| Pin | Type | Description / Signal type | Connection /
Measuring notes |
|---|
| 1 | E | Signal, heat exchanger temperature | Heating heat exchanger temperature sensor, left |
| | | |
| 2 | E | Signal, heat exchanger temperature | Heating heat exchanger temperature sensor, right |
| | | |
| 3 | E | Signal, temperature after evaporator | Evaporator temperature sensor |
| | | |
| 4 | | Not used | |
| | | |
| 5 | | Not used | |
| | | |
| 6 | M | Sensor ground | Ground connector |
| | | |
| 7 | A | Signal, electric auxiliary heater | Electric auxiliary heater diesel engine |
| | | |
| 8 | | Not used | |
| | | |
| 9 | | Not used | |
| | | |
| 10 | A | Supply, stepper motors | Connector X01128 |
| | | |
| 11 | A/E | Signal, LIN bus | LIN-bus connector X01129 |
| | | |
| 12 | M | Ground, stepper motors | Connector X01131 |
| | | |
| Pin | Type | Description / Signal type | Connection /
Measuring notes |
|---|
| 1 | A/E | Signal, LIN bus | Blower output stage |
| | | |
| 2 | A | Voltage supply, AUC sensor | AUC sensor |
| | | |
| 3 | E | Signal, AUC sensor | AUC sensor |
| | | |
| 4 | A | Supply, condensation (fogging) sensor | Condensation sensor |
| | | |
| 5 | E | Signal, condensation (fogging) sensor | Condensation sensor |
| | | |
| 6 | A/E | Signal, CAN-bus | Connector, CAN bus |
| | | |
| 7 | A/E | Signal, CAN-bus | Connector, CAN bus |
| | | |
| 8 | A | Voltage supply, refrigerant pressure sensor | Coolant pressure sensor |
| | | |
| 9 | E | Signal, refrigerant pressure sensor | Coolant pressure sensor |
| | | |
| 10 | A | Voltage supply, solar sensor | Solar sensor |
| | | |
| 11 | E | Solar sensor signal, left | Solar sensor |
| | | |
| 12 | E | Solar sensor signal, right | Solar sensor |
| | | |
| 13 | M | Ground, solar sensor | Solar sensor |
| | | |
| 14 | A | Signal, electric auxiliary heater | Digital diesel electronics control unit |
| | | |
| 15 | A | Signal, refrigerant control valve | Control valve, refrigerant compressor |
| | | |
| 16 | A | Signal, heat exchanger water valve, left | Water valves |
| | | |
| 17 | A | Signal, heat exchanger water valve, right | Water valves |
| | | |
| 18 | A | Signal, auxiliary water pump | Auxiliary water pump |
| | | |
| 19 | A | Signal, rear window defogger | Rear defogger relay |
| | | |
| 20 | A | Signal, heated windscreen water jets | Heated windscreen water jets |
| | | |
| 21 | M | Ground, refrigerant pressure sensor | Coolant pressure sensor |
| | | |
| 22 | A | Voltage supply, rear compartment potentiometer | Rear compartment mixing flap potentiometer |
| | | |
| 23 | E | Signal, rear compartment mixer flap potentiometer | Rear compartment mixing flap potentiometer |
| | | |
| 24 | E | Signal, fresh air temperature sensor | Fresh air temperature sensor |
| | | |
| 25 | M | Sensor ground | Ground connector |
| | | |
| 26 | M | Ground, rear compartment potentiometer | Rear compartment mixing flap potentiometer |
| | | |