Electrical Function Schematic, Seat Heater (SIH) - PE91.30-P-2050-97BBA
MODEL 453.0 (except 453.091), 453.3 (except 453.391), 453.4 (except 453.491) with CODE 873 (Left and right driver's seat heating)
MODEL 453.091/391/491 with CODE 873 (Left and right driver's seat heating) except CODE U14 (Climate package)
| Code: | Designation: | Position: |
|---|---|---|
| 1 | Circuit 30, status | 3B |
| 2 | Circuit 15, signal | 4G |
| 3 | Seat heater power supply solenoid switch, actuation | 4C |
| 4 | Terminal 15g, signal | 7F |
| 5 | Terminal 30g, signal | 7D |
| 6 | Seat heater button, status | 9G |
| 7 | Seat heater status indication, signal | 8H |
| 8 | Seat heater pad, actuation | 12C |
| 8 | Seat heater pad, actuation | 11E |
| 9 | Seat heater temperature sensor, signal | 8D |
| F2 | Vehicle interior fuse and relay module | 4E |
| K59/2 | Left seat heater power supply solenoid switch | 4B |
| K59/3 | Right seat heater power supply solenoid switch | 4B |
| N25/4 | Front passenger seat heater control unit | 8D |
| N25/4b1 | Front passenger seat heater temperature sensor | 8B |
| N25/5 | Driver seat heater control unit | 8E |
| N25/5b1 | Driver seat heater temperature sensor | 8C |
| R13/1 | Left front seat cushion heater pad | 12E |
| R13/2 | Left front seat backrest heater pad | 12B |
| R13/3 | Right front seat cushion heater pad | 12F |
| R13/4 | Right front seat backrest heater pad | 12C |
| S2 | Ignition lock | 4H |
| S51/1 | Left front seat heater switch | 8H |
| S51/2 | Right front seat heater switch | 8J |