Side Impact Sensor(SIS) 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.
The SRSCM sets DTC B1403 if there is any fault in PSIS circuit.
Item | Detecting Condition | Possible Cause | |
DTC Strategy | ● Check current(PWM type) | ● Faulty PSIS circuit. ● Faulty PSIS. ● Faulty SRSCM. | |
Enable Conditions | ● Ignition "ON" | ||
Threshold Value | ● PSIS 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. | ||
