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 B1405 if there is short to power harness in PSIS harness.
Item
Detecting Condition
Possible cause
DTC Strategy
Check voltage
Short to power in PSIS harness.
Faulty PSIS.
Faulty SRSCM.
Enable Conditions
Ignition "ON"
Threshold Value
PSIS no acceleration data, and line voltage >11V
Diagnostic Time
Qualification
Ini(Start Up):0.2s (100ms x 2)
Steady:500µs x 8 + 2.2s (2 times)
De-Qualification
Ini(Start Up):1 time
Steady:1 time