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 20-pin Harness Connector, T20b

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 16-pin Harness Connector, T16j

Courtesy of VOLKSWAGEN UNITED STATES, INC.

1 - Temperature Regulator Door Motor -V68-, warm

2 - Evaporator Temperature Sensor -G308-

3 - Air distribution flap motor position sensor -G645-

4 - Footwell Outlet Temperature Sensor -G192-

5 - Temperature Regulator Door Motor Position Sensor -G92-

7 - + 5V for Temperature Regulator Flap Motor Position Sensor -G92- and Air Distribution Flap Motor Position Sensor -G645-

8 - Ground for the Footwell Vent Temperature Sensor -G192-, Front Air Distribution Door Motor Position Sensor -G92-, Evaporator Temperature Sensor -G308- and Air Distribution Door Motor Position Sensor -G645-

9 - Fresh/Recirculating Air Door Motor -V154-, open

10 - Fresh/Recirculating Air Door Motor -V154-, closed

11 - Temperature Regulator Door Motor -V68-, cold

12 - Air distribution flap motor -V428-, open

13 - Air distribution flap motor -V428-, closed

5-pin Harness Connector T5r 

Fig 3: Identifying 5-pin Harness Connector T5r

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