seat memory RENAULT SCENIC 2011 J95 / 3.G Air Bag RC5 - Seat Belt Pretensioners Workshop Manual
[x] Cancel search | Manufacturer: RENAULT, Model Year: 2011, Model line: SCENIC, Model: RENAULT SCENIC 2011 J95 / 3.GPages: 88, PDF Size: 0.47 MB
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88C
AIRBAGS AND PRETENSIONERS
Fault finding – System operation
The purpose of the air bag system RC5 P1/P2 is to provide optimum safety protection for all of the vehicle
occupants.
Special notes:
The MEGANE is equipped with driver and passenger seat belt buckle pretensioners in the front section.
The MEGANE is equipped with an "anti-submarine" airbag inside the seat base
The MEGANE is equipped with driver and passenger chest-level airbags in the rear section.
On MEGANE phase 1,
Warning light management: the status of the airbag fault warning light takes priority in relation to the status of
the passenger airbag warning light.
Impact management: a single level is emitted over the CAN line.
On MEGANE phase 2,
Warning light management: the two warning lights cannot be separated and the status of the passenger airbag
warning light is maintained when the airbag fault warning light illuminates.
Impact management: two levels of separate impacts are emitted over the CAN line.
Frontal impacts:
This function is performed entirely inside the computer. Accelerometers measure the violence of the impact. Vehicle
speed, driver's seat position, passenger airbag locking switching position and the accelerometer measurements
determine the strategy that the computer adopts to trigger the ignition modules. The front and rear seat belt inertia
reels, the front seat belt pretensioners, the face air bags (levels 1 and 2) can also be triggered or not according to
the entry parameters.
Side impacts:
This function is performed by the computer and the side impact sensors.
The position of the passenger airbag locking switch and the accelerometer measurements determine the strategy
that the computer adopts to trigger the ignition modules. The seat belt inertia reels, the seat belt pretensioners,
the front chest airbags and the curtain airbags thus may or may not be triggered.
Seat belt locking monitoring:
This function is performed by the instrument panel. The computer only sends the driver's seat belt buckle sensor
status. A warning light on the instrument panel is displayed if the driver is not wearing his seat belt, and a buzzer
reminds the driver of this when the vehicle speed exceeds 12 mph (20 km/h).
Inhibition of passenger trigger lines:
This function is performed by the computer and the passenger airbag locking switch.
The choice of whether or not to deactivate the passenger airbags must be made before the vehicle speed exceeds
0.3 mph (0.5 km/h). The computer measures an impedance (100Ω= Passenger Airbag deactivated;
400Ω= Passenger Airbag active). Above the threshold, any action on the locking switch results in storage of
the fault DF193and the instrument panel warning light is illuminated.
The front passenger airbag (levels 1 and 2), the passenger lap belt pretensioner and the front passenger
chest-level airbag are deactivated when the locking switch is in the OFF position or when the fault
DF193 "Change of passenger airbag locking status" is present in the computer memory.
Monitoring the information displayed on the instrument panel:
The instrument panel controls the correct working of warning lights "air bag failure" and "air bag OFF" and informs
the air bag computer about possible warning light circuit failures through the multiplex network.
AIRBAG RC5
Vdiag: 14
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AIRBAGS AND PRETENSIONERS
Fault finding – Replacement of components
REPLACING A SYSTEM COMPONENT
Disconnect the battery before removing and refitting any pyrotechnic component (airbag module,
pretensioner or seat belt retractor).
REPLACING THE AIRBAG COMPUTER
BEFORE REPLACING THE COMPUTER IT IS ESSENTIAL THAT YOU CONTACT THE TECHLINE.
To ensure that the returned computer's fault can be analysed, do not use command RZ001 "Fault memory"
when DF001 "Computer" is present or stored.
The airbag computers are sold in locked mode to avoid all risk of accidental triggering (all ignition lines are inhibited).
The "locked" mode is indicated when the airbag fault warning light on the instrument panel illuminates.
Follow this procedure to replace an airbag computer:
– check that the ignition is switched off,
– replace the computer,
– modify the computer configuration if necessary,
– write the VIN to the computer using the diagnostic tool command VP010 Write VIN,
– switch off the ignition,
– carry out a check using the diagnostic tool,
– unlock the computer using the command VP007 Unlock computer, only if there are no faults declared by the
diagnostic tool and check that the warning light has gone out.
After the computer has been replaced, if there are abnormalities on the impact sensors, it is necessary to check that
the sensors fitted are compatible with the airbag computer connected to the vehicle. If not, it is necessary to order
the sensors which are specifically for the respective airbag.
Note:
After the airbag computer is replaced, if the engine no longer starts, restore the injection operation by applying the
following procedure:
– Run command RZ001 to clear the faults from the injection computer memory (even if no present or stored faults
are declared).
– Switch off the ignition and wait for loss of dialogue with the injection computer.
–Drive for 1 minute at a speed greater than 21 mph (35 km/h) to restore the operation of the steering column
lock.
AIRBAG RC5
Vdiag: 14
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AIRBAGS AND PRETENSIONERS
Fault finding – Interpretation of faults
AIRBAG RC5
Vdiag: 14
88C
DF065
PRESENT
OR
STORED
DRIVER'S SEAT POSITION SENSOR CIRCUIT
CO : Open circuit
CC : Short circuit
CC.0 : Short circuit to earth
CC.1: Short circuit to +12 volts
1.DEF : Configuration
2.DEF : Values outside permissible tolerances
NOTESPriorities when dealing with a number of faults:
If DF065 is present with at least one of the faults DF077, DF232, DF081, begin fault
finding by checking the 8-track connector located underneath the seat.
Special notes:
Use the 64-track adapter Elé. 1717 when working on the computer connector.
CO
CC
CC.0
CC.1
2.DEF
NOTESNone.
Lock the computer using the diagnostic tool.
Fit the 64-track test adapter Elé. 1717 and measure the resistance between the tracks 9 and 10, with the seat in
the forward position and in the back position.
When the seat is forward, the resistance should be approximately 400Ω (275Ω
If the resistance is incorrect, check that the seat position sensor is correctly fitted on the seat runner.
Check the connections of the 8-track seat connector (tracks A1 and A2).
If all the tests are correct, replace the driver's front seat position sensor.
AFTER REPAIRReconnect the computer, the seat position sensor, and the under-seat connector, then
switch on the ignition again. Clear the computer fault memory. Switch off the ignition.
Carry out the check again using the diagnostic tool and, if there is no fault, unlock the
computer.
ABGRC5_V14_DF065
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AIRBAGS AND PRETENSIONERS
Fault finding – Interpretation of faults
AIRBAG RC5
Vdiag: 14
88C
DF065
CONTINUED
1.DEF
NOTESNone.
This fault corresponds to an inconsistency between the computer configuration and the vehicle equipment
detected by the computer.
The computer detects the presence of an additional component to its configuration or the computer detects a
programmed component which is not fitted to the vehicle.
AFTER REPAIRReconnect the computer, the seat position sensor, and the under-seat connector, then
switch on the ignition again.
Clear the computer fault memory.
Switch off the ignition.
Carry out the check again using the diagnostic tool and, if there is no fault, unlock the
computer.
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AIRBAGS AND PRETENSIONERS
Fault finding – Interpretation of faults
AIRBAG RC5
Vdiag: 14
88C
DF068
PRESENT
OR
STORED
PASSENGER CHEST FRONT SIDE AIRBAG CIRCUIT
CC : Short circuit
CO : Open circuit
CC.1: Short circuit to +12 volts
CC.0 : Short circuit to earth
1.DEF : Configuration
NOTESIf 1.DEF, check and modify the computer configuration.
Priorities when dealing with a number of faults:
If DF068 is present with the fault DF082 begin fault finding by checking the 8-track
connector located underneath the seat.
Special notes:
Never take measurements on the ignition lines with any tool other than the CLIP or
XRBAG tool.
Use the 64-track adapter Elé. 1717 when working on the computer connector and
use the 8-track adapter Elé. 1617 when working on the seat.
CO
CC
NOTESSpecial notes:
Correct the trigger line configuration if the vehicle is not
fitted with passenger front side thorax airbags>
Lock the computer using the diagnostic tool.
Disconnect the computer connector and fit the 64-track adapter Elé. 1717.
The CLIP or XRBAG tool must be used to measure the resistance on the adapter cable marked F.
If the value obtained is correct, check the connections of the 64-track connector (tracks 43 and 44).
Check the connections of the 8-track connector located underneath the seat.
Repair if necessary. Fit the 8-track test adapter Elé. 1617 underneath the seat (point C1).
The CLIP or XRBAG tool must be used to measure the resistance on the adapter cable B.
Is the value obtained correct?
AFTER REPAIRReconnect the computer and the ignition module of the passenger's front side airbag
module then switch on the ignition again. Clear the computer fault memory. Switch off
the ignition. Carry out the check again using the diagnostic tool and, if there is no
fault, unlock the computer. When replacing the airbag module, do not forget to
reconnect the earth on the new module.
Destroy the chest-level side airbag module if it has been replaced (tool Elé. 1287).
ABGRC5_V14_DF068
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V5
AIRBAGS AND PRETENSIONERS
Fault finding – Interpretation of faults
AIRBAG RC5
Vdiag: 14
88C
DF077
PRESENT
OR
STORED
DRIVER'S CHEST FRONT SIDE AIRBAG CIRCUIT
CC: Short circuit
CO: Open circuit
CC.1: Short circuit to + 12 volts
CC.0: Short circuit to earth
1.DEF: Configuration
NOTESIf 1.DEF, check and modify the computer configuration.
Priorities when dealing with a number of faults:
If DF077 is present with at least one of the faults DF065, DF232, DF081, begin fault
finding by checking the 8-track connector located underneath the seat.
Special notes:
Never carry out measuring on the trigger lines with any tool other than CLIP
or XRBAG.
Use the 64-track adapter Elé. 1717 when working on the computer connector
and use the 8-track adapter Elé. 1617 when working on the seat.
CO
CC
NOTESSpecial notes:
Correct the trigger line configuration if the vehicle is not
fitted with driver's front side thorax airbags.
Lock the computer using the diagnostic tool.
Disconnect the computer connector and fit the 64-track adapter Elé. 1717.
The CLIP or XRBAG tool must be used to measure the resistance on the adapter cable marked H.
If the value obtained is correct, check the connections of the 64-track connector (tracks 15 and 16).
Check the connections of the 8-track connector located underneath the seat.
Repair if necessary. Fit the 8-track test adapter Elé. 1617 on the seat (point C1).
The CLIP or XRBAG tool must be used to measure the resistance on the adapter cable B.
Is the value obtained correct?
AFTER REPAIRReconnect the computer and driver's frontal airbag ignition modules, then switch on
the ignition again.
Clear the computer fault memory. Switch off the ignition.
Carry out the check again using the diagnostic tool and, if there is no fault, unlock
the computer. When replacing the airbag module, do not forget to reconnect the earth
on the new module.
Destroy the driver's front airbag if it has been replaced (tool Elé. 1287).
ABGRC5_V14_DF077
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AIRBAG RC5
Vdiag: 14AIRBAGS AND PRETENSIONERS
Fault finding – Interpretation of faults88C
DF077
CONTINUED 1
NO
Check the seat connector connections (tracks A5 and A6).
Strip the driver's seat and check that the chest side airbag ignition module is connected
correctly.
Disconnect the chest side airbag ignition module, connect a dummy ignition module to
the ignition module connector and check the resistance again on cable B
of the adapter.
– If the value obtained is correct, replace the driver's front chest side airbag module.
– If the value obtained is incorrect, replace the wiring between points C1 and C3
(seat wiring).
YESCheck the seat connector connections (tracks A5 and A6) again, as well as the
connections of the 64-track connector (tracks 15 and 16).
If the fault is still present, the wiring is faulty between the computer and the driver's seat
(C0/C1).
Replace the wiring if necessary.
AFTER REPAIRReconnect the computer and driver's frontal airbag ignition modules, then switch on
the ignition again.
Clear the computer fault memory. Switch off the ignition.
Carry out the check again using the diagnostic tool and, if there is no fault, unlock
the computer.
When replacing the airbag module, do not forget to reconnect the earth on the new
module.
Destroy the driver's front airbag if it has been replaced (tool Elé. 1287).
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AIRBAG RC5
Vdiag: 14AIRBAGS AND PRETENSIONERS
Fault finding – Interpretation of faults88C
DF077
CONTINUED 2
CC.1
CC.0
NOTESNone.
Lock the computer using the diagnostic tool.
Disconnect the computer connector and fit the 64-track adapter Elé. 1717.
The CLIP or XRBAG tool must be used to measure the insulation appropriate to the type of fault on the adapter
cable marked H.
If the value obtained is correct, check the connections of the 64-track connector (tracks 15 and 16).
Check the connections of the 8-track connector located underneath the seat. Repair if necessary. Fit the 8-track
test adapter Elé. 1617 underneath the seat (point C1).
The CLIP or XRBAG tool must be used to measure the insulation appropriate to the type of fault on the adapter
cable B.
Is the value obtained correct?
NO
Driver's seat wiring fault (C1/C3).
Replace the wiring harness between points C1 and C3 (seat wiring) if necessary.
YESCheck the seat connector connections (tracks A5 and A6) again, as well as
the connections of the 64-track connector (tracks 15 and 16).
If the fault is still present, the wiring is faulty between the computer and the driver's seat
(C0/C1).
Replace the wiring if necessary.
AFTER REPAIRReconnect the computer and driver's frontal airbag ignition modules, then switch on
the ignition again.
Clear the computer fault memory. Switch off the ignition.
Carry out the check again using the diagnostic tool and, if there is no fault, unlock
the computer.
When replacing the airbag module, do not forget to reconnect the earth on the new
module.
Destroy the driver's front airbag if it has been replaced (tool Elé. 1287).
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V5
AIRBAGS AND PRETENSIONERS
Fault finding – Interpretation of faults
AIRBAG RC5
Vdiag: 14
88C
DF081
PRESENT
OR
STORED
DRIVER'S LAP BELT PRETENSIONER
CC: Short circuit
CO: Open circuit
CC.1: Short circuit to + 12 volts
CC.0: Short circuit to earth
1.DEF: Configuration
NOTESIf 1.DEF, check and modify the computer configuration.
Special notes:
Depending on the vehicle bodywork definition, this fault relates to a fault on the lap
belt pretensioner circuit or the seat base airbag (anti-submarine airbag).
Never take measurements on the ignition lines with any tool other than the CLIP
or XRBAG tool.
Use the 64-track adapter Elé. 1717 when working on the computer connector
and use the 8-track adapter Elé. 1617 when working on the seat.
CC
CO
NOTESCorrect the configuration of the ignition lines if the vehicle is
not fitted with a driver's lap belt/seat base airbag.
Lock the computer using the diagnostic tool.
Disconnect the computer connector and fit the 64-track adapter Elé. 1717.
The CLIP or XRBAG tool must be used to measure the resistance on the adapter cable marked B.
If the value indicated is correct, check the connections of the 64-track connector (tracks 3 and 4).
Check the connections of the 8-track connector under the seat.
Repair if necessary.
Fit the 8-track test adapter Elé. 1617 underneath the seat (point C1).
The CLIP or XRBAG tool must be used to measure the resistance on cable D.
Is the value obtained correct?
AFTER REPAIRReconnect the computer and driver's seat base/lap airbag ignition module, then switch
on the ignition again. Clear the computer fault memory. Switch off the ignition.
Carry out the check again using the diagnostic tool and, if there is no fault, unlock
the computer.
When replacing the airbag module, do not forget to reconnect the earth on the new
module.
Destroy the driver's seat base airbag module or the lap belt pretensioner if they have
been replaced (tool Elé. 1287).
ABGRC5_V14_DF081
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AIRBAG RC5
Vdiag: 14AIRBAGS AND PRETENSIONERS
Fault finding – Interpretation of faults88C
DF081
CONTINUED 1
NO
Check the seat connector connections (tracks A7 and A8).
Check that the driver's seat lap belt/seat base airbag ignition module is correctly
connected.
Disconnect the driver's seat base/lap airbag ignition module, connect a dummy ignition
module to the ignition module connector and check the resistance again on cable D.
– If the value indicated is correct, replace the driver's seat lap belt/seat base airbag
module.
– If the value obtained is incorrect, replace the wiring between points C1 and C3
(seat wiring).
YESCheck the seat connector connections (tracks A7 and A8) again, as well as
the connections of the 64-track connector (tracks 3 and 4).
If the fault is still present, the wiring is faulty between the computer and the driver's seat
(C0/C1).
Replace the wiring if necessary.
AFTER REPAIRReconnect the computer and driver's seat base/lap airbag ignition module, then switch
on the ignition again. Clear the computer fault memory. Switch off the ignition.
Carry out the check again using the diagnostic tool and, if there is no fault, unlock
the computer.
When replacing the airbag module, do not forget to reconnect the earth on the new
module.
Destroy the driver's seat base airbag module or the lap belt pretensioner if they have
been replaced (tool Elé. 1287).