B1209

B1209 FRONTAL COLLISION DETECTION

Description

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

OPERATION
The air bag and seat belt pre-tensioners for driver and front seat passenger are operated by the decision of the diagnosis sensor unit (ACU) out signal transmitted because of the frontal collision.

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

DTC Logic

DTC DETECTION LOGIC






DTC CONFIRMATION PROCEDURE (With CONSULT-III)

Step 1-2:

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

Step 1:

Step 1 (Continued)-7: