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2012 Volkswagen Passat SE Wiring Cheat Sheet by

Wiring information for a 2012 VW Passat
2012     wiring     vw     volkswagen

2012 Passat SE Wiring Inform­ation

Item
Wire Color
Polarity
Wire Location
12 Volts
red (40A)
+
VESCM, black 52 pin plug, pin 1
Second 12 Volts
red/yellow (40A)
+
VESCM, brown 52 pin plug, pin 42
Starter
red/black (without push-b­utton start)
+
VESCM, brown 52 pin plug, pin 14
Second Starter
pur/yel (sw1), pur/blk (sw2) (push-­button start)
- resistor
start system button, black 4 pin plug, pins 3 and 4
Ignition
black
+
VESCM, brown 52 pin plug, pin 31
Second Ignition
red/blue
+
VESCM, white 52 pin plug, pin 14
Third Ignition
N/A
Accessory
black/­purple (for accessory sense only)
+
VESCM, white 52 pin plug, pin 28 or black 52 pin plug, pin 3
Second Accessory
N/A
Third Accessory
N/A
Keysense
purple/red (push-­button start only)
+
VESCM, brown 52 pin plug, pin 13
Data Bus
N/A
Can Bus High
orange­/green
data
VESCM, brown 52 pin plug, pin 15
Can Bus Low
orange­/brown
data
VESCM, brown 52 pin plug, pin 16
Can Bus Sw
N/A
Power Lock
brown/­green
-
Driver Door Module, gray 32 pin plug, pin 32
Power Unlock
same as power lock
- 180 ohms
Lock Motor
blue/green
5 wire
VESCM, white 52 pin plug, pin 7
Driver Unlock Motor
purple
5 wire
Driver Door Module, black 20 pin plug, pin 12
Passenger Unlock Motor
brown/­yellow
5 wire
VESCM, white 52 pin plug, pin 8
Parking Lights (-)
N/A
Parking Lights (+)
gray/y­ellow
+
VESCM, black 52 pin plug, pin 19
Hazards
brown/red
-
VESCM, brown 52 pin plug, pin 7
Turn Signal (Left)
gray/white (F); black/­white (R)
+
VESCM, black 52 pin plug, pin 10; brown 52 pin plug, pin 51
Turn Signal (Right)
gray/brown (F); black/red (R)
+
VESCM, brown 52 pin plug, pin 50; black 52 pin plug, pin 9
Headlight
white/­black
+
VESCM, black 52 pin plug, pin 22
AutoLights
purple (interrupt to turn off autoli­ghts)
+
VESCM, black 52 pin plug, pin 20
Reverse Light
blue/p­urple
+
VESCM, black 52 pin plug, pin 28
Left Front Door Trigger
brown/­yellow
-
Driver Door Module, black 20 pin plug, pin 7
Right Front Door Trigger
brown/­yellow
-
Passenger Door Module, black 20 pin plug, pin 7
Left Rear Door Trigger
black/gray
-
VESCM, black 52 pin plug, pin 41
Right Rear Door Trigger
black/­green
-
VESCM, black 52 pin plug, pin 30
Dome Superv­ision
red/white
-
VESCM, brown 52 pin plug, pin 10
Trunk/­Hatch Pin
brown/blue or brown/­black
-
VESCM, black 52 pin plug, pin 29
Rear Glass Pin
N/A
Hood Pin
brown/­green
-
VESCM, black 52 pin plug, pin 14
Trunk/­Hatch Release
purple (rear handle switch)
-
VESCM, black 52 pin plug, pin 13
Trunk Release Motor
red/blue
5 wire
VESCM, white 52 pin plug, pin 11
Fuel Door Release
locks/­unlocks along with doors
Factory Alarm Arm
green/­white (driver door key lock)
-
Driver Door Module, black 20 pin plug, pin 16
Factory Alarm Disarm
same as factory alarm arm
- 180 ohms
Disarm No Unlock
Transp­onder and ignition
Trunk Alarm Shunt
N/A
Tachometer
purple­/stripe (2.5L), brown/­stripe (3.6L, 2.0L)
ac
any fuel injector, 2 pin plug, pin 2
Wait to Start
N/A
Neutral Safety
N/A
Clutch Pedal
purple­/white
-
VESCM, brown 52 pin plug, pin 30
Fuel Pump
red/white (2.5L), blue/red (2.0L diesel)
+
fuel pump relay on upper VESCM The VESCM (Vehicle Electrical System Control Module) is the relay box under the driver dash. On 3.6L models, it is black/­green (+) in the driver kick, harness to rear.
Rear Defroster
black/­green
- latched
VESCM, white 52 pin plug, pin 22
Mirror Defroster
yellow
-
Driver Door Module, gray 32 pin plug, pin 28
Left Front Heated Seat
(CAN and LIN bus)
Right Front Heated Seat
(CAN and LIN bus)
Speed Sense
(wheel speed sensor)
Brake Wire
black/red (functions with ignition on only)
+
VESCM, brown 52 pin plug, pin 17
Parking Brake
brown/­yellow
-
parking brake switch, black 2 pin plug, pin 1
Horn Trigger
red/brown
-
VESCM, white 52 pin plug, pin 41
Wipers
white/red
-
VESCM, white 52 pin plug, pin 23
Left Front Window (Up/Down)
use factory alarm arm/disarm
Right Front Window (Up/Down)
see left front window
Left Rear Window (Up/Down)
see left front window
Right Rear Window (Up/Down)
see left front window
Sun Roof (Open/­Close)
white/­purple (tilt up/down) (func w/ign on only)
- resistor
sunroof switch, 4 pin plug, pin 4
Sun Roof (Limit­/Close)
N/A
Memory Seat 1
red/black
- resistor
memory switch or Driver Seat Module, 32 pin plug, pin 12
Memory Seat 2
same as memory seat 1
- resistor
Memory Seat 3
yellow­/black
- resistor
memory switch or Driver Seat Module, 32 pin plug, pin 28
Radio 12V
red/yellow
+
radio, 16 pin plug, pins 15 and 16
Radio Ground
brown
-
radio, 16 pin plug, pin 12
Radio Ignition
(Infot­ainment CAN)
Radio Illumi­nation
(Infot­ainment CAN)
Factory Amp Turn-on
(Infot­ainment CAN)
Power Antenna
N/A
Left Front Speaker (+/-)
brown/­green - brown/blue or green - brown
+,-
radio, 8 pin plug, pins 3 and 7 -- If equipped, the amplifier is under the driver seat. On vehicles with amplifier, the speaker wires are brown/­green - brown/blue (woofer); blue/black - white/­black (midra­nge); white - white/­black (tweeter) at the amplifier, 38 pin plug, pins 18 and 6; 13 and 14; 8 and 20.
Right Front Speaker (+/-)
brown/red - brown/­black or blue - brown
+,-
radio, 8 pin plug, pins 2 and 6 -- If equipped, the amplifier is under the driver seat. On vehicles with amplifier, the speaker wires are brown/red - brown/­black (woofer); red/gray - brown/gray (midra­nge); gray - gray/black (tweeter) at the amplifier, 38 pin plug, pins 15 and 3; 12 and 11; 19 and 7.
Left Rear Speaker (+/-)
red/white - brown/­white or white - brown
+,-
radio, 8 pin plug, pins 4 and 8 -- If equipped, the amplifier is under the driver seat. On vehicles with amplifier, the speaker wires are red/white - brown/­white at the amplifier, 38 pin plug, pins 9 and 21.
Right Rear Speaker (+/-)
red/purple - brown/­purple or yellow - brown
+,-
radio, 8 pin plug, pins 1 and 5 -- If equipped, the amplifier is under the driver seat. On vehicles with amplifier, the speaker wires are red/purple - brown/­purple at the amplifier, 38 pin plug, pins 22 and 10.
Center Channel (+/-)
N/A
Subwoofer (+/-)
white/red - brown/red (1); gray/red - gray/brn (2)
+,-
amplifier, 38 pin plug, pins 16 and 4; 5 and 17 -- If equipped, the amplifier is under the driver seat.
Aux. Audio Input Left (+/-)
yellow - green
+,-
radio, 12 pin plug, pins 1 and 2
Aux. Audio Input Right (+/-)
gray - green
+,-
radio, 12 pin plug, pins 7 and 2

Size and Location of Items

ITEM
SIZE
DEPTH
LOCATION
Headunit
irregular
Left Front Speaker
6.5
3.5
left front door
Left Front Tweeter
1
1
left front dash
Right Front Speaker
6.5
3.5
left front dash
Right Front Tweeter
1
1
left front dash
Left Rear Speaker
6.5
3.5
left rear door
Left Rear Tweeter
1
1
left rear door
Right Rear Speaker
6.5
3.5
right rear door
Right Rear Tweeter
1
1
right rear door
Center Channel
N/A
Subwoofer
under rear deck
Left Front Headrest
Right Front Headrest
Left Rear Headrest
Right Rear Headrest
Satellite Radio Tuner (built into radio)

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