMBINATION METER POWER SUPPLY AND GROUND CIRCUIT Check combination meter unit power supply and ground circuit. Refer to MWI-52, "COMBINATION METER : Diagnosis Pr ...

Ventilation, heater & air conditioner

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Other materials:

Parking brake switch
Component Function Check 1.CHECK PARKING BRAKE SWITCH OPERATION Check that brake warning lamp in combination meter turns ON/OFF when parking brake is actuated. Is the inspection result normal? YES >> Inspection End. NO >> Proceed to diagnosis procedure. Refer to BRC-90, " ...

Precaution
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER" The Supplemental Restraint System such as вЂњAIR BAGвЂќ and вЂњSEAT BELT PRE-TENSIONERвЂќ, used along with a front seat belt, helps to reduce the risk or severity of injur ...

Front door glass
Removal and Installation REMOVAL WARNING: Before servicing, turn ignition switch OFF, disconnect both battery terminals and wait at least three minutes. Do not use air tools or electric tools for servicing. NOTE: LH front door panel shown; RH side similar Disconnect the battery ...