20-pin connector, marked on the diagram as T20s -A-
- 1 - Signal from photo light sensor 2 -G134- or photo light sensor -G107-
- 2 - High pressure sender -G65-
- 3 - Signal from photo light sensor 2 -G134- or photo light sensor -G107-
- 4 - Air pollution sensor -G23S-
- 5 - CAN High bus
- 6 - CAN low bus
- 9 - + 5 V for supplying light sensor 2 -G134- or photo light sensor -G107-
- 10 - Driver seat heating control unit -J131- (option)
- 11 - Front passenger seat heating control unit -J132- (option)
- 12 - Terminal 75 (option)
- 13 - Left vent temperature sender -G150-
- 14 - Right vent temperature sender -G151-
- 16 - Connecting the power plus (15a) for vehicles with auxiliary heater
- 17 - Earth connection for sensors
- 18 - Air conditioner compressor control valve -N280-
- 19 - Terminal 31
- 20 - Connecting the power plus (15a) or on vehicles with an additional heater the positive connection (30a)
16-pin connector, marked on the diagram as T16s -B-
- 1 - +5V for power supply of executive electric motors
- 2 - Potentiometer for left temperature flap control motor -G220-
- 3 - Potentiometer for right temperature flap control motor -G221-
- 4 - Potentiometer for defroster flap control motor -G135-
- 5 - Potentiometer for central flap control motor -G112-
- 7 - Actuator motor of fresh air dampers (recycling) air intake -V425-
- 8 - Temperature sensor in left leg air duct -G261-
- 9 - Temperature sensor for right footwell air duct -G262-
- 11 - Evaporator temperature sender -G308- or evaporator outlet air temperature sender -G263-
- 14 - Connecting the potentiometer to ground
16-pin connector, marked on the diagram as T16d -C-
- 1 - Left temperature flap control motor -V158-, temperature reduction
- 2 - Left temperature flap control motor -V158-, temperature increase
- 3 - Defroster flap control motor -V107-, closed
- 4 - Defroster flap control motor -V107-, open
- 5 - Central flap control motor -V70-, forward air flow
- 6 - Central flap control motor -V70-, airflow towards feet
- 9 - Actuator motor of fresh air dampers (recycling) air intake -V425-, (recycling / partial recycling).
- 10 - Actuator motor of fresh air dampers (recycling) air intake -V425-, (recirculation / air intake)
- 11 - Right temperature flap control motor -V159-, temperature reduction
- 12 - Right temperature flap control motor -V159-, temperature increase
- 15 - Fresh air blower -V2- (pulse-width modulated control signal)
- 16 - Supply fan -V2-, return signal
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