Part 1
WM 976623 Installing wire harness for airbag
Tools
Preliminary work
Preliminary work for wire harness for passenger's airbag unit
1. Disconnect battery. -> 271000 Work instructions after disconnecting the battery - section on "Disconnecting and connecting"
2. Remove cover of console at the left and right. -> 681419 Removing and installing centre console cover - section on "Removing" 681419 Removing and installing centre console cover
3. Remove centre console cover. -> 681919 Removing and installing centre console cover - section on "Removing" 681919 Removing and installing cover for centre console
4. Remove centre console. -> 681719 Removing and installing centre console - section on "Removing" 681719 Removing and installing centre console
5. If installed, remove control unit for tilt sensor. -> 966319 Removing and installing control unit for tilt sensor - section on "Removing" Service and Repair
6. Remove glove compartment. -> 681519 Removing and installing glove compartment - section on "Removing" 681519 Removing and installing glove compartment
Preliminary work for wire harness for left seat-belt tensioner
1. Disconnect battery. -> 271000 Work instructions after disconnecting the battery - section on "Disconnecting and connecting"
2. Remove cover of console at the left and right. -> 681419 Removing and installing centre console cover - section on "Removing" 681419 Removing and installing centre console cover
3. Remove centre console cover. -> 681919 Removing and installing centre console cover - section on "Removing" 681919 Removing and installing cover for centre console
4. Remove centre console. -> 681719 Removing and installing centre console - section on "Removing" 681719 Removing and installing centre console
5. If installed, remove control unit for tilt sensor. -> 966319 Removing and installing control unit for tilt sensor - section on "Removing" Service and Repair
6. Remove trim panel under dashboard on left. -> 701919 Removing and installing trim panel under dashboard - section on "Removing" 701919 Removing and installing trim under dashboard
7. Remove front side section trim. -> 702419 Removing and installing front side section trim - section on "Removing" 702419 Removing and installing front side section trim
8. Remove front seat. => Removing and installing front seat
9. Remove the rear side-panel lining. -> 707519 Removing and installing rear side-panel lining
10. Remove sill. -> 680519 Removing and installing inner sill
11. Remove sill support. -> 695119 Removing and installing airbag sensor - section on "Removing" 69511900 Removing and installing airbag sensor
Preliminary work for wire harness for right seat-belt tensioner
1. Disconnect battery. -> 271000 Work instructions after disconnecting the battery - section on "Disconnecting and connecting"
2. Remove cover of console at the left and right. -> 681419 Removing and installing centre console cover - section on "Removing" 681419 Removing and installing centre console cover
3. Remove centre console cover. -> 681919 Removing and installing centre console cover - section on "Removing" 681919 Removing and installing cover for centre console
4. Remove centre console. -> 681719 Removing and installing centre console - section on "Removing" 681719 Removing and installing centre console
5. If installed, remove control unit for tilt sensor. -> 966319 Removing and installing control unit for tilt sensor - section on "Removing" Service and Repair
6. Remove glove compartment. -> 681519 Removing and installing glove compartment - section on "Removing" 681519 Removing and installing glove compartment
7. Remove front side section trim. -> 702419 Removing and installing front side section trim - section on "Removing" 702419 Removing and installing front side section trim
8. Remove front seat. => Removing and installing front seat
9. Remove the rear side-panel lining. -> 707519 Removing and installing rear side-panel lining
10. Remove sill. -> 680519 Removing and installing inner sill
11. Remove sill support. -> 695119 Removing and installing airbag sensor - section on "Removing" 69511900 Removing and installing airbag sensor
Preliminary work for wire harness for left head airbag (triggering unit to A-pillar connection point)
1. Disconnect battery. -> 271000 Work instructions after disconnecting the battery - section on "Disconnecting and connecting"
2. Remove cover of console at the left and right. -> 681419 Removing and installing centre console cover - section on "Removing" 681419 Removing and installing centre console cover
3. Remove centre console cover. -> 681919 Removing and installing centre console cover - section on "Removing" 681919 Removing and installing cover for centre console
4. Remove centre console. -> 681719 Removing and installing centre console - section on "Removing" 681719 Removing and installing centre console
5. If installed, remove control unit for tilt sensor. -> 966319 Removing and installing control unit for tilt sensor - section on "Removing" Service and Repair
6. Remove trim panel under dashboard on left. -> 701919 Removing and installing trim panel under dashboard - section on "Removing" 701919 Removing and installing trim under dashboard
7. Remove front side section trim. -> 702419 Removing and installing front side section trim - section on "Removing" 702419 Removing and installing front side section trim
Preliminary work for wire harness for right head airbag (triggering unit to A-pillar connection point)
1. Disconnect battery. -> 271000 Work instructions after disconnecting the battery - section on "Disconnecting and connecting"
2. Remove cover of console at the left and right. -> 681419 Removing and installing centre console cover - section on "Removing" 681419 Removing and installing centre console cover
3. Remove centre console cover. -> 681919 Removing and installing centre console cover - section on "Removing" 681919 Removing and installing cover for centre console
4. Remove centre console. -> 681719 Removing and installing centre console - section on "Removing" 681719 Removing and installing centre console
5. If installed, remove control unit for tilt sensor. -> 966319 Removing and installing control unit for tilt sensor - section on "Removing" Service and Repair
6. Remove glove compartment. -> 681519 Removing and installing glove compartment - section on "Removing" 681519 Removing and installing glove compartment
7. Remove front side section trim. -> 702419 Removing and installing front side section trim - section on "Removing" 702419 Removing and installing front side section trim
Preliminary work for head airbag wire harness (head airbag to A-pillar connection point)
1. Remove front side section trim. -> 702419 Removing and installing front side section trim - section on "Removing" 702419 Removing and installing front side section trim
2. Remove door trim panel. -> 705919 Removing and installing door trim panel - section on "Removing" 705919 Removing and installing door panel
Tools and materials
Tools
Commercially available tool for pulling electric wires through.
Wire puller
Installing wire harness for airbag
Installing components for airbag from triggering unit to passenger's airbag unit or seat-belt pretensioner
WARNING
Danger of injury and material damage if airbag units are not handled correctly.
-> Always observe the safety regulations for handling airbag units -> 691000 Safety regulations for handling airbag and belt tensioner units
-> Remove ignition key. Disconnect battery. Route or isolate the ground strap so that all contact with a ground carrier (e.g. body, seat frame) is avoided. -> 2706IN Working instructions after disconnecting the battery
-> After the battery is disconnected, always wait for 1 minute before disconnecting the airbag plugs.
Overview of connectors for airbag wire harness, shown on the 911
1. Release connector on triggering unit for airbag -10- and fold open the locking lever. -> 695319 Removing and installing triggering unit for airbag - section on "Removing" 69531900 Removing and installing triggering unit for airbag
2. Remove connector from the relevant component.
2.1. Connectors for stage 1 and stage 2 of passenger's airbag unit -1 and 2-
Release and remove connectors for stage 1 and stage 2 of passenger's airbag unit -> 695919 Removing and installing passenger's airbag unit - section on "Removing" 69591900 Removing and installing passenger's airbag unit
2.2. Connector for seat-belt pretensioner, left -7- and right -8-
Release and remove connector on seat-belt pretensioner. -> 691119 Removing and installing front three-point belt - section on "Removing" 691119 Removing and installing front three-point belt
Remove rubber sleeves -9-.
2.3. Cut off the connector of the damaged wire harness, isolate it and secure it to the main wire harness with tie-wraps.
3. Using a small screwdriver, lever the seal out of the connector housing.
Levering out seal from connector housing
4. Cut and remove tie-wrap for fixing the wire harness to the connector housing.
Removing tie-wrap at connector housing
5. Release connector housing with a small screwdriver, lift upwards and remove from connector.
Removing connector housing from connector
6. Lift connector guide and remove from connector.
Removing connector guide from connector
Information
Allocation of lines - see wiring diagram.
7. Release contact of the damaged line using the press-out tool 1575-1P of the press-out and unlocking tools for flat and round plug connections of all sizes NR.155 ( -arrow a- ) and pull out of the contact strip.
Pressing out the contacts
8. Connect connector for the new wire harness on the relevant component until it engages securely.
8.1. Connectors for stage 1 and stage 2 of passenger's airbag unit -1 and 2-
Push on connectors for stage 1 and stage 2 of passenger's airbag unit until they engage securely. -> 695919 Removing and installing passenger's airbag unit - section on "Installing" 69591900 Removing and installing passenger's airbag unit
8.2. Connector for seat-belt pretensioner, left -7- and right -8-
Push on connector for the seat-belt pretensioner until it engages securely. -> 691119 Removing and installing front three-point belt - section on "Installing" 691119 Removing and installing front three-point belt
Fit rubber sleeve -9-.
9. Route the new wire harness along the main wire harness, guide it through existing cable ducts and tie it to the main wire harness using tie-wraps.
Securing wire harness to the main wire harness
Information
Allocation of lines - see wiring diagram.
10. Plug new line into the contact strip until the contact engages securely.
Pressing in the contacts
11. Push connector guide onto the connector until it engages securely.
Pushing connector guide onto the connector
12. Push connector housing onto the connector
12.1. Before fitting the connector housing, check for signs of damage, and replace if necessary. -> 976600 Airbag warning light activated: seal in plug connection of triggering unit defective
12.2. Push connector housing onto the connector until it engages securely.
Pushing connector housing onto the connector
13. Fasten wire harness with a new tie-wrap -arrow- to the connector housing.
Fitting tie-wrap at connector housing
14. Insert seal into the connector.
14.1. Before inserting the seal, check for signs of damage, and replace if necessary. -> 976600 Airbag warning light activated: seal in plug connection of triggering unit defective
14.2. Insert seal into the connector and press down as far as it will go. Check seal is seated properly.
Inserting seal of connector housing
15. Push on connector on triggering unit for airbag -10- until it engages securely and lock it. -> 695319 Removing and installing triggering unit for airbag - section on "Installing" 69531900 Removing and installing triggering unit for airbag
Installing wire harness for airbag from the triggering unit to the A-pillar connection point
WARNING
Danger of injury and material damage if airbag units are not handled correctly.
-> Always observe the safety regulations for handling airbag units -> 691000 Safety regulations for handling airbag and belt tensioner units
-> Remove ignition key. Disconnect battery. Route or isolate the ground strap so that all contact with a ground carrier (e.g. body, seat frame) is avoided. -> 2706IN Working instructions after disconnecting the battery
-> After the battery is disconnected, always wait for 1 minute before disconnecting the airbag plugs.