Climatronic Control Module J255 Harness Connectors

Climatronic Control Module J255 Harness Connectors

Special tools, testers and auxiliary items required

• Test Box (Basic Unit) (V.A.G 1598/14)

• Adapter (V.A.G 1598/11)






8-pin Harness Connector - A -T8n

1 Terminal 30
2 Terminal 31
3 Not assigned
4 Not assigned
5 Connected terminal 30 for control motors (bridge to C1, D2, D3)
6 Control motor ground
7 Not assigned
8 Coolant pump output (optional)

12-pin Harness Connector - B -T12b

1 Coolant pump relay (high side)
2 Coolant pump ground
3 Not assigned
4 High Pressure Sensor (G65)
5 Not assigned
6 Not assigned
7 Coolant shut-off valve (N82) closed +
8 Coolant shut-off valve (N82) open +
9 Windshield defogger (Z2) relay (high side)
10 Windshield defogger (Z2) relay ground
11 Not assigned
12 Not assigned

20-pin Harness Connector - C -T20d

1 Connected terminal 30 for control motors (parallel to D2, D3 and A5)
2 CAN bus high
3 CAN bus low
4 LIN 2 (LIN for vehicle electrical system)
5 Control motor ground
6 Not assigned
7 Not assigned
8 Not assigned
9 +5V Sunlight photo sensor (G107) (bridge to D14, C18)
10 Signal ground for Left front upper body vent temperature sensor (G385) , Right front upper body vent temperature sensor (G386) and Sunlight photo sensor (G107)
11 Sunlight photo sensor (G107) left
12 Sunlight photo sensor (G107) right
13 Not assigned
14 Right front upper body vent temperature sensor (G386) (bridge to D8)
15 Not assigned
16 Not assigned
17 Not assigned
18 +5V Sunlight photo sensor (G107) (bridge to D14, C9)
19 Left front upper body vent temperature sensor (G385) (bridge to D9)
20 Not assigned

16-pin Harness Connector - D -T16k

1 LIN 1
2 Connected terminal 30 for control motors (bridge to C1, D3, A5)
3 Connected terminal 30 for control motors (bridge to C1, D3, A5)
4 Control motor ground
5 Control motor ground
6 LIN 2 (LIN for vehicle electrical system, bridge to C4)
7 Evaporator Temperature Sensor (G308)
8 Right front upper body vent temperature sensor (G386) (bridge to C14)
9 Left front upper body vent temperature sensor (G385) (bridge to C19)
10 Right Footwell Vent Temperature Sensor (G262)
11 Left footwell vent temperature sensor (G261)
12 Not assigned
13 Signal ground for Left footwell vent temperature sensor (G261) , Right footwell vent temperature sensor (G262) and Evaporator temperature sensor (G308)
14 +5V Sunlight photo sensor (G107) (bridge to C9, C18)
15 Not assigned
16 Not assigned