B2290

DTC B2290 [TWO-STEP DEPLOYMENT CONTROL SYSTEM]

System Malfunction Location

- Seat weight sensor ID mismatch (Air bag system warning light DTC 15 is displayed)
- Seat weight sensor communication error (Air bag system warning light DTC 16 is displayed)

Detection Condition

WARNING:
- Detection conditions are for understanding the DTC outline before performing an inspection. Performing an inspection according to only the detection conditions may cause injury due to an operating error, or damage the system. When performing an inspection, always follow the inspection procedure.

- Error signal is detected between SAS control module and seat weight sensor control module
- Seat weight sensor ID mismatch

Possible Causes

- Seat weight sensor control module connector malfunction
- Open or short circuit in the wiring harness between the battery and the seat weight sensor control module
- Open or short circuit in the wiring harness between the SAS control module and seat weight sensor control module
- Open circuit in the wiring harness between the seat weight sensor control module and body ground
- Seat weight sensor calibration not properly set
- Communication error between SAS control module and seat weight sensor control module
- Seat weight sensor control module internal malfunction
- Seat weight sensor connector malfunction
- Seat weight sensor malfunction
- SAS control module malfunction

System Wiring Diagram





Diagnostic Procedure