| Pin | Type | Description / Signal type | Connection /
Measuring notes |
|---|
| 1 | | Not used | |
| | | |
| 2 | E | Sensor signal | Evaporator sensor, rear compartment air conditioning |
| | | |
| 3 | A | Sensors (+) | Rear mixing air actuator |
| | | |
| 4 | | Not used | |
| | | |
| 5 | | Not used | |
| | | |
| 6 | | Not used | |
| | | |
| 7 | E | Signal line, night lights | Connector, terminal 58g |
| | | |
| 8 | | Not used | |
| | | |
| 9 | | Not used | |
| | | |
| 10 | | Not used | |
| | | |
| 11 | | Not used | |
| | | |
| 12 | M | Control unit ground | Water valve relay, rear compartment air conditioning |
| | | |
| 13 | M | Control unit ground | Front shutoff valve |
| | | |
| 14 | | Not used | |
| | | |
| 15 | | Not used | |
| | | |
| 16 | | Not used | |
| | | |
| 17 | | Not used | |
| | | |
| 18 | M | Control unit ground | Shutoff valve, rear compartment air conditioning |
| | | |
| 19 | A | Signal Output stage, rear compartment air conditioning | Output stage, rear compartment air conditioning |
| | | |
| 20 | E | Signal, switch off consumer load | General module |
| | | |
| 21 | M | Ground | Ground connector |
| | | |
| 22 | M | Sensor ground | Sensor connector |
| | | |
| 23 | M | Ground | Ground connector |
| | | |
| 24 | E | Voltage supply, terminal 15 | Fuse F68 |
| | | |
| 25 | E | Voltage supply terminal 30 | Rear compartment blower relay |
| | | |
| 26 | E/A | K-bus signal line | General module |
| | | |