20-pin connector, designated on the diagram as T20c "A"
- 1 - Signal from light sensor 2 "G134" or light sensor photo "G107"
- 2 - High pressure sensor "G65"
- 3 - Signal from light photosensor 2 "G134" or light photosensor "G107"
- 4 - Air pollution sensor "G23S"
- 5 - CAN High Bus
- 6 - CAN Low Bus
- 9 - + 5 V for power supply of the 2 light photosensor "G134" or the light photosensor "G107"
- 10 - Driver's seat heating control unit "J131" (option)
- 11 - Front passenger seat heating control unit "J132" (option)
- 12 - Terminal 75 (optional)
- 13 - Left deflector temperature sensor "G150"
- 14 - Right deflector temperature sensor "G151"
- 16 - Connecting the positive power supply (15A) for vehicles with an additional heater
- 17 - Connecting ground for sensors
- 18 - Air conditioning compressor regulating valve "N₂80"
- 19 - Terminal 31
- 20 - Connecting the positive power supply (15A) or for vehicles with an additional heater, connecting the positive power supply (30A)
16-pin connector, designated on the diagram as T16c "B"
- 1 - +5V for power supply of actuator motors
- 2 - Potentiometer of the actuator motor of the left temperature control flap "G220"
- 3 - Potentiometer of the actuator motor of the right temperature control flap "G221"
- 4 - Potentiometer of the actuator motor of the defrost flap "G135"
- 5 - Potentiometer of the central flap actuator motor "G112"
- 7 - Actuating electric motor of supply ventilation dampers (recirculation) air intake "V425"
- 8 - Temperature sensor in the left air duct for the footwell "G261"
- 9 - Temperature sensor in the right footwell air duct "G262"
- 11 - Evaporator temperature sensor "G308" or evaporator outlet air temperature sensor "G263"
- 14 - Connecting the potentiometer to ground
16-pin connector, designated on the diagram as T16d "C"
- 1 - Left temperature control flap actuator "V158", temperature reduction
- 2 - Left temperature control flap actuator "V158", temperature increase
- 3 - Defrost flap actuator motor "V107", closed
- 4 - Defrost flap actuator motor "V107", open
- 5 - Central flap actuator motor "V70", air flow in forward direction
- 6 - Central flap actuator "V70", air flow towards feet
- 9 - Actuating electric motor of supply ventilation dampers (recirculation) air intake "V425", (recirculation / partial recirculation).
- 10 - Actuating electric motor of supply ventilation dampers (recirculation) air intake "V425", (recirculation / air intake)
- 11 - Right temperature control flap actuator "V159", temperature reduction
- 12 - Right temperature control flap actuator "V159", temperature increase
- 15 - Supply fan "V2" (pulse width modulated control signal)
- 16 - Supply fan "V2", response signal
(The information is posted on this website VWManual)
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