Diagnostic Test

WARNING: This page is about a different car, the 2016 Infiniti QX60. 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 STEP 2 .

NO
- Check 5A fuse [No. 31, 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 FAIL-SAFE .

SEAT BELT BUCKLE (DRIVER SEAT)

Fasten the seat belt buckle (driver seat).

Does the seat belt warning lamp go OFF?

YES

GO TO STEP 3.

NO
- Check seat belt buckle switch (driver seat).
- Check harness between combination meter and seat belt buckle switch (driver seat).

OCCUPANT CLASSIFICATION SYSTEM

Have a helper sit in the passenger seat.

Does the seat belt warning lamp go ON?

YES

GO TO STEP 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 (PASSENGER SEAT)

Fasten the seat belt buckle (passenger seat).

Does the seat belt warning lamp go OFF?

YES

System OK.

NO
- Check seat belt buckle switch (passenger seat).
- Check harness between seat belt buckle switch (passenger seat) and air bag diagnosis sensor unit.
- Replace air bag diagnosis sensor unit. Refer to REMOVAL AND INSTALLATION .