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 B1328 if there is any fault in Driver side front impact sensor.
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 | ● FIS sends "Sensor Defect" message to the ACU (7Dhex) continuosly | ||
Diagnostic Time | Qualification | ●Less than 2 sec during the Normal diagnosis. And less than 5 secs during the initial diagnosis. | |
De-Qualification | ● On the Next Power on reset of the SIS/FIS, which occurs in every 25.5secs after the Fault qualification. | ||
