B1209

B1209 FRONTAL COLLISION DETECTION





Description

DTC B1209 FRONTAL COLLISION DETECTION
When crash zone sensor detects component damage resulting from a front collision, the system blinks or illuminates the air bag warning lamp to inform the driver. Malfunctioning can be detected by CONSULT-III.

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

STRUCTURE
It consists of crash zone sensor, air bag diagnosis sensor unit, air bags and seat belt pre-tensioners for driver and front passenger.

INSTALLATION
Exploded View (Driver air bag module), Exploded View (Front passenger air bag module), Exploded View(Crash zone sensor), Diagnosis Sensor Unit (Air bag diagnosis sensor unit), Exploded View (Front LH/RH seat belt pretensioner).




DTC 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. Air Bag Warning Lamp Diagnosis.

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