Lexus IS250 IS220d GSE20 ALE20 - SUPPLEMENTAL RESTRAINT SYSTEM
AIRBAG SYSTEM - SYSTEM DIAGRAM
| Transmitting ECU (Transmitter) | Receiving ECU | Signals | Communication method |
| Center Airbag Sensor Assembly | ECM | Crash detection signal Driver seat buckle switch signal | CAN |
| Center Airbag Sensor Assembly | Seat Belt Control ECU | Driver seat buckle switch signal Passenger seat buckle switch signal Buckle switch malfunction signal | CAN |
| Center Airbag Sensor Assembly | Main Body ECU | Driver seat buckle switch signal | CAN - BEAN |
| Center Airbag Sensor Assembly | Combination Meter Assembly | SRS warning light ON demand signal Driver seat buckle switch signal Diagnosis signal (DTC) | CAN - BEAN |
| Combination Meter Assembly | Center Airbag Sensor Assembly | Vehicle speed signal | BEAN - CAN |
| ECM | Center Airbag Sensor Assembly | E/G speed signal Accelerator opening angle information Accelerator opening angle signal Shift position signal Test mode signal Stop signal | CAN |
LEXUS IS250, IS220d / GSE20 ALE20