A1 General module control unit

Plug connector overview

NumberX-pin, colourDescription
X25354-pin, blackPlug connector General module control unit
X25426-pin, blackPlug connector General module control unit
X33215-pin, blackPlug connector General module control unit

Pin assignments at plug connector X253

PinTypeDescription / Signal typeConnection /
Measuring notes
1ELoad ground, central locking and window regulatorsWiper switch
   
2 Not used 
   
3ESignal, wiper switch 2Wiper switch
   
4ESignal, power window switch, passenger's door, openDriver's door module Power window switch, passenger's door
   
5ESignal, power window switch, driver's side, openDriver's door module
   
6ESignal, boot lid button open from insideRear lid release switch (interior)
   
7ESignal, center-lock buttonHazard warning/central locking switch
   
8ESignal, interior light switch, continuous operationInterior/reading lamp, front
   
9E/AK-bus signalK-bus connector
   
10MGroundGround point
   
11ASignal, wiper relayWiper relay 1
   
12ASignal, headlight washer pump relayRelay, front washer pump
   
13AMotor signal, ZV unit lock driver's doorSystem lock, driver's door
   
14AMotor signal, ZV unit central arrestCentral locking drive, oddments compartment
   
15 Not used 
   
16AMotor signal, ZV unit central arrestSystem lock, passenger's door
   
17AMotor signal, unlock boot lidCentral locking drive, boot lid
   
18ASignal Interior lightConnector Interior light
   
19ESignal, status of antitheft alarm systemWiper switch
   
20ESignal, unlock driver's doorSystem lock, driver's door
   
21ESignal, convertible top lowered Mech. convertible top onlySwitch, convertible top lowered
   
22ESignal, lock driver's doorSystem lock, driver's door
   
23 Not used 
   
24 Not used 
   
25ESignal, front passenger's door contactSystem lock, passenger's door
   
26ESignal, driver's door contactSystem lock, driver's door
   
27ETerminal RFuse F12
   
28 Not used 
   
29 Not used 
   
30ASignal, wiper relay for speed 2Wiper relay 2
   
31 Not used 
   
32AMotor signal, ZV unit central arrestSystem lock, driver's door
   
33AMotor signal, ZV unit unlockSystem lock, passenger's door
   
34AMotor signal, ZV unit unlockCentral locking drive, oddments compartment
   
35AMotor signal, ZV unit unlockCentral locking drive, fuel filler flap
   
36 Not used 
   
37 Not used 
   
38 Not used 
   
39 Not used 
   
40ESwitch signal, window regulator passenger's door closedDriver's door module Power window switch, passenger's door
   
41ESignal, power window switch, driver's side, closedDriver's door module
   
42ESignal, boot lid contactCentral locking drive, boot lid
   
43 Not used 
   
44 Not used 
   
45ESignal Return contact, wiper rest positionWiper motor
   
46ESignal, potentiometer for interval timeWiper switch
   
47ETerminal 30Fuse F10
   
48 Not used 
   
49ESignal, data line ZV remote controlElectrochromic interior rear view mirror
   
50AMotor signal, ZV unit central arrestCentral locking drive, fuel filler flap
   
51AMotor signal, ZV unit unlockSystem lock, driver's door
   
52 Not used 
   
53 Not used 
   
54AMotor signal, ZV unit lockSystem lock, passenger's door
   

Pin assignments at plug connector X254

PinTypeDescription / Signal typeConnection /
Measuring notes
1 Not used 
   
2 Not used 
   
3 Not used 
   
4 Not used 
   
5ASignal, status of antitheft alarm systemTilt sensor or Siren and tilt alarm sensor
   
6ESignal, tilt alarm sensorTilt sensor or Siren and tilt alarm sensor
   
7ESignal, front lid contactBonnet contact switch
   
8AControl signal, DWA siren alarmHorn for antitheft alarm system or Siren and tilt alarm sensor
   
9 Not used 
   
10EMotor signal, unlock boot lidSwitch, boot lid/tailgate lock
   
11 Not used 
   
12 Not used 
   
13 Not used 
   
14 Not used 
   
15 Not used 
   
16 Not used 
   
17 Not used 
   
18 Not used 
   
19 Not used 
   
20 Not used 
   
21 Not used 
   
22ASignal, electrical load cut-out 2Connector, electrical load cut-out 2
   
23ASignal, DWA LEDElectrochromic interior rear view mirror
   
24ESignal, interior protectionInterior movement detector
   
25 Not used 
   
26 Not used 
   

Pin assignments at plug connector X332

PinTypeDescription / Signal typeConnection /
Measuring notes
1ESupply for interior lights, washer pump, tailgate/rear lid release and load cutoutFuse F26
   
2ASignal, washer pumpWindscreen washer pump
   
3ASignal, load cutoutConnector Load cut-out
   
4 Not used 
   
5 Not used 
   
6ASignal, front passenger's power window motor, openPassenger's window motor
   
7ASignal, driver's power window motor, openDriver's window motor
   
8ESupply, front window regulatorFuse F46
   
9ESupply, central locking systemFuse F11
   
10 Not used 
   
11 Not used 
   
12 Not used 
   
13ASensor groundPassenger's window motor
   
14ASignal, driver's power window motor, closedDriver's window motor
   
15MLoad ground, central locking and window regulatorsGround point