Hyundai Sonata LF: SRSCM / Schematic Diagrams
| Circuit Diagram (1) |
| Circuit Diagram (2) |
| Circuit Diagram (3) |
| SRSCM Connector Terminal |
| Pin | Function (Connector A) | Pin | Function (Connector B) |
| A1 | IGN-1 | B1 | Side impact sensor front, Passenger-High (+) |
| A2 | Front impact sensor driver-High (+) | B2 | Side impact sensor front, Passenger-Low (-) |
| A3 | Front impact sensor driver-Low (-) | B3 | Side impact sensor front, Driver-High (+) |
| A4 | Front impact sensor passenger-High (+) | B4 | Side impact sensor front, Driver-Low (-) |
| A5 | Front impact sensor passenger-Low (-) | B5 | Pressure side impact sensor passenger-High (+) |
| A6 | C-CAN ACU to Vehicle-Low (-) | B6 | Pressure side impact sensor passenger-Low (-) |
| A7 | C-CAN ACU to Vehicle-High (+) | B7 | Pressure side impact sensor driver-High (+) |
| A8 | Local CAN IMU to ESC-Low (-) | B8 | Pressure side impact sensor driver-Low (-) |
| A9 | Local CAN IMU to ESC-High (+) | B9 | - |
| A10 | - | B10 | - |
| A11 | - | B11 | Ground |
| A12 | Driver airbag 1st stage-High (+) | B12 | Retractor pretensioner front, Driver-Low (-) |
| A13 | Driver airbag 1st stage-Low (-) | B13 | Retractor pretensioner front, Driver-High (+) |
| A14 | Passenger airbag 1st stage-Low (-) | B14 | Retractor pretensioner front, Passenger-High (+) |
| A15 | Passenger airbag 1st stage-High(+) | B15 | Retractor pretensioner front, Passenger-Low (-) |
| A16 | Passenger airbag active vent-High (+) | B16 | Curtain airbag driver-Low (-) |
| A17 | Passenger airbag active vent-Low (-) | B17 | Curtain airbag driver-High (+) |
| A18 | - | B18 | Side airbag front, driver-High (+) |
| A19 | - | B19 | Side airbag front, driver-Low (-) |
| A20 | - | B20 | Side airbag front, passenger-Low (-) |
| A21 | Seat belt reminder | B21 | Side airbag front, passenger-High (+) |
| A22 | Crash output | B22 | - |
| A23 | Driver airbag 2nd stage-High (+) | B23 | - |
| A24 | Driver airbag 2nd stage-Low (-) | B24 | - |
| A25 | Passenger airbag 2nd stage-Low (-) | B25 | - |
| A26 | Passenger airbag 2nd stage-High (+) | B26 | - |
| A27 | Passenger airbag OFF lamp (telltale lamp) | B27 | Seat belt buckle sensor front, Driver-High (+) |
| A28 | - | B28 | Seat belt buckle sensor front, Driver-Low(-) |
| A29 | - | B29 | - |
| A30 | - | B30 | - |
| A31 | - | B31 | - |
| A32 | - | B32 | - |
| A33 | - | B33 | Seat belt buckle sensor front, Passenger-Low (-) |
| A34 | - | B34 | Curtain airbag passenger-Low (-) |
| A35 | - | B35 | Curtain airbag passenger-High (+) |
| A36 | Knee airbag driver-Low (-) | B36 | Anchor pretensioner driver-High (+) |
| A37 | Knee airbag driver-High (+) | B37 | Anchor pretensioner driver-Low (-) |
| A38 | - | B38 | Anchor pretensioner passenger-Low (-) |
| A39 | - | B39 | Anchor pretensioner passenger-High (+) |
| A40 | - | B40 | - |
| A41 | - | B41 | - |
| A42 | - | B42 | - |
| A43 | - | B43 | - |
| A44 | - | B44 | Seat belt buckle sensor front, Passenger-High (-) |
Seat Belt Buckle Switch (BS) Repair procedures
Removal 1. Disconnect the battery negative cable, and wait for at least three minutes before beginning work. 2. Remove the front seat assembly...
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