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 B132900 if there is any error in communication between DFIS and SRSCM.
Item
Detecting Condition
Possible cause
DTC Strategy
Check Data
Short to power in harness.
Short to ground in harness.
Poor connection of connected part(open).
Faulty DFIS.
Faulty SRSCM.
Enable Conditions
Ignition "ON"
Threshold Value
DFIS no acceleration data
DFIS High or Low of wire ignition short
DFIS High or Low of wire Open
Diagnostic Time
Qualification
More than 1 sec
De-Qualification
More than 2 sec