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Terminal assignment at Steering Column Electronic Systems Control Module -J527- (front)

Fig 1: Steering Column Electronic Systems Control Module (Front) Assembly Overview
GW00021560Courtesy of VOLKSWAGEN UNITED STATES, INC.

A - Cruise control system connector 

1 - Ground (GND)

2 - Hold

3 - Distance

4 -12 V power supply

5 - Mount/Tip function "Off"

6 - Acceleration/Deceleration

7 - Engaged "Off"

B - Turn signal connector 

1 - Ground (GND)

2 - Radio remote control (special vehicles)

3 - Alarm (special vehicles)

4 - Not used

5 - Headlight flasher/headlight switch

6 - Turn signal

Fig 2: Steering Column Electronic Systems Control Module (Front) Assembly Overview
GW00021560Courtesy of VOLKSWAGEN UNITED STATES, INC.

C - Connector for multi-function steering wheel/tiptronic/heated steering wheel 

7 - Push-button "-"

8 - Multi-function steering wheel "+"- power supply

9 - Multi-function steering wheel data

10 - Heat sensor/push - button "+"

11 - Multi-function steering wheel dimmer

12 - Tiptronic ground (GND)

13 - Steering wheel heating "+"

14 - Steering wheel heating "-"

D - Steering angle sensor 

1 - Light barrier 5

2 - Light barrier 3

3 - Light barrier 1

4 -12 V voltage supply

5 - 5 V voltage supply

6 - Light barrier 6

7 - Light barrier 4

8 - Light barrier 2

9 - Steering angle sensor Ground (GND)

10 - Light barrier 7

Fig 3: Steering Column Electronic Systems Control Module (Front) Assembly Overview
GW00021560Courtesy of VOLKSWAGEN UNITED STATES, INC.

E - Signal horn 

1 - Horn Ground (GND)

2 - Horn

F - Wiper system 

1 - Ground (GND)

2 - Wiper delay potentiometer

3 - Trip computer

4 - Not Used

5 - Washer

6 - Wipers