Rear Side Airbag (hereinafter referred to RSAB) is located in driver and passenger side rear seat.
It protects passenger's head and shoulder in broad collision.
RSAB 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 RSAB directly, Current of measuring device may cause unexpected air bag deploy.
The SRSCM sets DTC B1431 if there is a short to ground in DRSAB 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 Resistance
Short to ground in DRSAB harness.
Poor connection of connected part.
Poor connection between shorting bar and release pin.
Faulty DRSAB.
Faulty SRSCM.
Enable Conditions
Ignition "ON"
Threshold Value
DRSAB Squib line Voltage is < 0.9V
Diagnostic Time
Qualification
More than 2.5s (250ms x 10)
De-Qualification
More than 5s
Test Condition
Voltage
Ignition ON
0.9V = Squib line Voltage = 2.9V