Part 3
WM 970919 Removing and installing main wire harness
Removing main wire harness in passenger compartment
Overview of main wire harness for dashboard
Overview of connectors for main wire harness in passenger compartment
1. Disconnect plug connections for main wire harness to rear wire harness -33 and 34-.
Disconnect plug connections for main wire harness to rear wire harness.
1.1. Release plug connections for main wire harness to rear wire harness -arrows A- and disconnect.
2. Disconnect plug connections for main wire harness to engine wire harness -35 and 36-.
Disconnecting plug connections for main wire harness to engine wire harness
2.1. Release plug connections for main wire harness to engine wire harness -arrows A- and disconnect -arrows B-.
2.2. Release sockets for main wire harness -arrows C- and push down from relay carrier -arrows D-.
3. Release connector for rear vertical sensor -37- and pull it off.
4. Release and pull off connector on DME control module -38 and 39-. -> 247019 Removing and installing DME control module - section on "Removing" Service and Repair
5. Loosen ground point in luggage compartment -40-.
Loosening ground point
5.1. Screw off fastening nut and remove ground strap.
6. Release and pull off connector on rear angle sensor for headlight beam adjustment -41-. -> 947919 Angle sensor for rear headlight levelling system - section on "Removing" 94791900 Removing and installing rear angle sensor for headlight levelling system
7. Remove rubber sleeves -42-.
8. Disconnect main wire harness plug connections for rear lid wire harness -47 and 48-.
Disconnecting main wire harness plug connections for rear lid wire harness
8.1. Release main wire harness plug connections for rear lid wire harness -arrows A- and -arrows B- disconnect.
8.2. Release connector sockets for main wire harness -arrows C- and push down from retaining clip -arrows D-.
8.3. Unclip tie-wrap -arrow E-.
9. Disconnect PASM plug connections -49 and 50- at left and right.
Disconnecting PASM plug connection
9.1. Release and disconnect plug connection for wheel sensor at left and right -arrow a-.
10. Release and pull off connector on rear antenna for tyre pressure monitoring system -51 and 52- at left and right. -> 443819 Removing and installing antenna for tyre pressure monitoring system - section on "Removing" 44381900 Removing and installing tyre pressure monitoring system antenna
11. Disconnect and expose ABS wire harness rear on left and right -53 and 54-. -> 976555 Replacing ABS wire harness - section on "Removing" 976555 Replacing wire harness for anti-lock brake system (ABS)
11.1. Release and disconnect plug connection for wheel sensor at left and right.
11.2. Unscrew fastening screw of connector socket.
11.3. Release rear wire harness.
12. Unclip the main wire harness in the area of the rear left spring strut.
Unclipping the main wire harness in the area of the rear left spring strut
13. Pull off connector on front seat-belt tensioner -56 and 57- at left and right. -> 691319 Removing and installing front three-point seat belt with tensioner - section on "Removing" Testing and Inspection Testing and Inspection
14. Unclip main wire harness to the left side wall.
Unclipping main wire harness to the left side wall
14.1. Unclip main wire harness to the left side wall -arrow A-.
14.2. Unclip cable duct to the left side wall -arrow B-.
15. Loosen cable duct to the left side wall.
Loosening cable duct to the left side wall
15.1. Unclip main wire harness to the bottom of the B-pillar -arrow A-.
15.2. Take out cable duct upwards out of the rear wall plate -arrow B-.
16. Release and pull off connector for airbag sensor, centre left and right -58 and 59-. -> 695119 Removing and installing airbag sensor - section on "Removing" 69511900 Removing and installing airbag sensor
17. Release and pull off connector for ParkAssist control unit -60 and 61-. -> 917419 Removing and installing ParkAssist control unit - section on "Removing" Service and Repair
18. Release and pull off connector for rear end convenience systems control unit -62 to 64-. -> 578919 Removing and installing control unit for rear end convenience systems - section on "Removing". Service and Repair
19. Loosen ground point under the driver's seat -65-.
Loosening ground point
19.1. Screw off fastening nut and remove ground straps.
20. Unclip ground point under driver's seat.
Unclipping ground point under driver's seat
21. Release and remove connectors for telephone control unit -66 to 69-. -> 919019 Removing and installing control unit for telephone - section on "Removing" 91901900 Removing and installing control unit for telephone
21.1. Unclip wire harness for telephone control unit.
Unclipping wire harness for telephone control unit
22. Loosen ground point under the passenger's seat -70-.
Loosening ground point
22.1. Screw off fastening nut and remove ground straps.
23. Unclip wire harness at door sill.
Unclipping wire harness at door sill
24. Disconnect the plug connection between main wire harness and wire harness for door, left and right -75 and 76-. -> 973219 Removing and installing wire harness for door - section on "Disconnecting" 97321900 Removing and installing wire harness for door
25. Release and pull off connector for gateway control unit -81-. -> 903519 Removing and installing gateway control unit - section on "Removing" 903519 Removing and installing gateway control unit
26. Release and pull off connectors for KESSY/PAS control unit -82 and 83-. -> 966619 Removing and installing KESSY control unit - section on "Removing" Service and Repair
27. Release and pull off connector for stop light switch -84-. -> 943619 Removing and installing stop light switch - section on "Removing". Service and Repair
28. Release and pull off connector for pedal sensor -85-.
29. Loosen ground point under the unit carrier -92-.
Loosening ground point
29.1. Screw off fastening nut and remove ground straps.
30. Release and pull off connector for tilt sensor control unit -93-. -> 966319 Tilt sensor control unit - section on "Removing" Service and Repair
31. Disconnect plug connections between main wire harness and wire harness for heater/air-conditioning unit -95 and 96-.
Releasing electric plug connection
31.1. Release lower plug connection on heater/air-conditioning unit -arrows a- and unplug.
31.2. Release upper plug connection on heater/air-conditioning unit -arrows a- and unplug.
Releasing plug connection
31.3. Cut tie-wraps (main wire harness to heater/air-conditioning unit wire harness) with side cutters. Remove main wire harness.
Cutting tie-wraps
32. Release and disconnect plug connection for rain sensor -99-. -> 921219 Removing and installing rain sensor - section on "Removing" Service and Repair
33. Disconnect plug connection of make-up mirror, left and right -100 and 101-.
Disconnecting plug connection of make-up mirror
33.1. Unclip plug connection from console -arrow B-.
33.2. Release plug connection -arrow a- and disconnect it -arrows C-.
34. Unclip cable duct at front of roof frame.
Unclipping cable duct at front of roof frame
35. Unclip main wire harness at front of roof frame.
Unclipping main wire harness at front of roof frame
36. Remove main wire harness from A-pillar -area A-.
Removing main wire harness from A-pillar
37. Pull off connector for antenna amplifier, left and right -102 to 106-. -> 918419 Removing and installing antenna amplifier - section on "Removing" Service and Repair
38. Loosen ground points on dashboard bracket.
Loosening ground points on dashboard bracket
38.1. Unscrew fastening nuts and remove ground straps.
39. Unclip length compensation at the steering column.
Unclipping length compensation
39.1. Remove expansion rivet and length compensation.
40. Unclip cable guide on dashboard bracket.
Unclipping cable guide
41. Loosen holder for relay carrier.
Loosening holder for relay carrier
41.1. Unscrew the two fastening screws and remove the relay carrier holder from the dashboard bracket.
42. Loosen main wire harness at left dashboard bracket.
Loosening main wire harness at left dashboard bracket
42.1. Screw off fastening nut and remove fastening screw.
42.2. Unclip main wire harness on cable guide.
43. Loosen main wire harness at right dashboard bracket.
Loosening main wire harness at right dashboard bracket
43.1. Unclip main wire harness on both cable guides.
44. Loosen main wire harness at centre dashboard bracket.
Loosening main wire harness at centre dashboard bracket
44.1. Undo the four tie-wraps and remove main wire harness.
Installing main wire harness
Installing main wire harness in passenger compartment
Overview of main wire harness for dashboard
Overview of connectors for main wire harness in passenger compartment
1. Fasten main wire harness at centre dashboard bracket.
Fastening main wire harness at centre dashboard bracket
1.1. Lay main wire harness and fasten with four new tie-wraps.
2. Fasten main wire harness at right dashboard bracket.
Fastening main wire harness at right dashboard bracket
2.1. Clip in main wire harness on both cable guides.
3. Fasten main wire harness at left dashboard bracket.
Fastening main wire harness at left dashboard bracket
3.1. Clip in main wire harness on cable guide.
3.2. Insert fastening screw and tighten fastening nut. => Tightening torque: 3.5 Nm (2.5 ftlb.)
4. Fasten holder for relay carrier.
Fastening holder for relay carrier
4.1. Position holder for relay carrier and tighten with the two fastening screws to the dashboard bracket. => Tightening torque: 3.5 Nm (2.5 ftlb.)
5. Clip in cable guide on dashboard bracket.
Clipping in cable guide
6. Clip in length compensation at the steering column.
Clipping in length compensation
6.1. Position length compensation at the steering column and fasten with the expansion rivet.
7. Fasten ground points on dashboard bracket.
Fastening ground points on dashboard bracket
7.1. Fit ground straps and tighten with fastening nuts. => Tightening torque: 9 Nm (6.5 ftlb.)
8. Push on connector for antenna amplifier, left and right -103 to 107-. -> 918419 Removing and installing antenna amplifier - section on "Installing" Service and Repair
9. Remove protective film of adhesive strip on main wire harness -area A- and affix main wire harness to A-pillar.
Affixing main wire harness to A-pillar
10. Clip in main wire harness at front of roof frame.
Clipping in main wire harness at front of roof frame
11. Clip in cable duct at front of roof frame.
Clipping in cable duct at front of roof frame
12. Connect plug connection of make-up mirror, left and right -101 and 102-.
Connecting plug connection of make-up mirror
12.1. Push together plug connection -arrows A- until it is felt to engage.
12.2. Clip plug connection into console -arrow B-.
13. Push together plug connection -100- until it is felt to engage. -> 921219 Removing and installing rain sensor - section on "Installing" Service and Repair
14. Connect plug connections between main wire harness and wire harness for heater/air-conditioning unit -94 and 95-.
Fastening electric line
14.1. Lay main wire harness to heater/air-conditioning unit wire harness and fix with a tie-wrap.
14.2. Push in upper electric plug connection at heater/air-conditioning unit until it is felt to engage.
Connecting upper electrical plug connection
14.3. Push in lower electric plug connection at heater/air-conditioning unit until it is felt to engage.
Connecting lower electrical plug connection
15. Push on connector for tilt sensor control unit -92- until it is felt to engage. -> 966319 Tilt sensor control unit - section on "Removing" Service and Repair
16. Fasten ground point under the unit carrier -91-.
Securing ground point
16.1. Connect ground straps and screw down fastening nut. => Tightening torque: 9 Nm (6.5 ftlb.)
17. Push on connector for pedal sensor -85- until it is felt to engage. -> 207819 Removing and installing pedal sensor - section on "Installing"
18. Push on connector for stop light switch -84- until it is felt to engage. -> 943619 Removing and installing stop light switch - section on "Installing". Service and Repair
19. Push on connectors of KESSY/PAS control unit -82 and 83- until they are felt to engage. -> 966619 Removing and installing KESSY control unit - section on "Installing" Service and Repair
20. Push on connector of Gateway control unit -81- until it is felt to engage. -> 903519 Removing and installing gateway control unit - section on "Installing" 903519 Removing and installing gateway control unit
21. Push the plug connection together between main wire harness and wire harness for door, left and right -75 and 76-. -> 973219 Removing and installing wire harness for door - section on "Locking" 97321900 Removing and installing wire harness for door
22. Clip in wire harness at door sill.
Clipping in wire harness at door sill
23. Fasten ground point under the passenger seat -70-.
Securing ground point
23.1. Connect ground straps and screw down fastening nut. => Tightening torque: 9 Nm (6.5 ftlb.)
24. Push on connectors for telephone control unit -66 to 69- until they are felt to engage. -> 919019 Removing and installing control unit for telephone - section on "Installing" 91901900 Removing and installing control unit for telephone
24.1. Clip in wire harness for telephone control unit.
Clipping in wire harness for telephone control unit
25. Clip in wire harness under driver's seat.
Clipping in wire harness under driver's seat
26. Fasten ground point under the driver's seat -65-.
Securing ground point
26.1. Connect ground straps and screw down fastening nut. => Tightening torque: 9 Nm (6.5 ftlb.)
27. Push on connectors for rear end convenience systems control unit -62 to 64- until they are felt to engage. -> 578919 Removing and installing control unit for rear end convenience systems - section on "Installing". Service and Repair
28. Push on connectors for ParkAssist control unit -60 and 61- until they are felt to engage. -> 917419 Removing and installing ParkAssist control unit - section on "Installing" Service and Repair
29. Push on connectors for airbag sensor, centre left and right -58 and 59- until it is felt to engage. -> 695119 Removing and installing airbag sensor - section on "Installing" 69511900 Removing and installing airbag sensor
30. Fasten cable duct to the left side wall.
Fastening cable duct to the left side wall
30.1. Insert cable duct downward in the rear wall plate -arrow A-
30.2. Clip in cable duct to the bottom of the B-pillar -arrow B-.
31. Clip in main wire harness to the left side wall.
Clipping in main wire harness to the left side wall
31.1. Clip in cable duct to the left side wall.
31.2. Clip in main wire harness to the left side wall.
32. Plug in connector on front seat-belt tensioner -56 and 57- at left and right. -> 691319 Removing and installing front three-point seat belt with tensioner - section on "Installing" Testing and Inspection Testing and Inspection
33. Push on connector for convertible top mechanism -54- until it is felt to engage.
34. Push the plug connection for the rear window heating -53- together until it is felt to engage.
35. Clip in the main wire harness in the area of the rear left spring strut.
Clipping in the main wire harness in the area of the rear left spring strut
36. Lay and connect ABS wire harness, front left and right -50 and 51-. -> 976555 Replacing ABS wire harness - section on "Installing" 976555 Replacing wire harness for anti-lock brake system (ABS)
36.1. Laying ABS wire harness
36.2. Tighten fastening screw of connector socket. => Tightening torque: 10 Nm (7.5 ftlb.)
36.3. Lock the plug connection securely.
37. Push on connectors of front antenna for Tyre Pressure Monitoring -48 and 49- at left and right until they are felt to engage. -> 443819 Removing and installing antenna for TPM - section on "Installing" 44381900 Removing and installing tyre pressure monitoring system antenna
38. Push connector onto motor for convertible-top compartment lid drive -47- , until it is felt to engage.
39. Connect PASM plug connections -45 and 46- at left and right.
Connecting PASM plug connections at left and right
39.1. Press wire harness to motor for convertible-top compartment lid drive into the holder -arrow C-.
39.2. Position both holders on the actuating cable and close -arrow A-.
39.3. Push plug connections for PASM together on left and right -arrows B- , until these are felt to engage and press in both holders -arrow C-.
40. Clip in main wire harness in rear luggage compartment.
Clipping in main wire harness in rear luggage compartment
41. Fit rubber sleeves -43-.
42. Push connector onto rear angle sensor for headlight beam adjustment -42- until it is felt to engage. -> 947919 Angle sensor for rear headlight levelling system - section on "Installing" 94791900 Removing and installing rear angle sensor for headlight levelling system
43. Fasten ground point in rear luggage compartment -40-.
Securing ground point
43.1. Fit ground strap and secure with fastening nut. => Tightening torque: 9 Nm (6.5 ftlb.)
44. Push on connector of DME control module -38 and 39- until it is felt to engage. -> 247019 Removing and installing DME control module - section on "Installing" Service and Repair
45. Push on connector of rear vertical sensor -37- until it is felt to engage.
46. Push main wire harness plug connections for motor wire harness -35 and 36-.
Pushing main wire harness plug connections for motor wire harness
46.1. Push sockets for main wire harness onto relay carrier -arrows A- , until these are felt to engage.
46.2. Push plug connections for main wire harness to motor wire harness together -arrows B- , until these are felt to engage.
47. Push together plug connections for main wire harness to rear wire harness -33 and 34- and lock them, until these are felt to engage.
Pushing main wire harness plug connections together for rear wire harness