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Diagnostic – Failures interpretation
DF131
PRESENTDOORS BLOCKING SWITCH CIRCUIT (CPE)
CC.0: short circuit at mass
RECOMMENDATIONS Failure declared presen t when activating the doors blocking switch
Check connection and condition of connector with 40 pins EH1 of UCH
Replace connector if necessary
Check insulation and continuity on communication lines:
Pin 8A of UCH connector EH1 with 40 pins pin 5 switch CPE
Pin 17 A of UCH c onnector EH1 with 40 pins pin 1 sw itch CPE
Mass pin 3 switch CPE
Mass pin 4 switch CPE
Fix, if necessary.
Apply the recommendation
AFTER R EPARATIONRepair the other possible failures
Erase the memorized failures.
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Diagnostic - Conformity checking
Do not perform this conformity checking but after a compete
checking by means of diagnostic tester. The values displayed
in this conformity checking are only informative.
The execution condition: stopped engine, contact set on.
RECOMMENDATIONS
Par ameter or state
Checking or action
ET010: Key RF valid
ET193: RF information
r eceived
ET012: source of last
r eceived co ntrol
ET105: Last received
c ontrol Visualization and
observations
State YES when
doors locking or
unlocking is done
using a remote control a ssigned to that UCH
.
State YES when
doors blocking/
unlocking is done using the remote
control
TRF when doors
locking/unloc king is
done u sing the remote
cont rol, CP E when
locking/unloc king is
done u sing the doors
central locking switch
UNL OCKI NG LOCK ING Diagnos tic
If problems occurring: see state diagnostic ET010
If problems occurring: see state diagnostic ET193
Nothing to notice
Nothing to notice
No.
1F unction
Opening
(ctd)
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AIRBAG OPERATION
When setting the contact on, the airbag system
control indicator from the instrument pa nel is
lighted for 3 seconds then it is off.
UCE airbag is entering in a lookout state and
is considering the vehicle decelerations due to a
s ignal m easured by an integrated e lectronic
decelerometer.
In case of a stronger frontal impact, the
security electromechanical captor is tripping the
igniter of the pyrotechnic gas generator, which is
inflating the driver’s airbag. The airbag system is not releasing in case of a
s ide impact or a re ar impact.
When started, the pyrotechnic gas generator
is generating a detonation and some smoke.
IMPORTANT!
This system must be checked by means of the
CLIP tester, immediately when:
-a n accident did not caused the
movement, -the ve h icle was stolen or a stilling tentative
has been produced. -before selling a second hand vehicle.
AIRBAG INDICATOR FROM INSTRUMENT PANEL
This indicator is showing the operation state of
the driver’s airbag.
It is lighted for 3 seconds from contact setting
on, and then it is getting off and it staying like this.
If it is not on when setting the contact on or it is
on during vehicle driving, this is indicating a failure
in the system (see chapter “Diagnostic”) .
After driver’s airbag releasing, the airba g
indicator from the instrument panel is on and UCE
airbag is automatically bl oc king the driver’s airbag releasin
g line, memorizing the releasin g.
That is why, after an impact generating the
airbag re leasing, i t is necessary the UCE
airbag unblocking, then the computer blocking
in order to block all releasing.
The erasing of the memorized failures it is
possible only aft er data reading from “Im-
p act context” , then the shock sensor con-
tact is restored and the c ontrol “Computer
unblocking” may be performed.
UCE AIRBAG
DISMOUNTING – REMOUNTING
UCE airbag is mounted on the tunnel in
front of the gearbox lever. UCE air bag is provided with: -a security electromechanical captor,
-a decelerometer for airbag
- an ignition circuit of the pyrotechnic
system -an electric energy reserve,
-a diagnostic and memorizing circuit
of the detected failures, -a control circuit of the alert indicator
from instrumen t panel.
-A K-L communication interface with
the diagnostic socket.
UCE AIRBAG BLOCKING
Connect the CLIP tester to the vehicle,
the contact being set off. Set the contact on.
Block the UCE airbag: -select the menu “ Diagnostic”
- select and validate the vehicle type.
-s elect and validate the diagnostic
system “Airbag / Pre-tensioning systems”.
Airbag – Electronic control unit
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- select m
ode “Control”.
-select function “ Actuators”, then
validate “ Computer blocking ”
-s elect m enu “ State list” and ensure
that UCE airbag has been blocked.
The state “B l oc ke d computer” is
becoming ACTIVE. When this function is activated, all relea sing
lines are i nhibited, the airbag indicator from
instrument panel is lighted (new UCE airbag
are delivered with blocked releasing lines).
W ait 2 seconds until releasin g UCE airbag
lines are inhibited.
AT T E N T I ON!
In case of an i nt e r vention on the
vehicle (on exhaust, carriage body, etc),
block the UCE airbag by means of the
CL IP t e st er, wai t for 2 se c onds aft e r
s etting t he contact off (necessary time for
automatic di scharge of the UCE airbag),
then you may use hammers or shock
generating de vice on central floor. After sale , a ny electric accessory
(speakers, anti-theft system or any de vice
which may be generating magnetic field,
is not to be mounted near UCE airbag.
UCE AIR BAG DISMOUNTING
Set the contact off. Disconnect the battery
(-) terminal. Dismount the central console.
Dismount the UCE airbag connector.
Dismount the UCE airbag attachment screws
(1).
UCE AIRBAG REMOUNTING
Attach UCE airbag on the vehicle, the arrow
from the UCE airbag being oriented towards the
vehicle front (required tightening moment 0.8 ±
0.2 daNm ).
Reconnect the UCE airbag connector.
M ount the centra l console. Connect the
battery (-) terminal.
Set the contact on.
Check the system operation by means of the
CLIP tester and set the system according to the
vehicle equipping level “With driver’s airbag”.
If everything is correct, unblock UCE airbag. If
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it is not c orrect, see c hapter “
Diagnostic”.
AIRBAG SYSTEM CONFIGURATION
Because the vehicle is e quipped only the
driver’s airbag, it i s necessary the UCE airbag
configuration only “with driver’s airbag”.
In case UCE airbag configuration does not
match with the vehicle equipping, the airbag
indicator will remain lighted.
-S elect menu “ Diagnostic”
- Select and validate vehicle type.
-S elect and validate diagnostic system
“Airbag/ Pre-tensioning systems” - Select mode “ Control”.
-S elect function “ Programmi ng” then
configure the computer only “ With driver’s
airbag ”.
-S et the contact off then reset t he contact
on for in order to validate the configuration.
In the case of the UCE airbag configuration, the
airbag indicator from the instrument panel is
remaining lighted because new UCE airbag are
delivered in blocked state. -S elect mode “ Control”, select mode “
Configuratio ns reading” or select m enu
“States list” and e nsure that modification ha s
been taken into consideration.
AT T E N T I ON!
N on-observing of these prescriptions may
ge ne rat e an abnorm a l ope rat i on of t he
sy stem, even undesirable releasing of the
airbag. UCE airbag may accept up to maximum
4 ai rbag re leasing (c ert ai n e lements are
loosing their nominal characteristics). It is
n ot necessary the systematic replacement
after each airbag releasing.
UCE AIRBAG UNBLOCKING
Af ter replacing UCE airbag it is necessary
the re leasing lines unblocking. The same
method as for the UCE airbag blocking is to
be used, by validation c ontrol “ Computer
unblocking”. The airbag indicator from the
instrument panel is getting off.
REMARK:
The 30 pins connecto r of the UCE
airbag has a shunt circuit that is short-
circuiting the different transmitting
lines of the releasing signal when this
one is disconnected, avoiding the
undesirable releasing of this system (by
antenna effect, for instance)
REMARK:
UCE airbag supply and the
pyrotechnic gas generator is performed
by means of the vehicle bat tery. UCE
airbag is disposing of a reserve electric
energy enabling nevertheless the airbag
r eleasing even if, at the be ginning of a
shock, the v ehicle battery i s not anymore
supplying the UCE airbag.
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REMARK : By means of the CL IP
tester it is possible the visualization of
the releasing of the driver’s ai rbag.
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 everyt hing is correct, unblock the
UC E air bag and the system is again
operational (the airbag indicator is getting off).
If t he CL IP t est er i s sti pul ati ng the
replacement of UCE airbag, that means:
- UCE airbag has released 4 times the airbag.
-An internal failure of UCE airbag.
UCE AIRBAG CONNECTOR
Pin Denomination 1Free
2Free
3Free
4Free
5+ after contact
6 Mass
7 Airbag indicator
8Free
9 “K” diagnostic line
10 + driver airbag signal
11 – driver airbag signal
12 Free
13 Free
14 Free
15 Free
16 ,17 Shunt
18 ,19 Shunt
20 Mass
21 ,22 Shunt
23 “L” diagnostic line
24 Free
25 ,26 Shunt
27 Free
28 ,29 Shunt
30 Free
REMARK:
U CE airbag conn ector has as
par t i c ul ari t y the short c i rc ui t se t ting of
diffe rent 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).
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C
HECKING 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 a nd not repaired.
The security device can not tolerate a ny classical reparation intervention of this wiring or of
the connectors.
AT T E N T I ON !
When repositioning the new wiring, ensure that t his one is not in contact with sharpen
edges which m ay destroy it.
REMARK:
The airbag electric wires t est i s to be performed as follows: - Set the c ontact off
- Connect the CLIP tester to the vehicle
- Set t he contact on
- Block UCE airbag
- Set the c ontact 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
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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 a n
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
settin g the contact on.
A vehicle equipped with driver’s airbag is
to be i dentifi ed by the inscription “Airbag”
from the steering wheel central pillow.
DISMOUNTIN G
AT T E N T ION!
It is forbidden the pyrotechnic system
handling near heating sources or open
fire because of risk of the s ystem
undesirable releasing.
OBSERVAT ION
Before dism ounting the airbag pillow,
bloc the UCE airbag by means of the CLIP
tester (see “Blocking UCE airbag”. When
this function i s active, al l t ransmitting lines
of the releasing signal are inhibited. The
airbag indicator from the instrument panel
is on.
IMP ORTANT:
Before di smounting the steering wheel, i t
is necessary the di sconnecting of t he airbag
connector (1). OBSERVAT ION
The driver’s airbag pillow is provided with
a connector that is short-circui ting after
disconne ctin g the wiring conn ector,
avoiding in this way all undesi rable
r eleasing.
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.
IMP ORTANT:
After airbag pillow replacement
considered discard bu t not tripped, its
destroying procedure is to be imposed (see
chapter “Destroying procedure”).
R EMOU NT I NG
Check if th e airba g indicator fro m the
instrument panel is on with the contact set on. Conne c t the i ne rt i gni ter t o the airba g
connector (t o wiring) and check if the airbag
indicator is off. Set th e contact off, connect the airba g
connector instead of the inert igniter (check the
correct connection of the connector).
Driver’s airbag
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