DTC B1328 FIS (Front Impact Sensor)-Driver Defect; DTC B1333 FIS (Front Impact Sensor)-Passenger Defect: General Description

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.