A1 General module control unit

Connector location views

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
1ESignal, wiper switch 1Windscreen wiper switch
   
2 Not used 
   
3ESignal, wiper switch 2Windscreen wiper switch
   
4ESignal, front passenger's power window switch, openPassenger's door power window switch
   
5ESignal, driver's power window switch, openSwitch block, driver's door
   
6ESignal, boot lid button open from insideRear lid release switch (interior)
   
7ESignal, centerlock 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
   
12ASignal, headlight washer pump relayHeadlight washer module
   
13AMotor signal, ZV unit lock driver's doorSystem lock, driver's door
   
14AMotor signal, ZV unit central arrestCentral locking drive, glovebox
   
15 Not used 
   
16Awith remote control: Motor signal, ZV unit central arrestSystem lock, passenger's door
   
17AMotor signal, unlock boot lidCentral locking drive, boot lid/tailgate
   
18ESignal Interior lightConnector Interior light
   
19ESignal, wash switchWindscreen wiper switch
   
20ESignal, unlock driver's doorSystem lock, driver's door
   
21ESignal, convertible top lid lock, driver's sideSwitch, convertible top cover locked, left
   
22ESignal, lock driver's doorSystem lock, driver's door
   
23ESignal, convertible top lid motor unlockedSwitch, convertible top cover drive
   
24ESignal, convertible top lid lock, passenger's sideSwitch, convertible top cover locked, right
   
25ESignal, front passenger's door contactSystem lock, passenger's door
   
26ESignal, driver's door contactSystem lock, driver's door
   
27ETerminal RFuse F9
   
28 Not used 
   
29 Not used 
   
30ASignal, wiper relay for speed 2Wiper relay
   
31ARelay activation, convertible top coverRelay, convertible top 1
   
32AMotor signal, ZV unit central arrestSystem lock, driver's door
   
33Awith remote control: Motor signal, ZV unit unlockSystem lock, passenger's door
   
34 Not used 
   
35AMotor signal, ZV unit unlockCentral locking drive, fuel filler flap
   
36AMotor signal, ZV unit lockCentral locking drive, glovebox
   
37ESignal Glovebox closedSwitch, glovebox central locking
   
38 Not used 
   
39 Not used 
   
40ESwitch signal, passenger's window regulator closedPassenger's door power window switch
   
41ESignal, driver's power window switch, closedSwitch block, driver's door
   
42ESignal, boot lid contactCentral locking drive, boot lid/tailgate
   
43ESignal Open convertible top cover Mech. convertible top onlySwitch centre
   
44ESignal, boot lid button, openLicence plate lights
   
45ESignal Return contact, wiper rest positionConnector Return contact, wiper rest position
   
46ESignal, potentiometer for interval timeWindscreen wiper switch
   
47ETerminal 30Fuse F49
   
48 Not used 
   
49ESignal, data line ZV remote controlElectrochromic interior rear-view mirror Remote control central locking
   
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 
   
54Awith remote control: Motor signal, ZV unit lockSystem lock, passenger's door
   

Pin assignments at plug connector X254

PinTypeDescription / Signal typeConnection /
Measuring notes
1 Not used 
   
2ESignal, rear driver's side power window switch, closedSwitch block, driver's door
   
3ESignal, rear passenger's side power window switch, closedPassenger's door power window switch
   
4ECentral switch signal, window regulator closedSwitch block, driver's door
   
5ESignal, status of antitheft alarm systemTilt monitoring
   
6ASignal, tilt alarm sensorTilt monitoring
   
7ESignal, front lid contactFront lid contact switch
   
8AControl signal, DWA siren alarmHorn for antitheft alarm system
   
9 Not used 
   
10 Not used 
   
11 Not used 
   
12 Not used 
   
13 Not used 
   
14ESignal, rear driver's side power window switch, openSwitch block, driver's door
   
15ESignal, rear passenger's side power window switch, openPassenger's door power window switch
   
16ECentral switch signal, window regulator openSwitch block, driver's door
   
17 Not used 
   
18 Not used 
   
19ESignal, interior protectionControl unit, interior protection II
   
20 Not used 
   
21 Not used 
   
22ASignal, switch off consumer loadConnector Load cutout
   
23ASignal, DWA LEDElectrochromic interior rear-view mirror
   
24ESignal, interior protectionControl unit, interior protection I
   
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 F52
   
2ASignal, washer pumpWasher pump
   
3ASignal, switch off consumer loadConnector Load cutout
   
4ASignal, rear driver's side power window motor, closedWindow regulator motor, rear left
   
5ASignal, rear passenger's side power window motor, closedWindow regulator motor, rear right
   
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, openWindow regulator motor, rear left
   
12ASignal, rear passenger's side power window motor, openWindow regulator motor, rear right
   
13ASignal, front passenger's power window motor, closedPassenger's window motor
   
14ASignal, driver's power window motor, closedDriver's window motor
   
15MLoad ground, central locking and window regulatorsGround point