Peugeot 405. Manual - part 61

 

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Peugeot 405. Manual - part 61

 

 

d) Disconnect the battery negative lead.
e) Insulate the battery negative terminal and

the end of the battery negative lead to
prevent any possibility of contact.

f) Wait for at least ten minutes before

carrying out any further work.

Activation of air bag system

To activate the system on completion of
any work, proceed as follows.

a) Ensure that there are no occupants in the

vehicle, and that there are no loose
objects around the vacinity of the steering
wheel. Close the vehicle doors and
windows.

b) Insert the ignition key, and switch on the

ignition.

c) Reconnect the battery negative lead.
d) Switch off the ignition.
e) Switch on the ignition once more, and

check that the air bag warning light in the
steering wheel illuminates for
approximately 3 seconds and then
extinguishes.

f) Switch off the ignition.
g) If the air bag warning light does not

operate as described in paragraph e),
consult a Peugeot dealer before driving
the vehicle.

25 Air bag system 

components 
removal and refitting

4

General

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.
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

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

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

De-activate the air bag system as
described in Section 24.
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.
Remove the two air bag unit securing
screws (see illustration).
Gently pull the air bag unit from the centre
of the steering wheel.
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).

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

Body electrical system  12•21

12

25.7  Turn the steering wheel for access to

the two air bag unit screws (arrowed)

25.16  Air bag rotary connector details

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

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

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

12•22 Wiring diagrams

Wiring diagrams  12•23

12

12•24 Wiring diagrams

 

 

 

 

 

 

 

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