A1 General Module Control Unit B X253 Connector End View
Pin Assignments At Plug Connector X253
| Pin | Type | Description /Signal type | Connection /Measuring notes |
|---|---|---|---|
| 1 | A | Motor signal, ZV unit central arrest | Central locking drive, fuel filler flap |
| 2 | A | Motor signal, unlock trunk lid | Central locking drive, trunk lid/tailgate |
| 3 | E | Signal, unlock Driver's door | X257 Plug connector, Driver's door |
| 4 | A | Signal, license plate light | Licence plate lights |
| 5 | E | Load cutout | Glove box light |
| 6 | E | Signal, trunk lid contact | Central locking drive, trunk lid/tailgate |
| 7 | A | Interior light | Interior/reading lamp, front |
| 8 | Not used | ||
| 9 | A | Motor signal, ZV unit lock Driver's door | X257 Plug connector, Driver's door |
| 10 | E | Signal, unlock front passenger's door | X256 Plug connector, passenger's door |
| 11 | A | Control signal, DWA siren alarm | Horn for antitheft alarm system |
| 12 | Not used | ||
| 13 | Not used | ||
| 14 | Not used | ||
| 15 | E | Signal, interior protection | Control module, interior protection I |
| 16 | E | Supply Signal, interior protection | Control module, interior protection I |
| 17 | Not used | ||
| 18 | A | Motor signal, ZV unit lock | X256 Plug connector, passenger's door |
| 19 | E | Manual headlight vertical aim control Signal Switch, headlight beam height control | Switch, headlight beam height control |
| 20 | A | Motor signal, ZV unit unlock | X257 Plug connector, Driver's door |
| 21 | E | Signal, lock Driver's door | X257 Plug connector, Driver's door |
| 22 | E | Signal, Driver's door contact | X257 Plug connector, Driver's door |
| 23 | A | Signal Heating blower relay | Heating blower relay |
| 24 | E | Signal, trunk lid button, open | Licence plate lights |
| 25 | A | Signal Luggage compartment light | Luggage compartment light |
| 26 | A | Motor signal, ZV unit unlock | Central locking drive, fuel filler flap |
| 27 | A | Signal, status of antitheft alarm system | Horn for antitheft alarm system |
| 28 | E | Signal, lock front passenger's door | X256 Plug connector, passenger's door |
| 29 | E | Signal Rain sensor | Wiper motor |
| 30 | E | Signal, tilt alarm sensor | Tilt monitoring |
| 31 | Not used | ||
| 32 | Not used | ||
| 33 | Not used | ||
| 34 | E | Signal Drive-away protection | Tilt monitoring |
| 35 | Not used | ||
| 36 | Not used | ||
| 37 | E | Manual headlight vertical aim control Signal Switch, headlight beam height control | Switch, headlight beam height control |
| 38 | A | Motor signal, ZV unit unlock | X256 Plug connector, passenger's door |
| 39 | E | Signal Rear window wiper motor | Rear window wiper motor |
| 40 | E | Signal, front lid contact | Hood contacts |
| 41 | Not used | ||
| 42 | E | Signal, front passenger's door contact | X256 Plug connector, passenger's door |
| 43 | Not used | ||
| 44 | Not used | ||
| 45 | USA Not used | ||
| 45 | A | not USA Motor signal, ZV unit central arrest | System lock, passenger's door |
| 46 | Not used | ||
| 47 | E | Signal, interior light switch, continuous operation | Front interior lamp |
| 48 | Not used | ||
| 49 | Not used | ||
| 50 | Not used | ||
| 51 | Not used | ||
| 52 | Not used | ||
| 53 | Not used | ||
| 54 | Not used |