Front Side Impact Sensor(FSIS) is located in both side of center pillar detects broad collision. When SIS delivers collision signal to SRSCM, SRSCM checks if safing sensor located in SRSCM detects collusion. and if both SIS and safing sensor detects collision simultaneously, SRSCM operates side air bag and curtain air bag.
The SRSCM sets DTC B1409 if there is any error in communication between DSIS and SRSCM.
Item | Detecting Condition | Possible cause | |
DTC Strategy | ● Check current(PWM type) | ● Faulty DSIS circuit. ● Faulty DSIS. ● Faulty SRSCM. | |
Enable Conditions | ● Ignition "ON" | ||
Diagnostic Time | Qualification | ● More than 1 sec | |
De-Qualification | ● More than 2 sec | ||
