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.
andand 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 current(PWM type)
Poor connection of connected part.
Faulty DFIS.
Faulty SRSCM.
Enable Conditions
Ignition "ON"
Threshold Value
Driver FIS short, open
Diagnostic Time
Qualification
More than 1 sec
De-Qualification
More than 2 sec