Curtain Airbag (hereinafter referred to CAB)is located at driver and passenger side of headliner
It protects passenger's head and shoulder from fragments of glass or something sharpen caused by overturn.
CAB is consist of air bag and inflator.
Air bag reduces impact of collision by fillied up gas.
Inflator keeps gas and uses it to deploy air bag on collision.
Never measure resistance of CAB directly, Current of measuring device may cause unexpected air bag deploy.
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 B1479 if there is a short to ground in PCAB harness.
*In this case, SRSCM checks if there's any fault in circuit by sending current for a while.
Item | Detecting Condition | Possible cause | |
DTC Strategy |
•
Check Voltage |
•
Short to ground in PCAB harness.
•
Poor connection of connected part.
•
Poor connection between shorting bar and release pin.
•
Faulty PCAB.
•
Faulty SRSCM. | |
Enable Conditions |
•
Ignition "ON" | ||
Threshold Value |
•
PCAB Squib line Voltage is < 0.64V | ||
Diagnostic Time | Qualification |
•
More than 2.5s (250ms x 10) | |
De-Qualification |
•
More than 5s(250ms x 20) | ||
Test Condition | Voltage |
Ignition ON | 0.64V ≤ Squib line Voltage ≤ 2.37V |
