88
WIRING
88 - 16
Diagnostic – Failure interpretation
DF003 DRIVER’S AIRBAG CIRCUIT
PRESENT CC : shortcircuit CO : open circuit
CC.1 : shortcircuit at + 12 volts
CC.0 : shortcircuit at mass
RECOMMENDATIONSCharacteristics: the measurement of the airbag releasing line is to be
performed only by means of the CLIP tester.
Use 30 pins adapter B40 for the intervention at the l evel of the
computer connector
CO - CC
RECOMMENDATIONSNothing to notice
Set t he contact on, then block the computer by means of the CLIP t ester (see “Blocking UCE
airbag”)
Set the contact off and dismount the two attachment screws of the airbag on the steering wheel.
Check the correct connection of the airbag.
Disconnect the airbag then connect the inert igniter instead of it.
S et the contact on and perform a checking by means of the CLIP tester.
Replace the airbag if the state “present failure” is becoming “memorized failure”
Turn the contact off ; conect then reconect the connector of the rotating contact of under steering
wheel control.
Only CLIP tester is to be used for measuring the resistance in point C2 of the airbag circuit.
If the resulted value is not correct, replace t he control under steering wheel.
Reconnect the rotating contact of the control under steering wheel, disconnect the computer
connector and connect in its place the 30 pins adapter B40.
Only CLIP tester is to be used for measuring the resistance of the driver’s airbag releasing line,
using cable A of the 30 pins adapter.
If the resulted value is not correct, check the correct connection of the 30 pins adapter (pins 10
and 11) and replace the front wiring if necessary.
If after performing these checking no failure has been noticed, check the presence of the 5 pegs
for shunt unblocking, at the 30 pins connector of UCE airbag. Check the condition of the 30
ways connector of the airbag wiring (the connector blocking system…).
AFT ER Connect UCE airbag and driver’s airbag then set the contact on.
INT ERVENT ION Erase by means of the CLIP tester the failures memorized by UCE
airbag, then turn the
contact off.
Pe rform again a checking by means of the CLIP tester ; in case of
failure absence, unblock the computer.
Destroy the airbag pillow, if you are replacing it (see “Destroying
procedure”)
vnx.su
88
WIRING
88 - 17
Diagnostic – Failure interpretation
DF003
PRESENT
CONTINUATION
CC.1 – CC.0
RECOMMENDATIONS Nothing to notice
Block the computer by means of the CLIP t ester (see “Blocking UCE a irbag”)
Set the contact off and dismount the two attachment screws of the airbag on the steering wheel.
Check the condition of the airbag releasing lines.
Only CLIP tester is to be used for measuring the isolation in point C2 of the airbag circuit (using
cable A of the 30 pins adapter).
If value resulted is not correct, replace the control under steering wheel.
Reconnect the rotating contact of the control under steering wheel, disconnect the computer
connector and connect in its place the 30 pins adapter B40.
Only CLIP tester is to be used for measuring the resistance of the driver’s airbag releasing line,
using cable A of the 30 pins adapter.
If value resulted is not correct, check the 30 pins connector (pins 10 and 11) and replace the
front wiring if necessary. AFT ER Connect UCE airbag and driver’s airbag then set the contact on.
INT ERVENT ION Erase by means of the CLIP tester the failures memorized by UCE
airbag, then turn the contact off.
Perform again a checking by means of the CLIP tester; in case of failure
absence, unblock the computer.
Destroy the airbag pillow, if you are replacing it (see “Destroying
procedure”)
vnx.su
