Climatic Heating And A/C System Controls Multi-Pin Harness Connector

Special tools and workshop equipment 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, T20b

Fig 1: Identifying 5-Pin Electrical Connection T5, 16-Pin Electrical Connection, In Wiring Diagram T16E And 20-Pin Electrical Connection T20C

Courtesy of VOLKSWAGEN UNITED STATES, INC.

3 - Center Outlet Temperature Sensor -G191-

5 - High Pressure Sensor -G65-

7 - CAN bus low

8 - CAN bus high

12 - Right seat heater (optional)

13 - Left seat heater (optional)

15 - Terminal 75 seat heater (optional)

16 - A/C Compressor Regulator Valve -N280-

18 - Center Outlet Temperature Sensor -G191-

19 - Terminal 30A

20 - Terminal 31

16-pin Harness Connector, T16j

Fig 2: Identifying 5-Pin Electrical Connection -T5-, 16-Pin Electrical Connection, In Wiring Diagram T16E And 20-Pin Electrical Connection -T20C-

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1 - Temperature Regulator Door Motor -V68-, warm

2 - Evaporator Temperature Sensor -G308-

4 - Footwell Outlet Temperature Sensor -G192-

5 - Left Temperature Door Potentiometer/Actuator -G220-

7 - + 5 V for Left Temperature Regulator Door Motor Position Sensor -G220-

8 - Ground for the Footwell Vent Temperature Sensor -G192-, the Evaporator Temperature Sensor -G308- and the Left Temperature Door Potentiometer/Actuator -G220-

9 - Recirculation Door Motor -V113-, open

10 - Recirculation Door Motor -V113-, close

11 - Temperature Regulator Door Motor -V68-, cold

5-pin Harness Connector T5r

Fig 3: Identifying 5-Pin Electrical Connection -T5-, 16-Pin Electrical Connection, In Wiring Diagram T16E And 20-Pin Electrical Connection -T20C-

Courtesy of VOLKSWAGEN UNITED STATES, INC.

1 - 3rd blower speed

2 - 2nd blower speed

3 - 1st Blower speed

4 - 4th blower speed

5 - Terminal X