Seat-belt Buckle Switch(SBBS) is located in driver and passenger side seat.
SRSCM checks if seatbelt is buckled by signal of SBBS.
SRSCM controls air bag module and BPT differently in accordance with vehicle speed at the moment of collision and signal from SBBS.
The SRSCM sets DTC B151500 if there is any fault in DSBBS circuit.
Item
Detecting Condition
Possible cause
DTC Strategy
Check current
Faulty DSBBS circuit.
Faulty DSBBS.
Faulty SRSCM.
Enable Conditions
Ignition "ON"
Threshold Value
8.8mA < Sensor line current < 9.8mA
Diagnostic Time
Qualification
More than 2 sec
De-Qualification
More than 4 sec