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Dacia Solenza (engine E7J). Manual - part 169

WIRING

88 - 5

REMARK : By means of the CLIP

tester it is possible the visualization of
the releasing of the driver’s airbag.

If the airbag has been tripped:

- replace the releasing elements and the

defective ones;

- check the failures absence by means

of the CLIP tester;

- check the necessity of UCE airbag

replacement.

When everything is correct, unblock the
UCE airbag and the system is again
operational (the airbag indicator is getting off).
If the CLIP tester is stipulating the
replacement of UCE airbag, that means:

- UCE airbag has released 4 times the

airbag.

- An internal failure of UCE airbag.
UCE AIRBAG CONNECTOR

Denomination

Free

+ after contact

Mass

Airbag indicator

Free

“K” diagnostic line

+ driver airbag signal

– driver airbag signal

Free

16 ,17

Shunt

18 ,19

Shunt

Mass

21 ,22

Shunt

“L” diagnostic line

Free

25 ,26

Shunt

Free

28 ,29

Shunt

Free

REMARK:
UCE airbag connector has as

par ticularity the shortcircuit setting of
different releasing lines when this one is
disconnected. The shunts placed in front of
each releasin g line are avoiding the
undesirable releasing of these systems (by
antenna effect, for instance).

Airbag – Electronic control unit

WIRING

88 - 6

CHECKING OF THE AIRBAG SYSTEM CIRCUITS.

The transmitting wiring of the airbag-releasing signal is integrated in the front wiring.
In case of an abnormality noticed on the transmitting wiring of the airbag-starting signal, this

is to be replaced and not repaired.

The security device can not tolerate any classical reparation intervention of this wiring or of

the connectors.

ATTENTION !
When repositioning the new wiring, ensure that this one is not in contact with sharpen

edges which may destroy it.

REMARK:

The airbag electric wires test is to be performed as follows:

- Set the contact off
- Connect the CLIP tester to the vehicle
- Set the contact on
- Block UCE airbag
- Set the contact off
- Disconnect the battery (-) terminal
- Dismount the central console
- Dismount the airbag attachment screws.
- Disconnect the airbag connector
- Connect the inert igniter.
- Disconnect the UCE airbag connector and connect the 30 pins adapter connector instead

of UCE airbag and the 30 pins adapter exit cables are to be connected, one by one to the CLIP

Airbag – Electronic control unit

WIRING

88 - 7

tester.

The driver’s airbag is located in the steering

wheel pillow.

The driver’s airbag is composed of:

- an inflatable pillow
- a pyrotechnic gas generator with an

igniter.

These elements can not be separated.
REMARK:
When the airbag is released, the

steering wheel cover is broken.

The airbag indicator from the instrument

panel is controlling the good operation of the
driver’s airbag.

REMARK:
The system is operational only after

setting the contact on.

A vehicle equipped with driver’s airbag is

to be identified by the inscription “Airbag”
from the steering wheel central pillow.

DISMOUNTING

ATTENTION!
It is forbidden the pyrotechnic system

handling near heating sources or open
fire because of risk of the s ystem
undesirable releasing.

OBSERVATION
Before dismounting the airbag pillow,

bloc the UCE airbag by means of the CLIP
tester (see “Blocking UCE airbag”. When
this function is active, all transmitting lines
of the releasing signal are inhibited. The
airbag indicator from the instrument panel
is on.

IMPORTANT:

Before dismounting the steering wheel, it
is necessary the disconnecting of the airbag
connector (1).

OBSERVATION

The driver’s airbag pillow is provided with
a connector that is short-circuiting after
disconne cting th e wir ing c onnector,
avoiding in this way all u ndesi rable
releasing.

REMARK:

After releasing, UCE airbag is
automatically blocking all releasing lines.

DISMOUNTING

OF THE DRIVER’S AIRBAG

Set the contact off
Dismount the two attachment screws located

under steering wheel, attaching the airbag pillow.

Disconnect the airbag connector.

IMPORTANT:
After airbag pillow replacement

considered discard but not tripped, its
destroying procedure is to be imposed (see
chapter “Destroying procedure”).

REMOUNTING

Check if the airbag indicator from the

instrument panel is on with the contact set on.

Connect the inert igniter to the airbag

connector (to wiring) and check if the airbag
indicator is off.

Set the contact off, connect the airbag

connector instead of the inert igniter (check the
correct connection of the connector).

Driver’s airbag

WIRING

88 - 8

Mount the two attachment screws (required tightening moment: 0.65 daNm) located under

the steering wheel, attaching the airbag pillow.

IMPORTANT
After remounting, check the system operation, by means of the CLIP tester. If

everything is correct, unblock UCE airbag (see “Unblocking UCE airbag”). If it is not
correct, see chapter “Diagnostic. Check if the airbag indicator is lighted when setting
contact on, it is remaining lighted for 3 seconds, then it is turning off and is remaining
off.

OBSERVATION:
UCE airbag may accept up to 4 airbag releasing (some elements are loosing their

nominal characteristics). It is not necessary the systematic replacement after each airbag
releasing.

REMARK :

The driver airbag – new item number- is provided with a self-adhesive protective foil
stacked over the airbag connector. Unstacking of the protection foil is to be done
ONLY in the moment of mounting.

Driver’s airbag

Content .. 167 168 169 170 ..