Every air bag module has its firing circuit that ignites powder to deploy air bag according to signal of SRSCM.
SRSCM checks every air bag module when ignition "ON". Once any fault is detected, it is erased only by scantool.
If you strike or spin the SRSCM at the IG “ON” state, the seat-belt pretensioner, curtain-airbag or side-airbag could be unfolded and bring on danger. Handle it with care.
The SRSCM sets DTC B1395 if there's any short circuit in harness of every firing circuit to one another.
Item | Detecting Condition | Possible cause | |
DTC Strategy |
•
Check current(PWM type) |
•
Short circuit in squib harness.
•
SRSCM. | |
Enable Conditions |
•
Ignition "ON" | ||
Threshold Value |
•
Squib lines are cross coupled
•
Make other line sink, and one line < 0.6V, then this line is crosscoupled. | ||
Diagnostic Time | Qualification |
•
More than 2ms x 3 | |
De-Qualification |
•
NA | ||
