| Pin | Type | Description/Function | Connection
|
| 1 | E | Terminal 30 | Fuse
|
| 2 | A | Signal, independent heating | Independent heating relay
|
| 3 | E | Signal, independent heating | On-board computer
|
| 4 | E | Signal, independent ventilation | On-board computer
|
| 5 | | not used |
|
| 6 | A | Signal, ventilation flap | IHKA operating switch
|
| 7 | E | Signal, independent ventilation, flap position | IHKA operating switch
|
| 8 | E | Signal, independent heating, flap position | IHKA operating switch
|
| 9 | E | Terminal 61 | Unloader relay
|
| 10 | M | Ground | Ground connection
|
| 11 | E | Terminal R | Fuse F1
|
| 12 | A | Activation, control unit/stop valve | Independent heating/ventilation control unit/ stop valve
|
