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
Poor connection of connected part.
Faulty DFIS.
Faulty SRSCM.
Enable Conditions
Ignition "ON"
Threshold Value
FIS no acceleration data, and line voltage is ok (between 3V and 11V)
Diagnostic Time
Qualification
More than 5 ms (500µs x 10)
De-Qualification
More than 10m sec
Test Condition
Voltage
Ignition ON
3V < FIS-Driver line voltage< 11V