2012 Volkswagen Passat SE Wiring Cheat Sheet by mhowey

12 Volts

red (40A)

+

VESCM, black 52 pin plug, pin 1

Starter

red/black (without push-b­utton start)

+

VESCM, brown 52 pin plug, pin 14

Ignition

black

+

VESCM, brown 52 pin plug, pin 31

Third Ignition

N/A

Second Accessory

N/A

Keysense

purple/red (push-­button start only)

+

VESCM, brown 52 pin plug, pin 13

Can Bus High

orange­/green

data

VESCM, brown 52 pin plug, pin 15

Can Bus Sw

N/A

Power Unlock

same as power lock

- 180 ohms

Driver Unlock Motor

purple

5 wire

Driver Door Module, black 20 pin plug, pin 12

Parking Lights (-)

N/A

Hazards

brown/red

-

VESCM, brown 52 pin plug, pin 7

Turn Signal (Right)

gray/brown (F); black/red (R)

+

VESCM, brown 52 pin plug, pin 50; black 52 pin plug, pin 9

AutoLights

purple (interrupt to turn off autoli­ghts)

+

VESCM, black 52 pin plug, pin 20

Left Front Door Trigger

brown/­yellow

-

Driver Door Module, black 20 pin plug, pin 7

Left Rear Door Trigger

black/gray

-

VESCM, black 52 pin plug, pin 41

Dome Superv­ision

red/white

-

VESCM, brown 52 pin plug, pin 10

Rear Glass Pin

N/A

Trunk/­Hatch Release

purple (rear handle switch)

-

VESCM, black 52 pin plug, pin 13

Fuel Door Release

locks/­unlocks along with doors

Factory Alarm Disarm

same as factory alarm arm

- 180 ohms

Trunk Alarm Shunt

N/A

Wait to Start

N/A

Clutch Pedal

purple­/white

-

VESCM, brown 52 pin plug, pin 30

Rear Defroster

black/­green

- latched

VESCM, white 52 pin plug, pin 22

Left Front Heated Seat

(CAN and LIN bus)

Speed Sense

(wheel speed sensor)

Parking Brake

brown/­yellow

-

parking brake switch, black 2 pin plug, pin 1

Wipers

white/red

-

VESCM, white 52 pin plug, pin 23

Right Front Window (Up/Down)

see left front window

Right Rear Window (Up/Down)

see left front window

Sun Roof (Limit­/Close)

N/A

Memory Seat 2

same as memory seat 1

- resistor

Radio 12V

red/yellow

+

radio, 16 pin plug, pins 15 and 16

Radio Ignition

(Infot­ainment CAN)

Factory Amp Turn-on

(Infot­ainment CAN)

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.

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.

Center Channel (+/-)

N/A

Aux. Audio Input Left (+/-)

yellow - green

+,-

radio, 12 pin plug, pins 1 and 2

Headunit

irregular

Left Front Tweeter

1

1

left front dash

Right Front Tweeter

1

1

left front dash

Left Rear Tweeter

1

1

left rear door

Right Rear Tweeter

1

1

right rear door

Subwoofer

under rear deck