Removing
WM 970919 Removing and installing main wiring harness - floor area and right-hand side
Removing main wiring harness - floor area and right-hand side
General information
Information
- The repair instructions document "Main wire harness" is divided into several chapters because of its size.
- For body repairs, refer to the specific chapters on installing and removing individual sections of wiring.
CAUTION
-> The main wire harness contains all airbag lines, antenna lines and optical waveguides.
-> The main wire harness must therefore not be cut for major repair work and must be replaced complete.
-> If individual lines are damaged, isolate them (disconnect, remove plug contacts from plug connections etc.) and replace the original wire harness by installing new lines.
Removing main wiring harness - floor area and right-hand side
Disconnect the battery -> 90 Work instructions after disconnecting the battery.
Remove Kessy antenna on rear impact member -> 966719 Removing and installing Kessy antenna - section on "Removing" 966719 Removing and Installing Kessy Antenna.
Remove right rear light.-> 943119 Removing and installing rear light - section on "Removing" Service and Repair
Remove TV tuner -> 911719 Removing and installing TV tuner - section on "Removing" Service and Repair.
Remove control unit for level adjustment -> 431619 Removing and installing control unit for level adjustment - section on "Removing" 43161900 Removing and Installing Level Control Module.
Remove control unit for trailer hitch -> 669619 Removing and installing control unit for trailer hitch - section on "Removing" 669619 Removing and installing control unit for trailer hitch.
Remove CD changer -> 916019 Removing and installing CD changer - section on "Removing" Service and Repair.
Remove loudspeaker amplifier -> 914419 Removing and installing loudspeaker amplifier - section on "Removing" Service and Repair.
Remove tilt sensor control unit -> 966319 Removing and installing tilt sensor control unit - section on "Removing" Service and Repair.
Remove rear seat -> 724819 Removing and installing rear seat - section on "Removing".
Remove right B-pillar trim panel -> 706719 Removing and installing B-pillar trim panel - section on "Removing" 706719 Removing and installing B-pillar trim panel.
Remove front right side-section trim panel-> 702419 Removing and installing front side-section trim panel - section on "Removing" 702419 Removing and installing front side section trim.
Remove floor carpeting from the work area.
Remove right rear wheel housing liner. -> 536919 Removing and installing rear wheel housing liner - section on "Removing" Service and Repair.
1. Lift vehicle -> 40 Lifting the vehicle.
Only for vehicles with tyre pressure monitoring system.
2. Release connector of antenna for tyre pressure monitoring system (rear wheel housing) -Arrow A- and disconnect it -Arrow B-
3. Loosen the five fastening screws on the carbon canister (tank) and the two on the degassing tank in the right wheel housing -arrows-.
Information
- In USA vehicles, the rubber hose -1- of the leak diagnosis pump is extremely tight. If the hose is pulled, the filler neck can break off at the leak diagnosis pump.
4. Release connector on carbon canister -2- and on leak diagnosis pump (USA) -3- and disconnect.
5. Fix carbon canister and degassing tank to the bracket with the fastening screws, but do not tighten.
6. Unclip plug connection (rear wheel housing) -Arrow A-.
7. Release connector -Arrow B- and disconnect plug connection -Arrows C-.
Only in vehicles with Bi-Xenon headlights
8. Release connector on sensor for headlight levelling system (rear wheel suspension) -Arrow A- and remove -Arrow B-.
Only in cars with additional heating
9. Release connector on metering pump (transmission tunnel) -Arrows A- and unclip -Arrow B-.
10. Remove line on corrugated hose holder from threaded bolt -Arrow C-.
11. Release connectors for LOW range -1- , centre-differential lock -2- and oil level sensor -3- at transfer box -Arrows A- and remove -Arrows B-.
12. Release connectors on transmission -Arrows A- and pull them off -Arrows B-.
13. Cut tie-wrap -C-.
14. Remove line -a- and (only in cars with additional heating) -b- on corrugated hose holders (transmission tunnel) from threaded bolts -Arrows A-.
15. Press out the rubber sleeve to the inside -Arrow B-.
Only for vehicles with level adjustment.
16. Remove right centre cover -> 519319 Removing and installing centre cover - section on "Removing" 519319 Removing and Installing Centre Cover.
17. Release the two connectors (underbody right) -Arrows A- and remove them -Arrows B-.
18. Unclip line -Arrow C- and press rubber sleeve up and out -Arrow D-.
19. Lower the vehicle.
20. Press down lock on connector (head airbag) -Arrow A- and maintain in this position.
21. Release connector -Arrow B- and pull off -Arrow C-.
22. Unclip line -Arrow D-.
23. Release connector on lateral acceleration sensor (luggage compartment right) -Arrow A- and disconnect plug connection -Arrows B-.
24. Unclip line -Arrow C-.
25. Press out rubber sleeve and remove line to carbon canister and to leak diagnosis pump -Arrow D-.
26. Remove connector -Arrows A- (D-pillar lower right) and unclip connector bracket -Arrows B-.
27. Unscrew fastening nut -1- and remove ground straps together with twist lock -a- -Arrow C-.
28. Remove line from threaded bolt -Arrow D-.
29. Disconnect both connectors (green & blue) at rear of roof rack -Arrow A- and unclip line -Arrow B-.
30. Unclip line (along rear of side window) -Arrows A- and remove downwards -Arrow B-.
31. Release connector (filler-flap lock) -Arrows A- and disconnect -Arrow B-.
32. Release connector on KESSY antenna (under rear seat) -Arrows A- and remove -Arrows B-.
33. Loosen styrofoam elements -Arrows C- and remove line -Arrow D-.
34. Press down protective cover on connector (C-pillar) -Arrow A- and maintain in this position.
35. Release connector -Arrow B- and pull off -Arrow C-.
36. Cut tie-wrap -D-.
37. Remove airbag sensor on C-pillar -> 695119 Removing and installing airbag sensor - section on "Removing" 695119 Removing and installing airbag sensor.
38. Unscrew fastening nut -1- (rear wheel housing) and remove ground straps together with twist lock -a- -Arrow A-.
39. Remove wiring duct from threaded bolt and wheel housing seam -Arrows B-.
40. Release connector -Arrow A- (rear seat support) and remove from clip -Arrow B-.
41. Unclip line -Arrow C- and remove corrugated hose holder from threaded bolt -Arrow D-.
42. Open clip -Arrow E- and remove line -Arrow F-.
43. Unscrew fastening screws -5- and remove rear seat support -Arrow G-.
44. Unclip line (under rear seat) -Arrow A- and remove corrugated hose holder from threaded bolt -Arrow B-.
45. Remove right rear belt lock -> 692519 Removing and installing rear belt lock - section on "Removing" 692519 Removing and installing rear belt lock
46. Remove cap under right rear seat -> 201021 Removing fuel tank - section on "Removing" Service and Repair.
47. Release connector on fuel-level sensor -Arrow A- and pull it off -Arrow B-.
48. Remove line to fuel-level sensor together with rubber sleeve -Arrow C-.
Only for vehicles with level adjustment.
49. Open wiring duct -Arrow A- and remove air tubes -Arrow B-.
50. Remove line with wiring duct from threaded bolts -Arrows C-.
51. Unplug connector on airbag sensor at B-pillar -> 695119 Removing and installing airbag sensor 695119 Removing and installing airbag sensor.
Only for vehicles with electric adjustment fitting.
52. Press down protective cover on connector (B-pillar) -Arrow A- and maintain in this position.
53. Release connector -Arrow B- and pull off -Arrow C-.
54. Unscrew fastening nut -1- and remove ground straps together with twist lock -a- -Arrow D-.
55. Unclip line -arrows- (lower B-pillar).
A- & B-pillar
56. Release wire sleeve with a small screwdriver -Arrows A- and press away to the rear -Arrow B-.
57. Release connector for door wire harness -Arrows C- and pull off -Arrow D- connector.
A- & B-pillar
58. Release socket bracket -Arrows A- and remove -Arrow B-.
B-pillar only
59. Release sockets -Arrows C- and pull out to the rear -Arrows D-. Then pull line out of B-pillar.
A-pillar
60. Unscrew fastening nut -1- and remove ground straps together with twist lock -a- -Arrow A-.
61. Pull line out of A-pillar -Arrow B-.
62. Release plug (under right front seat) -Arrows A- and disconnect it from the tyre filling connection -Arrow B-.
63. Unscrew fastening nut -1- (under right front seat) and remove ground straps together with twist lock -a- -Arrow A-.
64. Remove line from threaded bolt -Arrow B-.
65. Remove wiring duct (rear door floor area) from threaded bolts -Arrows A-.
66. Cut the tie-wraps -B-.
Remove main wire harness - dashboard area and centre console -> 970919 Removing and installing main wire harness - section on "Removing" 970919 Removing and Installing Main Wiring Harness 970919 Removing and Installing Main Wiring Harness.