Removing and installing airbag unit on front passenger side (Multivan) — VW

Removing and installing airbag unit on front passenger side (Multivan)
Special tools and workshop equipment required
Torque wrench
V.A.G 1331
Removing
WARNING
Safety regulations must be observed when working with pyrotechnic components
Chapter
.
Observe the regulations relating to the storage, transportation and disposal of airbag, belt tensioner and battery isolator units (pyrotechnic components)
Chapter
.
Note assignment of airbag unit to dash panel
Electronic Parts Catalogue
.
Disconnect battery earth cable with ignition switched on
Electrical system
Rep. gr.
27
Connecting and disconnecting battery
.
Remove right dash panel side trim
Chapter
.
Remove bottle holder
Chapter
.
Remove glove compartment
Chapter
.
Remove right middle knee padding
Chapter
.
Remove right dash panel trim
Chapter
.
WARNING
Before handling pyrotechnic components (e.g. separating the electrical connector), the person handling them must
“electrically discharge”
himself/herself. To do this e.g. briefly touch the door striker plate.
Disconnect connector on front passenger airbag
1
.
To do this, unscrew securing bolts
2
for front passenger airbag.
Slide front passenger airbag approx. 5 mm forwards, lower slightly and pull it out off the dash panel.
WARNING
Set down airbag with impact cushion facing upwards.
Installing
Check whether an additional earth cable needs to be fitted in the vehicle.
WARNING
If a front passenger airbag is renewed, an additional earth cable may have to be fitted to the vehicle.
Safety regulations must be observed when working with pyrotechnic components
Chapter
.
Observe the regulations relating to the storage, transportation and disposal of airbag, belt tensioner and battery isolator units (pyrotechnic components)
Chapter
.
Note assignment of airbag unit to dash panel
Electronic Parts Catalogue
.
Note
Check whether an earth cable is attached to the front passenger airbag housing:
Front passenger airbag with earth wire:
On front passenger airbag with earth cable
1
, wiring harness
2
is three-conductor. An additional line
4
is also secured to stud
3
.
Front passenger airbag without earth wire:
On front passenger airbag without earth cable
5
, wiring harness
6
is two-conductor. No additional line is secured to stud
7
.
Route an additional earth cable in the vehicle if the front passenger airbag does not have an earth cable.
Note
The earth cable is not included in the scope of delivery of the front passenger airbag unit.
To fit the earth wire, use
Set of individual wires
000 979 137
.
If needed, extend the earth wire with the appropriate materials from wiring harness repair set
VAS 1978
or
Wiring harness repair set
VAS 1978A
.
Fold floor covering in right A-pillar footwell to side when routing additional earth cable.
Secure end of earth cable
2
to stud
1
on right retaining bracket of front passenger airbag using an additional hexagon nut
4
.
Note
Ensure that the additional earth cable is fitted and secure on the factory-fitted stud
1
.
The factory-fitted safety threaded fitting may not be loosened.
Route the earth cable
2
properly up to the right side of the front passenger footwell.
Connect the other end of the earth cable to the earth bolt
5
.
Install in reverse order, but note the following:
WARNING
Battery must be connected with ignition switched on. If pyrotechnic components (e.g. airbag, seat belt tensioners) are repaired incorrectly, undesired triggering may occur after the battery is connected. Ensure that nobody is in vehicle when connecting battery.
Connect battery earth cable with ignition switched on
Electrical system
Rep. gr.
27
Connecting and disconnecting battery
.
Finally, read and clear event memory of airbag control unit since faults may be stored as a result of disconnecting electrical connectors
Vehicle diagnostic tester
.
Specified torques
Component
Specified torque
Bolts for front passenger airbag
20 Nm + 1/4 turn (90°) further
Hexagon nut for earth cable
9.0 Nm