Peugeot 405 Manual

Air bag system components - removal and refitting
Body electrical system / Air bag system components - removal and refitting


Warning: Refer to the precautions given in Section 24 before attempting to carry out work on any of the air bag components.

General
1 The air bag sensors are integral with the electronic control unit, which is itself integral with the steering wheel. The air bag warning light is integral with the air bag unit.

2 Any suspected faults with the air bag system should be referred to a Peugeot dealer - under no circumstances attempt to carry out any work other than removal and refitting of the air bag unit and/or the rotary connector, as described in the following paragraphs.

Air bag electronic control unit 3 The unit is integral with the steering wheel, and cannot be removed independently. Refer to Chapter 10 for steering wheel removal.

Air bag unit
Removal
4 The air bag unit is an integral part of the steering wheel centre boss.

5 De-activate the air bag system as described in Section 24.

6 Move the steering wheel as necessary for access to the two air bag unit securing screws. The screws are located at the rear of the steering wheel boss.

7 Remove the two air bag unit securing screws (see illustration).

25.7 Turn the steering wheel for access to the two air bag unit screws
25.7 Turn the steering wheel for access to the two air bag unit screws (arrowed)

8 Gently pull the air bag unit from the centre of the steering wheel.

9 Carefully unclip the wiring connector from the air bag unit (use the fingers only, and pull the connector upward from the air bag unit).

10 If the air bag unit is to be stored for any length of time, refer to the storage precautions given in Section 24.

Refitting
11 Refitting is a reversal of removal, bearing in mind the following points.

a) Do not strike the air bag unit, or expose it to impacts during refitting.

b) Tighten the air bag unit securing screws to the specified torque.

c) On completion of refitting, activate the air bag system as described in Section 24.

Air bag rotary connector Removal
12 Remove the air bag unit, as described previously in this Section.

13 Remove the steering wheel as described in Chapter 10.

14 Remove the securing screws, and withdraw the lower steering column shroud.

Allow the shroud to hang down, there is not need to disconnect the wiring from the components mounted inside the shroud.

15 Lift off the upper column shroud.

16 Disconnect the electrical supply connector from the rotary connector (see illustration).

25.16 Air bag rotary connector details
25.16 Air bag rotary connector details

1 Rotary connector
2 Electrical supply connector 3 Rotary connector securing clips

17 Carefully release the three securing clips using a screwdriver, then withdraw the rotary connector.

Warning: Do not pull out the electrical supply connector when removing the rotary connector.

Refitting
18 Refitting is a reversal of removal, bearing in mind the following points.

19 Before refitting the steering column shrouds and the air bag unit, check that the wiring harness is routed correctly by moving the steering wheel to check that the wiring is not trapped.

20 Refit the steering wheel (see Chapter 10).

21 Refit the air bag as described previously in this Section, but do not activate the air bag at this stage.

22 On completion, move the steering column to its fully raised position, then check that the clearance between the rear face of the steering wheel and the front faces of the steering column shrouds is 8.0 mm. If the clearance is not as specified, proceed as follows.

a) Working in the driver’s footwell, unclip the carpet trim panel from under the facia for access to the steering column pinch-bolt.

b) Loosen the pinch-bolt, then slide the steering shaft as necessary to give the specified clearance between the steering wheel and the shrouds.

c) Tighten the pinch-bolt, and refit the trim panel.

23 Activate the air bag system as described in Section 24.


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