B1209

B1209 FRONTAL COLLISION DETECTION





Description
The air bags and seat belt pre-tensioners for driver and passenger are activated by the air bag diagnosis sensor unit signal transmitted at the time of the frontal collision.




DTC Logic

DTC DETECTION LOGIC






DTC CONFIRMATION PROCEDURE
1.CHECK SELF-DIAG RESULT
With CONSULT-III
1. Turn ignition switch ON.
2. Perform "AIR BAG" Self Diagnostic Result.
Without CONSULT-III
1. Turn ignition switch ON.
2. Check the air bag warning lamp status. Diagnosis With Air Bag Warning Lamp.

NOTE:
SRS does not enter the diagnosis mode if no malfunction is detected in the user mode.
Is malfunctioning part detected?
YES - SEE Diagnosis Procedure.
NO - INSPECTION END




Diagnosis Procedure

WARNING:
- Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait at least 3 minutes or more. (To discharge backup capacitor.)
- Never use unspecified tester or other measuring device.
1.PERFORM COLLISION DIAGNOSIS
Perform collision diagnosis. When SRS Is Activated In A Collision or When SRS Is Not Activated In A Collision.
Is collision diagnosis complete?
YES - GO TO 2.
NO - INSPECTION END
2.FINAL INSPECTION
Perform "AIR BAG" Self Diagnostic Result.
Is the inspection result normal?
YES - INSPECTION END
NO - Perform diagnosis of applicable DTC. Testing and Inspection.