df193 RENAULT TWINGO 2009 2.G Electrical Equipment - Airbags And Pretensioners Workshop Manual

88C-17
MR-413-X44-88C000$308.mif
V3
MRSZ AIRBAG
Vdiag: 04AIRBAGS AND PRETENSIONERS
Fault finding - Function88C
By default, when the key is in the inhibition position, the following protections and signals are inhibited in the event of
a crash:
–Passenger front air bag.
–Passenger chest-level airbag, if fitted.
The passenger front airbag and passenger chest-level airbag are inhibited when the locking switch is
positioned on OFF or when DF028 "PASSENGER AIRBAG STATUS INDICATOR LIGHT CIRCUIT" or DF193
"PASSENGER AIRBAG LOCKING STATUS CHANGE" is present in the computer memory.
–Seat belt locking monitoring:
This function is carried out by the instrument panel (seat belt reminder indicator light and buzzer). The MRSZ
computer only sends the driver's seat belt buckle sensor status.
An instrument panel warning light indicates that the seat belt is not being worn by the driver and a beep sounds as a
reminder when the vehicle speed exceeds 12 mph (20 km/h).
–Monitoring the information displayed on the instrument panel:
The instrument panel controls the correct operation of the "Airbag fault" and "Airbag OFF" warning lights and
informs the airbag computer, via the multiplex network, of any possible malfunctions in the warning light circuits.

88C-21
MR-413-X44-88C000$539.mif
V3
88C
AIRBAGS AND PRETENSIONERS
Fault finding - Fault summary table
Tool faultAssociated
DTCDiagnostic tool title
DF0019080 Computer
DF0029042 Computer feed voltage
DF0039007 Driver's frontal airbag circuit
DF0049005 Passenger's front airbag circuit
DF0289041 Passenger airbag status warning light circuit
DF034907E Computer locked
DF0399035 Driver's side sensor circuit
DF0409036 Passenger's side sensor circuit
DF0609050 Multiplex network
DF068900C Passenger's chest front side airbag circuit
DF069900A Passenger side curtain airbag circuit
DF0709009 Driver's side curtain airbag circuit.
DF077900B Driver's front side chest airbag circuit
DF0919034 Airbag locking switch circuit
DF1659040 Airbag fault warning light circuit
DF1839012 Driver's side front buckle pretensioner circuit
DF1849013 Passenger side front buckle pretensioner circuit
DF193907C Passenger airbag locking status change.
DF194907F Computer to be replaced following impact
DF2329051 Driver's seat belt buckle sensor circuit
DF242907B Left-hand/right-hand drive configuration
DF2629050 Vehicle speed multiplex signal
DF2639050 No ABS/ESP multiplex signal
DF2649050 No instrument panel multiplex signal
MR-413-X44-88C000$539.mif
MRSZ AIRBAG
Vdiag: 04

88C-54
MR-413-X44-88C000$616.mif
V3
AIRBAGS AND PRETENSIONERS
Fault finding - Interpretation of faults
MRSZ AIRBAG
Vdiag: 04
88C
DF193
PRESENT
OR
STOREDPASSENGER AIRBAG LOCKING CHANGE OF STATUS
NOTESSpecial notes:
The vehicle user is able to inhibit or reactivate the passenger airbag using the switch,
+ after ignition feed off, or 10 seconds after the + after ignition feed is
switched on.
Clear the computer fault memory using the command RZ001 "Fault memory".
Switch off the ignition, and wait a few seconds.
Set the locking switch to the desired setting.
Switch the ignition back on and check that the fault is gone.
AFTER REPAIRClear the computer fault memory using command RZ001 "Fault memory". Switch
the ignition of f and then on again.
Repeat the check using the diagnostic tool and, if there are no faults (ignore DF034
Computer locked), unlock the computer using command VP007 Unlock computer
ABGMRSZ_V04_DF193

88C-61
MR-413-X44-88C000$693.mif
V3
88C
AIRBAGS AND PRETENSIONERS
Fault finding - Conformity check
MAIN COMPUTER STATUSES AND PARAMETERS
NOTESOnly check the conformity after a complete check with the diagnostic tool. The
values shown in this conformity check are given as a guide.
Application conditions: Engine stopped, ignition on.
FunctionParameter or Status
checked or ActionDisplay and
notesFault finding
Main
computer
Statuses and
ParametersET073:Computer locked
by toolYES or NO
This status indicates whether or not
the computer is locked.In the event of a fault, apply the
interpretation for DF034
"Computer locked".
ET143:Passenger
airbag(s) lockedYES or NO
This status indicates the locking of
the passenger trigger lines
(passenger front airbag, passenger
chest-level airbag).In the event of a fault, apply the
interpretation of DF193
"Passenger airbag locking
status change".
ET076:Computer to be
replacedYES or NO
This status indicates whether the
computer should be replaced or not.In the event of a fault, apply the
interpretation of DF001
"Computer" and DF194
"Computer to be replaced
following impact".
ET010: Impact detectedYES or NO
This status indicates whether an
impact has been detected by the
computer.In the event of a fault, apply the
interpretation of DF194 "Computer
to be replaced following impact".
ET074:Fault warning
light activatedYES or NO
This status permits a check on the
request by the computer for the
"airbag fault" indicator light to be lit
or not.In the event of a fault, apply the
interpretation of DF165 "Airbag
fault warning light circuit".
ET072:Passenger airbag
status indicator
light commandedYES or NO
This status permits a check on the
request by the computer for the
"passenger airbag" indicator light
to be lit.In the event of a fault, apply the
interpretation of DF028
"Passenger airbag status
indicator light circuit".
PR001:Computer feed
voltageThis parameter indicates the
computer voltage.
The voltage should
be between:
9 V < X < 14 VIn the event of a fault, apply the
interpretation for DF038
"Computer".
ET169:Driver's seat belt
contactOPEN - CLOSED - FAULTY
This status is used to check whether
the driver buckle switch is working
properly.In the event of a fault, apply the
interpretation of DF232 "Driver's
seat belt buckle sensor circuit".
ABGMRSZ_V04_CCONF
MR-413-X44-88C000$693.mif
MRSZ AIRBAG
Vdiag: 04

88C-63
MR-413-X44-88C000$693.mif
V3
MRSZ AIRBAG
Vdiag: 04AIRBAGS AND PRETENSIONERS
Fault finding - Conformity check88C
FUNCTION: AIRBAG
SUB-FUNCTION: LOCK AIRBAGS
NOTESOnly check the conformity after a complete check with the diagnostic tool. The
values shown in this conformity check are given as a guide.
Application conditions: Engine stopped, ignition on.
FunctionParameter or Status
checked or ActionDisplay and
notesFault finding
Lock AirbagsET073:Computer locked
by toolYES or NO
This status indicates whether or
not the computer is locked.In the event of a fault, apply the
interpretation of DF034 "Computer
locked".
ET143:Passenger
airbag(s) lockedYES or NO
This status indicates the locking
of the passenger trigger lines
(passenger front airbag,
passenger chest-level airbag,
if fitted).In the event of a fault, apply the
interpretation of DF193 "Change of
passenger airbag locking status"
and DF091 "Airbag locking switch
circuit".
ET103:Type of
passenger airbag
lockingYES or NO
This status indicates the
inhibited trigger lines when the
passenger airbag is inhibited
(passenger front airbag,
passenger front chest-level
airbag, if fitted).In the event of a fault, apply the
interpretation of DF091 "Airbag
locking switch circuit " then DF193
"Change of passenger airbag
locking status".
ET169:Driver's seat belt
contactOPEN - CLOSED - FAULTY
This status is used to check
whether the driver buckle switch
is working properly.In the event of a fault, apply the
interpretation of DF232 "Driver's seat
belt buckle sensor circuit".
PR147:Airbag locking
circuit
impedance380 Ω +/- 40 Ω, this resistance
indicates that the passenger
airbag locking switch is "ON".
or
90 Ω +/- 10 Ω, this resistance
indicates that the passenger
airbag locking switch is "OFF"In the event of a fault, apply the
interpretation of DF091 "Airbag
locking switch circuit " then DF193
"Change of passenger airbag
locking status".