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, openPower window switch, passenger's door
   
5 Not used 
   
6 Not used 
   
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 relayWindscreen wiper relay
   
12ASignal, headlight washer pump relayRelay, headlight washer
   
13AMotor signal, ZV unit lock driver's doorSystem lock, driver's door
   
14AMotor signal, ZV unit central arrestSystem lock, rear right door
   
15AMotor signal, ZV unit central arrestSystem lock, rear left door
   
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
   
21 Not used 
   
22ESignal, lock driver's doorSystem lock, driver's door
   
23EDoor contact signalSystem lock, rear right door
   
24EDoor contact signalSystem lock, rear left door
   
25ESignal, front passenger's door contactSystem lock, passenger's door
   
26ESignal, driver's door contactSystem lock, driver's door
   
27ETerminal RFuse F9
   
28ESignal, anti-jamming systemDriver's window motor
   
29ESignal, anti-jamming systemPassenger's window motor
   
30ASignal, wiper relay for speed 2Windscreen wiper relay
   
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 unlockSystem lock, rear left door
   
35AMotor signal, ZV unit unlockCentral locking drive, fuel filler flap
   
36AMotor signal, ZV unit unlockSystem lock, rear right door
   
37 Not used 
   
38 Not used 
   
39 Not used 
   
40ESwitch signal, window regulator passenger's door closedPower window switch, passenger's door
   
41 Not used 
   
42ESignal, boot lid contactCentral locking drive, boot lid
   
43 Not used 
   
44ESignal, boot lid contactBoot lid push-button/licence plate lights
   
45ESignal Return contact, wiper rest positionWiper motor
   
46ESignal, potentiometer for interval timeWiper switch
   
47ETerminal 30Fuse F49
   
48 Not used 
   
49ESignal, data line ZV remote controlElectrochromic interior rear view mirror Aerial diversity
   
50AMotor signal, ZV unit central arrestCentral locking drive, fuel filler flap
   
51AMotor signal, ZV unit unlockSystem lock, driver's door
   
52AMotor signal, ZV unit lockSystem lock, rear right door
   
53AMotor signal, ZV unit lockSystem lock, rear left door
   
54AMotor signal, ZV unit lockSystem lock, passenger's door
   

Pin assignments at plug connector X254

PinTypeDescription / Signal typeConnection /
Measuring notes
1ESignal, rear passenger's side power window switch, closedPower window switch, rear passenger's side
   
2 Not used 
   
3 Not used 
   
4ESignal, rear driver's side power window switch, closedPower window switch, rear driver's side
   
5ASignal, status of antitheft alarm systemTilt sensor
   
6ESignal, tilt alarm sensorTilt sensor
   
7ESignal, front lid contactBonnet contact switch
   
8AControl signal, DWA siren alarmHorn for antitheft alarm system
   
9ASignal, boot lid contactIntermittent wipe/wash control unit, rear
   
10 Not used 
   
11ASignal, water jet heatingHeated water jet, left
   
12ESignal, anti-jamming systemPower window motor, rear passenger's side
   
13 Not used 
   
14 Not used 
   
15 Not used 
   
16ESignal, rear driver's side power window switch, openPower window switch, rear driver's side
   
17ESignal, rear passenger's side power window switch, openPower window switch, rear passenger's side
   
18 Not used 
   
19 Not used 
   
20 Not used 
   
21 Not used 
   
22ASignal, load cutoutGong
   
23ASignal, DWA LEDElectrochromic interior rear view mirror
   
24ESignal, interior protectionInterior movement detector
   
25ASignal, water jet heatingHeated water jet, right
   
26ESignal, anti-jamming systemPower window motor, rear driver's side
   

Pin assignments at plug connector X332

PinTypeDescription / Signal typeConnection /
Measuring notes
1ESupply for interior lights, washer pump, tailgate/rear lid release and load cutoutFuse F52
   
2ASignal, washer pumpWindscreen washer pump
   
3ASignal, load cutoutConnector Load cut-out
   
4ASignal, rear driver's side power window motor, closedPower window motor, rear driver's side
   
5ASignal, rear passenger's side power window motor, closedPower window motor, rear passenger's side
   
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 F48
   
9ESupply, central locking systemFuse F60
   
10ESupply, rear window regulatorFuse F71
   
11ASignal, rear driver's side power window motor, openPower window motor, rear driver's side
   
12ASignal, rear passenger's side power window motor, openPower window motor, rear passenger's side
   
13ASensor groundPassenger's window motor
   
14ASignal, driver's power window motor, closedDriver's window motor
   
15MLoad ground, central locking and window regulatorsGround point