B1429

Description


DTC B1429 SEAT BELT BUCKLE SWITCH RH

The air bag diagnosis sensor unit monitors the seat belt buckle switch RH status. If the control unit detects an open or short condition in the circuit, it will set the DTC.

PART LOCATION

Refer to "SRS Component Connectors" SRS Component Connectors.


DTC Logic


DTC DETECTION LOGIC

With CONSULT





Without CONSULT






DTC CONFIRMATION PROCEDURE (With CONSULT)


1. INSPECTION START

Turn ignition switch ON.
- GO TO 2.

2. CHECK SELF-DIAG RESULT

Check for the DTC on CONSULT.
Is the DTC detected?
YES- Refer to "Diagnosis Procedure" .
NO- Inspection End.

DTC CONFIRMATION PROCEDURE (Without CONSULT)

NOTE:
SRS will not enter diagnosis mode if no malfunction is detected in user mode.

1. IGNITION SWITCH

Turn ignition switch ON.
- GO TO 2

2. IGNITION SWITCH

After air bag warning lamp lights for 7 seconds, turn ignition switch OFF within 1 second.
- GO TO 3

3. WAIT TIME

Wait more than 3 seconds.
- GO TO 4

4. REPEAT STEPS

Repeat steps 1 to 3 twice.
- GO TO 5

5. IGNITION SWITCH

Turn ignition switch ON.
- GO TO 6

6. DIAGNOSTIC MODE

SRS system is now in diagnostic mode and AIR BAG warning lamp flashes. Refer to "Flash Code Index" Manufacturer Code Charts.
-END


Diagnosis Procedure


1. SEAT BELT WARNING LIGHT

Turn ignition switch ON.
Does the seat belt warning lamp come ON?
YES- GO TO 2
NO- Refer to "Seat Belt Warning System Does Not Function" Seat Belt Warning System Does Not Function.

2. SEAT BELT BUCKLE LH

Fasten the seat belt buckle LH.
Does the seat belt warning lamp go OFF?
YES- GO TO 3
NO- Refer to "Seat Belt Warning System Does Not Function" Seat Belt Warning System Does Not Function.

3. OCCUPANT CLASSIFICATION SYSTEM

Have a helper sit in the passenger seat.
Does the passenger air bag off indicator lamp go ON?
YES- GO TO 4
NO- - Check seat belt buckle switch RH.
- Check occupant classification system. Refer to "OCCUPANT CLASSIFICATION SYSTEM : System Description" System Description.
- Check harness between occupant classification control unit and air bag diagnosis sensor unit.

4. SEAT BELT BUCKLE RH

Fasten the seat belt buckle RH.
Does the seat belt warning lamp go OFF?
YES- Inspection End.
NO- - Check seat belt buckle switch RH.
- Check harness between seat belt buckle switch RH and air bag diagnosis sensor unit.
- Check harness between seat belt buckle switch RH and ground.
- Replace air bag diagnosis sensor unit. Refer to "Removal and Installation" Service and Repair.