For USA And Canada

B1050, B1055 DRIVER AIRBAG MODULE





Description

DTC B1050, B1055 [VB-SHORT] DRIVER AIRBAG MODULE
For driver air bag module, crash is judged by main "G" sensor output signal and sub "G" sensor in front direction.

OPERATION
In case of frontal collision whose acceleration exceeds the specified level, the ignition materials are ignited by electric ignition system. The system burns and introduces the chemical reaction of gas generating materials to generate hot gases that flow into the air bag through a filter and expand the bag.

STRUCTURE
Driver air bag module mainly consists of air bag and inflator which inflates air bag.

INSTALLATION
Driver air bag module is installed on the center of steering wheel with fixed bolts.




DTC Logic

DTC DETECTION LOGIC

With CONSULT-III
DTC No. Index ("SELF-DIAG [CURRENT]"), ("SELF-DIAG [PAST]" or "TROUBLE DIAG RECORD")






DTC CONFIRMATION PROCEDURE (With CONSULT-III)
1.INSPECTION START
Turn ignition switch ON.
- GO TO 2.
2.CHECK SELF-DIAG RESULT
Check the screen of CONSULT-III.
Is malfunctioning part detected?
YES - For USA And Canada.
NO - INSPECTION END.

DTC CONFIRMATION PROCEDURE (Without CONSULT-III)

NOTE:
- SRS will not enter diagnosis mode if no malfunction is detected in user mode.
1.INSPECTION START
Turn ignition switch ON.
- GO TO 2.
2.CHECK AIR BAG WARNING LAMP
Check the warning lamp status.
Is malfunctioning part detected?
YES - Testing and Inspection.
NO - INSPECTION END.




Diagnosis Procedure

With CONSULT-III

WARNING:
- Before servicing, turn ignition switch OFF, disconnect both battery terminals and wait at least 3 minutes. (To discharge backup capacitor.)
- Do not use unspecified tester or other measuring device.

DIAGNOSTIC PROCEDURE
1.CHECK HARNESS CONNECTOR
Check the connection of harness connector.
Is the inspection result normal?
YES - GO TO 2.
NO - Repair or replace harness connector.
2.CHECK WIRING HARNESS
Check the wiring harness externals.
Is the inspection result normal?
YES - GO TO 3.
NO - Repair or replace wiring harness.
3.CHECK DRIVER AIR BAG MODULE
1. Replace driver air bag module.
2. Check the screen of CONSULT-III.
Is the inspection result normal?
YES - INSPECTION END.
NO - GO TO 4.
4.CHECK SPIRAL CABLE CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect driver side air bag module harness connector and body side harness connector.
3. Check continuity between driver side air bag module harness connector and body side harness connector.





4. Check continuity between driver side air bag module harness connector and ground.





Is the inspection result normal?
YES - Check the intermittent incident. Intermittent Incident.
NO - Replace spiral cable.