Front Impact Sensor(FIS)located at both sides of the front of engine room detects head-on collision.
When FIS delivers collision signal to SRSCM, SRSCM checks if safing sensor located in SRSCM detects collusion.
and if both FIS and safing sensor detects collision simultaneously, SRSCM operates front air bag.
The SRSCM sets DTC B1329 if there is any error in communication between DFIS and SRSCM
Item | Detecting Condition | Possible cause | |
DTC Strategy |
•
Check Data | 1. Poor connection of connected part. 2. Faulty DFIS. 3. Faulty SRSCM. | |
Enable Conditions |
•
Ignition "ON" | ||
Threshold Value |
•
DFIS no acceleration data, and line voltage is ok (between 3V and 11V)
•
DFIS High or Low of wire ignition short or Short to ground
•
DFIS High or Low of wire Open | ||
Diagnostic Time | Qualification |
•
More than 0.1~6 sec | |
De-Qualification |
•
More than 1 sec | ||
