A3 light switching center control unit www.obd365.com

1. A3Lightswitchingcentercontrolunit
Connectorlocationviews
Number
X-pin,
color
Description
X12
54-pin,
black
PlugconnectorLightswitchingcentercontrolunit
PinassignmentsatplugconnectorX12
PinTypeDescription/Signaltype
Connection/
Measuringnotes
1A
SignalRearleftturnsignal
lamp
ConnectorRearleftturnsignal
lamp
2A
Activation,rightbi-xenon
headlight
Xenonheadlight,right
3A
Signal,rightauxiliaryturn
signallamp
Frontrightauxiliaryflasherunit
4E
BrakelightactivationinHDC
mode
ABS/DSCunitDSCall-wheel
drive
5ASignal,leftbrakelightTaillight,left
6ETerminal30FuseF106
7ASignal,leftlowbeamlightLeftlowbeam
8ASignal,righthighbeamlightRighthighbeam
9A
Interface,lightsswitching
center,trailermodule
Trailermodule
10ASignalRightbrakelightConnectorRightbrakelight
11A
Signal,frontrightturnsignal
lamp
Frontrightturnsignallamp
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2. 12A
Signal,left/rightturnsignal
lampswitch
Turnindicator/lowbeamswitch
13A
Signal,highbeam/headlight
flasherswitch
Turnindicator/lowbeamswitch
14ASignal,rearloadsensor
Loadsensor,headlightvertical
aimcontrol
15ETerminal15FuseF32
16ASignal,centerbrakelightCenterbrakelight
17ASignal,licenseplatelightLicenceplatelights
18A
Signal,leftauxiliaryturn
signallamp
Frontleftauxiliaryflasherunit
19A
Signalground,frontload
sensor
Loadsensor,headlightvertical
aimcontrol
20AOuterlefttaillightTaillight,left
21E/AK-bussignalK-busconnector
22ASignal,frontloadsensor
Loadsensor,headlightvertical
aimcontrol
23ASignal,+5Vfrontloadsensor
Loadsensor,headlightvertical
aimcontrol
24ASignal,hazardwarningswitch
Hazardwarning/centrallocking
switch
25EBrakelightConnectorBrakelight
26ASignal,+5Vrearloadsensor
Loadsensor,headlightvertical
aimcontrol
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3. 27ETerminalRFuseF9
28A
Signal,foglightrelay
activation
Foglightrelay
29A
Signal,rearfoglight/taillight,
right
Trunklidlamp,right
30A
Signal,rearfoglight/taillight,
left
Trunklidlamp,left
31MGroundGroundconnector
32MGroundGroundpoint
33ETerminal30FuseF107
34ASignal,rightlowbeamlightRightlowbeam
35ASignal,lefthighbeamlightLefthighbeam
36A
Activation,leftbi-xenon
headlight
Xenonheadlight,left
37AOuterrighttaillightConnectorOuterrighttaillight
38AOuterrighttaillightTaillight,right
39A
Signal,headlightverticalaim
controlQ22motor,left
Actuator,headlightverticalaim
control,left
40A
Signal,headlightverticalaim
controlQ11motor,left
Actuator,headlightverticalaim
control,left
41A
Signal,headlightverticalaim
controlQ12motor,left
Actuator,headlightverticalaim
control,left
42A
Signal,headlightverticalaim
controlQ21motor,left
Actuator,headlightverticalaim
control,left
A3Lightswitchingcentercontrolunithttp://www.bmw-planet.com/diagrams/release/us/zinfo/E46_PA3B.ht
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4. 43A
SignalRearrightturnsignal
lamp
ConnectorRearrightturnsignal
lamp
44ASignal,frontrightparkinglightRightparkinglight
45ASignal,frontleftparkinglightLeftparkinglight
46A
Signalground,rearload
sensor
Loadsensor,headlightvertical
aimcontrol
47ASignalLocatorlighting
Connector,instrumentand
locatorlighting
48A
Signal,lampinhazard
warningswitch
Hazardwarning/centrallocking
switch
49AOuterlefttaillightConnectorOuterlefttaillight
50A
Signal,frontleftturnsignal
lamp
Frontleftturnsignallamp
51A
Signal,headlightverticalaim
controlQ22motor,right
Actuator,headlightverticalaim
control,right
52A
Signal,headlightverticalaim
controlQ11motor,right
Actuator,headlightverticalaim
control,right
53A
Signal,headlightverticalaim
controlQ12motor,right
Actuator,headlightverticalaim
control,right
54A
Signal,headlightverticalaim
controlQ21motor,right
Actuator,headlightverticalaim
control,right
A3Lightswitchingcentercontrolunithttp://www.bmw-planet.com/diagrams/release/us/zinfo/E46_PA3B.ht
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