Removing

Unscrew and remove the screws holding the RDK control unit. Remove control unit with plug from holder, release the plug by applying pressure to the retaining clip and pull it off the control unit.

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Connections at RDK control unit plug

1

Data line to

20

Data line to diagnosis (K)

instrument cluster Plug 2 PIN 10

21

not in use

2

Data line to

22

to alternator, terminal 61

instrument cluster

23

not in use

Plug 2 PIN 11

24

not in use

3

RDK warning light

25

not in use

4

not in use

26

Speed sensor, RL

5

not in use

27

not in use

6

not in use

28

Speed sensor, FR

7

not in use

29

Speed sensor, FL

8

Speed sensor HR

30

not in use

9

not in use

31

not in use

10

not in use

32

not in use

11

not in use

33

Power supply, terminal 15

12

not in use

34

HF transmitter, FL

13

Ground

35

HF transmitter, RR

14

not in use

15

not in use

16

not in use

17

HF transmitter, FR

18

HF transmitter, RL

19

Data line to diagnosis (L)

Use 1 or 2 auxiliary cables (own construction) for measurements on the control unit connectors and plug connections with the same contacts (flat contacts). This will prevent the contacts becoming deformed.

There are several combined plug connections of the same type in the lines for brake-pad wear, speed sensors and HF sensors. The lines in this area can be distinguished from one another as follows:

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