Connector Views

Climatronic A/C System with Automatic Control

• Pressing the button AUTO will reverse all settings which deviate from the automatic operation.

• Deviations from automatic operation => respective operating instructions.

• If the ECON button is activated, the compressor is set to almost no delivery.

• When the ECON button is deactivated, the A/C compressor is switched on. The specific ambient conditions or activation signals must be present. The heating and ventilation operation continues to be controlled electronically.

• The ECON button is deleted. It is replaced by the AC button. The ON/OFF button is deleted. Replaced by the OFF button.

• When the AC button is activated, the A/C compressor is switched on. The specific ambient conditions or activation signals must be present. The heating and ventilation operation continues to be controlled electronically.

• If the AC button is deactivated, the compressor is set to almost no delivery. The specific ambient conditions or activation signals must be present. The heating and ventilation operation continues to be controlled electronically.

• When the ON/OFF button is activated, the Climatronic works.

• When the ON/OFF button is deactivated, the Climatronic is not working. There is no heating or ventilation.

• OFF button activated. Climatronic is switched off. There is no heating or ventilation.

• OFF button deactivated. Climatronic is switched on.

• If there is a malfunction in the system, first check DTC memory. Vehicle Diagnosis, Testing & info. System (VAS 5051B) (or succeeding model) in "Guided Fault Finding".

Rear Climatronic Control Module Connector Pin Assignment, from 05.25.08

Special tools, testers and auxiliary items required

• Test box (V.A.G 1598/42)

• Adapter cable (V.A.G 1598/47)

• Template (V.A.G 1598/47-2)

20-pin harness connector, connector housing - A -, in wiring diagram T20c





1 Sunlight Photo Sensor 2 ( G134) or Sunlight Photo Sensor (G107), signal
2 High Pressure Sensor (G65 )
3 Sunlight Photo Sensor 2 ( G134) or Sunlight Photo Sensor (G107), signal
4 Air Quality Sensor (G238 )
5 CAN High
6 CAN Low
7 Indirect Ventilation Door Control Motor (V213)
8 Indirect Ventilation Door Control Motor (V213)
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)
14 Right Vent Temperature Sensor (G151)
15 Indirect Ventilation Door Motor Position Sensor (G330)
16 Terminal 30a/without auxiliary heater terminal 15
17 Signal ground for Sunlight Photo Sensor (3241) (G107), Sunlight Photo Sensor 2 (G134), Left Vent Temperature Sensor ( G150), Right Vent Temperature Sensor (G151) and Indirect Ventilation Door Motor (V213)
18 A/C Compressor Regulator Valve (N280)
19 Terminal 31
20 Terminal 30A/without auxiliary heater terminal 15

16-pin harness connector, connector housing - B -, in wiring diagram T16i





1 + 5V for control 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)
7 Fresh Air/Recirculating Air/Back Pressure Door Motor Position Sensor (G644).
8 Left Footwell Vent Temperature Sensor (G261)
9 Right Footwell Vent Temperature Sensor (G262)
11 Evaporator vent temperature sensor (G263) or Evaporator Temperature Sensor (G308)
14 Signal Ground (GND) potentiometer

16-pin harness connector, connector housing - C -, in wiring diagram T16h





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 Recirculation Door Motor ( V113)
8 Recirculation Door Motor ( V113)
9 Fresh Air/Recirculating Air/Back Pressure Door Motor (V425), open
10 Fresh Air/Recirculating Air/Back Pressure Door Motor (V425), closed
11 Right Temperature Door Motor (V159), cold
12 Right Temperature Door Motor (V159), warm
15 Fresh Air Blower Control Module (J126)
16 Fresh Air Blower Control Module (J126), signal