| Pin | Type | Description / Signal type | Connection /
Measuring notes |
|---|
| 1 | M | Ground | Ground splice |
| | | |
| 2 | E/A | K-bus signal line | K-bus splice |
| | | |
| 3 | E | Pressure signal | High pressure switch |
| | | |
| 4 | M | Ground High pressure switch | High pressure switch |
| | | |
| 5 | A | Power High pressure switch 5 V stabilized | High pressure switch |
| | | |
| 6 | E | Nighttime illumination signal | Terminal 58g splice |
| | | |
| 7 | | Not used | |
| | | |
| 8 | | Not used | |
| | | |
| 9 | | Not used | |
| | | |
| 10 | E | Voltage supply, terminal 15 | Fuse F19 |
| | | |
| 11 | E | Consumer cut-off signal | Consumer cut-off splice |
| | | |
| 12 | | Not used | |
| | | |
| 13 | M | Blower control, stage 4/defrost | Relay, defrost |
| | | |
| 14 | A | Relay control Rear defogger relay | Rear defogger relay |
| | | |
| 15 | A | Auxiliary water pump control | Auxiliary water pump |
| | | |
| 16 | A | Activation, water valve | Water valve assembly |
| | | |
| 17 | | Not used | |
| | | |
| 18 | E | Throttle actuator terminal 30 voltage supply | Fuse F6 |
| | | |
| Pin | Type | Description / Signal type | Connection /
Measuring notes |
|---|
| 1 | | Not used | |
| | | |
| 2 | | Not used | |
| | | |
| 3 | | Not used | |
| | | |
| 4 | A | Sensor signal Evaporator temperature sensor | Evaporator temperature sensor |
| | | |
| 5 | E | Sensor ground Evaporator temperature sensor | Evaporator temperature sensor |
| | | |
| 6 | E | Signal, blower switch stage 0 (blower OFF) | Blower switch |
| | | |
| 7 | E | Actuating signal Fresh air flap motor | Fresh air flap motor |
| | | |
| 8 | A | Actuating signal Fresh air flap motor | Fresh air flap motor |
| | | |
| 9 | A | Actuating signal Fresh air flap motor | Fresh air flap motor |
| | | |
| 10 | E | Actuating signal Fresh air flap motor | Fresh air flap motor |
| | | |
| 11 | | Not used | |
| | | |
| 12 | | Not used | |
| | | |