1st Version - up to 3/87

Removal:





1. Turn ignition key to position "0", disconnect battery negative terminal and cover.
2. Remove front left-hand cover under dashboard.
3. Remove glove compartment.
4. Disconnect red 10-pin plug connection (arrow) at bracket of foot-operated parking brake.





5. Pull off control knobs for blower and air distribution switch.





6. Unscrew nuts on control unit (width across flats 24 mm).





7. Remove ash tray in center console, unscrew bolts of ash tray housing and remove housing.
8. Press out cover on control unit and remove downwards while pulling off the electrical connections on the back.





9. Loosen bolts on retaining plate for control units.





10. Press air distribution switch (right) toward the right and blower switch (left) upwards out of retaining plate.





11. Pull retaining plate slightly backwards and unclip temperature selector wheels.
12. Remove retaining plate.





13. Pull off electrical connections and vacuum lines on blower switch and remove switch.
14. Remove radio.





15. Unscrew mounting bolts of triggering unit with special tool.
16. Remove instrument ciuster.

17. Open cable straps at connection cable of triggering unit:





- in range of radio cutout.





- behind glove compartment.





- behind instrument cluster.





- below dashboard outside left

18. Pull out connection cable and remove triggering unit through opening above ash tray on center console.

Installation:





19. Tighten bolts of control unit (tightening torque 10 Nm).

CAUTION: The arrow on the control unit must point in the direction of travel.





20. Connect red 10-pin plug connection (arrow) to cable harness.
21. Connect battery, turn ignition key to position "1" and test system by means of the RS warning lamp.
22. Turn ignition key to position "0". Disconnect battery negative terminal and cover.
23. Disconnect red 10-pin plug connection (arrow).





a Red line
b Red-green line

24. Connect electrical connections and vacuum lines to blower switch.
25. Route connection cable and fasten with cable straps.





26. Insert air distribution switch (right) to the left and blower switch (left) downwards into the retaining plate.





27. Insert retaining plate at the mounting bolts and align so that the distance between the outer edge of the opening in the center console and the outer edge on the bores for the control switches is 15 mm.

NOTE: The cover can be used as an auxiliary dimension line.





28. Screw mounting bolts on retaining plate.
29. Test system with tester, see "Test Instructions for Tester...", which is contained within the article at "Test Program, Air Bag and Belt Tensioner (up to 09/87) and Air Bag 1/3, Tests". [1][2]Component Tests and General Diagnostics
30. Continue installation in the reverse sequence.
31. Check system with RS warning lamp.