Pin Assignment, CLIMATRONIC Control Unit

Special tools and workshop equipment required

Test Box -V.A.G 1598/42-
Test Adapter -V.A.G 1598/47-
Template -1598/47-2-

Fig 1: Identifying 20-Pin Harness Connector -A-, T20c

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

20-pin Harness Connector -A-, in Wiring Diagram T20c

1 - Sunlight photo sensor 2 -G134- or Sunlight photo sensor - G107-, signal

2 -

3 - Sunlight photo sensor 2 -G134- or Sunlight photo sensor - G107-, signal

5 - High speed CAN Bus

6 - Low speed CAN Bus

9 - + 5V for Sunlight photo sensor 2 -G134- or Sunlight photo sensor -G107-

10 - Heated driver seat adjuster -E94- (optional)

11 - Heated front passenger seat adjuster -E95- (optional)

12 - Terminal 75 (optional)

13 - Left vent temperature sensor -G150- (from January 2004)

14 - Right vent temperature sensor -G151- (from January 2004)

16 - Terminal 30a/ terminal 15

17 - Signal Ground (GND) for Sunlight photo sensor -G107-, Sunlight photo sensor 2 -G134-, Left vent temperature sensor - G150- and Right vent temperature sensor -G151-.

18 - A/C compressor regulator valve -N280-

19 - Terminal 31

20 - Terminal 30a/ terminal 15

Fig 2: Identifying 16-Pin Harness Connector -B-, T16c

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

16-pin Connector, -B-, In Wiring Diagram T16c9 - + 5V for Sunlight photo sensor 2 -G134- or Sunlight photo sensor -G107-

1 - + 5V for motors

2 - Left temperature door potentiometer/actuator -G220-

3 - Right temperature door potentiometer/actuator -G221-

4 - Defroster door motor position sensor -G135-

5 - Front air distribution door motor position sensor -G642-

6 - Recirculation door motor position sensor -G143- (through December 2003) temperature regulator door motor position sensor -G92- (from January 2004)

7 - Back pressure door motor position sensor -G113-

8 - Left footwell vent temperature sensor -G261-

9 - Right footwell vent temperature sensor -G262-

10 - Fresh air intake duct temperature sensor -G89- (through September 2005)

11 - Evaporator temperature sensor -G308- or Evaporator vent temperature sensor -G263-

14 - Signal Ground (GND) potentiometer

15 - Left vent temperature sensor -G150- (through December 2003)

16 - Right vent temperature sensor -G151- (through December 2003)

Fig 3: Identifying 16-Pin Harness Connector -C-, T16d

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

16-pin Connector, -C-, In Wiring Diagram T16d

1 - Left temperature door motor -V158-, cold

2 - Left temperature door motor -V158-, warm

3 - Defroster door motor -V107-, closed

4 - Defroster door motor -V107-, open

5 - Front air distribution door motor -V426-, upper body outlet

6 - Front air distribution door motor -V426-, footwell

7 - Fresh/recirculation air door motor -V154- air recirculation activation (through December 2003) air recirculation door motor - V113- (from January 2004); motor function deleted (from June 2007) by the fresh air/recirculating air/back pressure door motor -V425- and mount.

8 - Fresh/recirculation air door motor -V154- fresh air activation (through December 2003) air recirculation door motor -V113- (from January 2004)

9 - Airflow door motor -V71-, open (through May 2007)

10 - Airflow door motor -V71-, closed (until May 2007)

11 - Right temperature door motor -V159-, cold-

12 - Right temperature door motor -V159-, warm

15 - Fresh air blower control module -J126-

16 - Control module for fresh air blower -J126-, signal