Connector Assignment, Heating/Air Conditioning Control

Connector assignment, heating/air conditioning control







Connector A (black)
1 - K-line
2 - Free
3 - Free
4 - Free
5 - Terminal 58 d
6 - Free
7 - Outside temperature sensor
8 - Free
9 - Free
10 - Interior temperature sensor
11 - Free
12 - Ground for sensors and potentiometers

Connector B (red)
1 - Free
2 - Free
3 - Free
4 - Free
5 - Footwell blower outlet sensor
6 - Free
7 - Free
8 - Temperature mixing valve position
9 - Central valve position
10 - Footwell / defrost valve position
11 - Free
12 - Free
13 - Interface, instrument cluster
14 - Free
15 - Free
16 - Free
17 - Position of outside air / recirculation valve
18 - Sun sensor
19 - Free
20 - Free

Connector C (beige)
1 - Free
2 - Feedback signal, compressor
3 - Free
4 - Free
5 - Free
6 - Free
7 - Terminal 58
8 - Output + 5 Volt
9 - Free
10 - Free
11 - Feedback signal, fresh-air fan minus
12 - Free
13 - Free
14 - Feedback signal, fresh-air fan plus
15 - Free
16 - Activation of fresh-air fan (driver)

Connector D (black)
1 - Free
2 - Temperature mixing valve motor
3 - Footwell / defrost valve motor
4 - Central valve motor
5 - Outside air / recirculation valve motor
6 - Air conditioning compressor On demand
7 - Free
8 - Free
9 - Terminal 15
10 - Temperature mixing valve motor
11 - Footwell / defrost valve motor
12 - Central valve motor
13 - Outside air / recirculation valve motor
14 - Free
15 - Terminal 31
16 - Free