Seat Belt Warning System Does Not Function

WARNING: This page is about a different car, the 2018 Nissan Titan XD and 2018 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.

SEAT BELT WARNING LIGHT
Turn ignition switch ON.

Does the seat belt warning lamp come ON?

YES

GO TO 2 .

NO
- Check 10A fuse [No. 13, located in the fuse block (J/B)].
- Check seat belt buckle switch LH.
- Check harness between combination meter and seat belt buckle switch LH.
- Check combination meter. Refer to Fail-safe (with type A meter) or Fail-safe (type B meter).
SEAT BELT BUCKLE LH
Fasten the seat belt buckle LH.

Does the seat belt warning lamp go OFF?

YES

GO TO 3.

NO
- Check seat belt buckle switch LH.
- Check harness between combination meter and seat belt buckle switch LH.
OCCUPANT CLASSIFICATION SYSTEM
Have a helper sit in the passenger seat.

Does the seat belt warning lamp go ON?

YES

GO TO 4 .

NO
- Check occupant classification system. Refer to System Description .
- Check harness between occupant classification control unit and air bag diagnosis sensor unit.
SEAT BELT BUCKLE RH
Fasten the seat belt buckle RH.

Does the seat belt warning lamp go OFF?

YES

System OK.

NO
- Check seat belt buckle switch RH.
- Check harness between seat belt buckle switch RH and air bag diagnosis sensor unit.
- Replace air bag diagnosis sensor unit. Refer to Removal and Installation .