ABS RENAULT SCENIC 2011 J95 / 3.G Air Bag ACU4 - Seat Belt Pretensioners Workshop Manual

AIRBAG - SEAT BELT PRETENSIONERS
Fault finding - Fault Interpretation
88C - 49
88C
V3 MR-372-J84-88C000$072.mif
AIRBAG ACU4
Vdiag: 04
AIRBAG - SEAT BELT PRETENSIONERS
Fault finding - Fault Interpretation
DF077
PRESENT
DRIVER'S CHEST FRONT SIDE AIRBAG CIRCUIT
CC : Short circuit
CO : Open circuit
CC.1 : Short circuit to + 12 V
CC.0 : Short circuit to earth
1.DEF : Configuration
NOTESIf 1.DEF, check and adjust the computer configuration.
Priorities when dealing with multiple faults: If DF077 is present with at least one of
DF065, DF210, DF232, or DF240, begin the fault finding by checking the 22-track
under-seat connector.
Special notes: never carry out measuring operations on trigger lines using any tool
other than CLIP or XRBAG.
Use the 64-track (Elé. 1717) adapter for working on the computer connector and the
22-track (Elé. 1687) adapter for working on the seat.
CO - CC
NOTESSpecial notes: correct the trigger line configuration if the
vehicle is not fitted with a driver's front chest side airbag.
Lock the computer, disconnect the computer connector and attach 64-track adapter (Elé. 1717). The CLIP or
XRBAG tool absolutely must be used to measure the resistance in the adapter cable marked H.
If the value indicated is correct, check the connections of the 64-track (tracks 15 and 16) connector.
Check the connections of the 22-track connector under the seat. Repair if necessary. Attach the 22-track
(Elé. 1687) test adapter under the seat (point C1).
The CLIP or XRBAG tool absolutely must be used to measure the resistance in cable A.
Is the value obtained correct?
NO
YES
Check the seat connector connections (tracks 11 and 12).
Remove the trim from the driver's seat and check that the chest side airbag ignition module is properly
connected.
Disconnect the chest side airbag ignition module, connect a dummy ignition module to the ignition
module connector and again measure the resistance in cable A.
– If the value obtained is correct, replace the driver's chest front side airbag module.
– If the value obtained is still not correct, replace the wiring between points C1 and C3 (seat wiring).
Check the seat connector connections (tracks 11 and 12) again, as well as those of the 64-track
(tracks 15 and 16) connector.
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 the ignition module of the driver's front side airbag
module then switch on the ignition. Clear the computer memory then switch off the
ignition.
Carry out the check again using the diagnostic tool and, if there are no faults, unlock
the computer. When replacing the airbag module, do not forget to reconnect the earth
on the new one.
Destroy the chest side airbag module if it has been replaced (tool Elé. 1287).
ACU4 Vdiag04 J84 1.0
MR-372-J84-88C000$072.mif

AIRBAG - SEAT BELT PRETENSIONERS
Fault finding - Fault Interpretation
88C - 50
88C
V3 MR-372-J84-88C000$072.mif
AIRBAG ACU4
Vdiag: 04
DF077
CONTINUED
CC.1 - CC.0
NOTESNone.
Lock the computer, disconnect the computer connector and attach 64-track adapter (Elé. 1717). The CLIP or
XRBAG tool absolutely must be used to measure the proper insulation for the type of fault in the adapter cable
marked H.
If the value indicated is correct, check the connections of the 64-track (tracks 15 and 16) connector.
Check the connections of the 22-track connector under the seat. Repair if necessary. Attach the 22-track
(Elé. 1687) test adapter under the seat (point C1).
The CLIP or XRBAG tool absolutely must be used to measure the proper insulation for the type of fault in
cable A.
Is the value obtained correct?
NO
YES
– Driver's seat wiring fault (C1/C3).
– Replace the wiring between points C1 and C3 (seat wiring) if necessary.
Check the seat connector connections (tracks 11 and 12) again, as well as those of
the 64-track (tracks 15 and 16) connector.
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 the ignition module of the driver's front side airbag
module then switch on the ignition. Clear the computer memory then switch off the
ignition.
Carry out the check again using the diagnostic tool and, if there are no faults, unlock
the computer. When replacing the airbag module, do not forget to reconnect the earth
on the new one.
Destroy the chest side airbag module if it has been replaced (tool Elé. 1287).
ACU4 Vdiag04 J84 1.0

AIRBAG - SEAT BELT PRETENSIONERS
Fault finding - Fault Interpretation
88C - 55
88C
V3 MR-372-J84-88C000$072.mif
AIRBAG ACU4
Vdiag: 04
DF210
PRESENT
FRONT BUCKLE PRETENSIONNERS CIRCUIT
CC : Short circuit
CO : Open circuit
CC.1 : Short circuit to + 12 V
CC.0 : Short circuit to earth
1.DEF : Configuration
NOTESIf 1.DEF Check and adjust the computer configuration.
Special notes: the front buckle pretensioners are serially wired.
Never do measuring on the trigger lines with any tool other than CLIP or XRBAG.
Use the 64-track (Elé. 1717) adapter to work on the computer connector.
CO - CC
NOTESNone.
Lock the computer.
Switch off the ignition and check that the ignition module of the driver's seat buckle pretensioner is properly
connected.
Disconnect the ignition module of the pretensioner and connect a dummy ignition module to the ignition module
connector.
Switch on the ignition and carry out a check using the diagnostic tool.
Replace the driver's seat buckle pretensioner if the fault becomes stored (fault no longer declared present).
Switch off the ignition and check that the ignition module of the passenger's seat buckle pretensioner is
properly connected.
Disconnect the ignition module of the pretensioner and connect a dummy ignition module to the ignition module
connector.
Switch on the ignition and carry out a check using the diagnostic tool.
Replace the passenger seat buckle pretensioner ignition module if the fault becomes stored (fault no longer
declared present).'
Disconnect the computer and check the connector connections (tracks 1, 2, 37 and 38).
Attach 64-track adapter (Elé. 1717).
The CLIP or XRBAG tool absolutely must be used to measure the resistance in adapter cable A.
If the value obtained is incorrect, the wiring is faulty between the computer and the driver's seat buckle
pretensioner ignition module (C0/C3).
See next page.
The CLIP or XRBAG tool absolutely must be used to measure the resistance in adapter cable C.
If the value obtained is incorrect, the wiring is faulty between the computer and the passenger seat buckle
pretensioner (C0/C3).
See next page.
AFTER REPAIRReconnect the computer and the buckle pretensioners then switch on the ignition
again.
Clear the computer memory then switch off the ignition.
Carry out the check again using the diagnostic tool and, if there are no faults, unlock
the computer.
Destroy any pretensioners that have been replaced (tool Elé. 1287).
ACU4 Vdiag04 J84 1.0

AIRBAG - SEAT BELT PRETENSIONERS
Fault finding - Fault Interpretation
88C - 56
88C
V3 MR-372-J84-88C000$072.mif
AIRBAG ACU4
Vdiag: 04
DF210
CONTINUED 1
Check the connections of the 22-track connector under the seat (tracks 7 and 8). Repair if necessary.
Attach the 22-track (Elé. 1687) test adapter under the seat (point C1).
The CLIP or XRBAG tool absolutely must be used to measure the resistance in cable C.
Is the value obtained correct?
NO
YES
Check seat side seat connector connections again (tracks 8 and 7).
If the fault persists, the wiring is faulty between the 22-track seat connector and the
buckle pretensioner of the faulty seat (C1/C3).
Again check the connections of the seat connector (tracks 7 and 8) on the
passenger compartment wiring side and of the 64-track (driver seat tracks 1 and
2 or passenger seat tracks 37 and 38) connector.
If the fault persists, the wiring is faulty between the computer and the seat displaying
the fault (C0/C1). Replace the wiring if necessary.
AFTER REPAIRReconnect the computer and the buckle pretensioners then switch on the ignition
again.
Clear the computer memory then switch off the ignition.
Carry out the check again using the diagnostic tool and, if there are no faults, unlock
the computer.
Destroy any pretensioners that have been replaced (tool Elé. 1287).
ACU4 Vdiag04 J84 1.0

AIRBAG - SEAT BELT PRETENSIONERS
Fault finding - Fault Interpretation
88C - 57
88C
V3 MR-372-J84-88C000$072.mif
AIRBAG ACU4
Vdiag: 04
DF210
CONTINUED 2
CC.0 - CC.1
NOTESNone.
Lock the computer.
Disconnect the computer and check the connector connections (tracks 1, 2, 37 and 38).
Attach 64-track adapter (Elé. 1717).
The CLIP or XRBAG tool absolutely must be used to measure the proper insulation for the type of fault in
adapter cable A.
If the value obtained is incorrect, the wiring is faulty between the computer and the driver's seat buckle
pretensioner ignition module (C0/C3). See interpretationA.
The CLIP or XRBAG tool absolutely must be used to measure the proper insulation for the type of fault in
adapter cable C.
If the value obtained is incorrect, the wiring is faulty between the computer and the passenger seat buckle
pretensioner (C0/C3). See interpretationA.
Check the connections of the 22-track connector under the seat (tracks 7 and 8). Repair if necessary.
Attach the 22-track (Elé. 1687) test adapter under the seat (point C1).
The CLIP or XRBAG absolutely must be used to measure the proper insulation for the type of fault in cable C.
Is the value obtained correct?
NO
YES
If the fault persists, the wiring is faulty between the 22-track seat connector and the
buckle pretensioner of the faulty seat (C1/C3).
Replace the wiring if necessary.
Faulty wiring between the computer and the seat displaying the fault (C0/C1).
Replace the wiring if necessary.
AFTER REPAIRReconnect the computer and the buckle pretensioners then switch on the ignition
again.
Clear the computer memory then switch off the ignition.
Carry out the check again using the diagnostic tool and, if there are no faults, unlock
the computer.
Destroy any pretensioners that have been replaced (tool Elé. 1287).
ACU4 Vdiag04 J84 1.0

AIRBAG - SEAT BELT PRETENSIONERS
Fault finding - Fault Interpretation
88C - 60
88C
V3 MR-372-J84-88C000$072.mif
AIRBAG ACU4
Vdiag: 04
DF239
PRESENT
REAR SEAT BELT RETRACTORS CIRCUIT
CC : Short circuit
CO : Open circuit
CC.1 : Short circuit to + 12 V
CC.0 : Short circuit to earth
1.DEF : Configuration
NOTESIf 1.DEF, check and adjust the computer configuration.
Special notes: the rear seat belt retractors are serially wired.
Never do measuring on the trigger lines with any tool other than CLIP or XRBAG.
Use the 64-track (Elé. 1717) adapter to work on the computer connector.
CO - CC
NOTESSpecial notes: Correct the trigger line configuration if the
vehicle is not fitted with rear seat-belt retractors.
Lock the computer.
Switch off the ignition and check that the ignition module of the rear seat belt retractor, driver's side is correctly
connected.
Disconnect the ignition module of the retractor and connect a dummy ignition module to the ignition module
connector.
Switch on the ignition and carry out a check using the diagnostic tool.
Replace the rear seat belt retractor, driver's side, if the fault becomes stored (fault no longer declared present).
Switch off the ignition and check that the ignition module of the rear seat belt retractor, passenger's side is
correctly connected.
Disconnect the ignition module of the retractor and connect a dummy ignition module to the ignition module
connector.
Switch on the ignition and carry out a check using the diagnostic tool.
Replace the passenger's side rear seat belt retractor if the fault becomes stored (fault no longer declared
present).
Disconnect the computer and check the connections of the connector (tracks 19, 20, 41 and 42).
Attach 64-track adapter (Elé. 1717).
The CLIP or XRBAG tool absolutely must be used to measure the resistance in adapter cable J.
If the value indicated is incorrect, the wiring between the computer and the driver's side rear seat belt retractor
ignition module (C0/C3) is faulty.
Repair or replace the wiring if necessary.
The CLIP or XRBAG absolutely must be used to measure the resistance in adapter cable E.
If the value indicated is incorrect, the wiring between the passenger's side rear seat belt retractor ignition
module (C0/C3) is faulty.
Repair or replace the wiring if necessary.
AFTER REPAIRReconnect the computer and seat belt retractor, then switch on the ignition again.
Clear the computer memory then switch off the ignition.
Carry out the check again using the diagnostic tool and, if there are no faults, unlock
the computer.
Destroy any retractors that have been replaced (tool Elé. 1287).
ACU4 Vdiag04 J84 1.0

AIRBAG - SEAT BELT PRETENSIONERS
Fault finding - Fault Interpretation
88C - 61
88C
V3 MR-372-J84-88C000$072.mif
AIRBAG ACU4
Vdiag: 04
DF239
CONTINUED
CC.0 - CC.1
NOTESNone.
Lock the computer.
Disconnect the computer and check the connections of the connector (tracks 19, 20, 41 and 42).
Attach 64-track adapter (Elé. 1717).
The CLIP or XRBAG absolutely must be used to measure the proper insulation for the type of fault in adapter
cable J.
If the value indicated is incorrect, the wiring between the computer and the driver's side rear seat belt retractor
ignition module (C0/C3) is faulty.
Repair or replace the wiring if necessary.
The CLIP or XRBAG tool absolutely must be used to measure the proper insulation for the type of fault in
adapter cable E.
If the value indicated is incorrect, the wiring between the computer and the passenger's side rear seat belt
retractor ignition module (C0/C3) is faulty.
Repair or replace the wiring if necessary.
AFTER REPAIRReconnect the computer and seat belt retractor, then switch on the ignition again.
Clear the computer memory then switch off the ignition.
Carry out the check again using the diagnostic tool and, if there are no faults, unlock
the computer.
Destroy any retractors that have been replaced (tool Elé. 1287).
ACU4 Vdiag04 J84 1.0

AIRBAG - SEAT BELT PRETENSIONERS
Fault finding - Fault Interpretation
88C - 62
88C
V3 MR-372-J84-88C000$072.mif
AIRBAG ACU4
Vdiag: 04
DF240
PRESENT
DRIVER'S SEAT-CUSHION AIRBAG / LAP BELT CIRCUIT
CC : Short circuit
CO : Open circuit
CC.1 : Short circuit to + 12 V
CC.0 : Short circuit to earth
1.DEF : Configuration
NOTESIf 1.DEF, check and adjust the computer configuration.
Priorities when dealing with multiple faults: If DF240 is present with at least one of
DF077, DF065, DF210 or DF232, begin the fault finding by checking the 22-track
under-seat connector.
Special notes: depending on the type of vehicle body, this is either a lap belt
pretensioner circuit fault or seat-cushion air bag (anti-skid airbag) fault.
Never do measuring on the trigger lines with any tool other than CLIP or XRBAG.
Use the 64-track (Elé. 1717) adapter for working on the computer connector and the
22-track (Elé. 1687) adapter for working on the seat.
CO - CC
NOTESSpecial notes: correct the trigger line configuration if the
vehicle is not fitted with a driver's seat-cushion airbag / lap
belt.
Lock the computer, disconnect the computer connector and attach 64-track adapter (Elé. 1717). The CLIP or
XRBAG tool absolutely must be used to measure the resistance in 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 22-track connector under the seat. Repair if necessary. Attach the 22-track
(Elé. 1687) test adapter under the seat (point C1).
The CLIP or XRBAG tool absolutely must be used to measure the resistance in cable B.
Is the value obtained correct?
NO
YES
Check the seat connector connections (tracks 9 and 10).
Make sure the driver's seat-cushion airbag/lap belt ignition module is properly connected.
Disconnect the driver's seat-cushion airbag/lap belt ignition module, connect a dummy ignition
module to the ignition module connector, then again measure the resistance in cable B.
– If the value indicated is correct, replace the driver's seat-cushion airbag/lap belt module.
– If the value obtained is still not correct, replace the wiring between points C1 and C3 (seat
wiring).
Again check the connections of the seat connector (tracks 9 and 10) and of the 64-track
(tracks 3 and 4) connector.
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 the driver's seat-cushion airbag/lap belt ignition module,
then switch the ignition back on. Clear the computer memory then switch off the
ignition.
Carry out the check again using the diagnostic tool and, if there are no faults, unlock
the computer. When replacing the airbag module, do not forget to reconnect the earth
on the new one. Destroy the seat airbag module or driver's seat lap belt pretensioner
if it has been replaced(tool Elé. 1287).
ACU4 Vdiag04 J84 1.0

AIRBAG - SEAT BELT PRETENSIONERS
Fault finding - Fault Interpretation
88C - 63
88C
V3 MR-372-J84-88C000$072.mif
AIRBAG ACU4
Vdiag: 04
DF240
CONTINUED
CC.1 - CC.0
NOTESNone.
Lock the computer.
Check the connections of the 22-track connector under the seat. Repair if necessary. Attach the 22-track
(Elé. 1687) test adapter under the seat (point C1).
The CLIP or XRBAG tool absolutely must be used to measure the proper insulation for the type of fault in
cable B.
Is the value obtained correct?
NO
YES
Seat wiring fault.
Replace the wiring between pointsC1 and C3.
Wiring fault between the computer and driver's seat (C0/C1).
Replace the wiring if necessary.
AFTER REPAIRReconnect the computer and the driver's seat-cushion airbag/lap belt ignition module,
then switch the ignition back on. Clear the computer memory then switch off the
ignition.
Carry out the check again using the diagnostic tool and, if there are no faults, unlock
the computer. When replacing the airbag module, do not forget to reconnect the earth
on the new one.
Destroy the seat airbag module or driver's seat lap belt pretensioner if it has been
replaced (tool Elé. 1287).
ACU4 Vdiag04 J84 1.0

AIRBAG - SEAT BELT PRETENSIONERS
Fault finding - Fault Interpretation
88C - 64
88C
V3 MR-372-J84-88C000$072.mif
AIRBAG ACU4
Vdiag: 04
DF241
PRESENT
PASSENGER'S SEAT-CUSHION AIRBAG / LAP BELT CIRCUIT
CC : Short circuit
CO : Open circuit
CC.1 : Short circuit to + 12 V
CC.0 : Short circuit to earth
1.DEF : Configuration
NOTESIf 1.DEF, check and adjust the computer configuration.
Priorities when dealing with multiple faults: If DF241 is present with at least one of
DF068, DF210 or DF232, begin the fault finding by checking the 22-track under-seat
connector.
Special notes: depending on the type of vehicle body, this is either a lap belt
pretensioner circuit fault or seat-cushion airbag (anti-skid airbag) fault.
Never do measuring on the trigger lines with any tool other than CLIP or XRBAG.
Use the 64-track (Elé. 1717) adapter for working on the computer connector and the
22-track (Elé. 1687) adapter for working on the seat.
CO - CC
NOTESSpecial notes: correct the trigger line configuration if the
vehicle is not fitted with a passenger seat-cushion airbag /
lap belt.
Lock the computer, disconnect the computer connector and attach 64-track adapter (Elé. 1717). The CLIP or
XRBAG tool absolutely must be used to measure the resistance in the adapter cable marked D.
If the value obtained is correct, check the connections of the 64-track (tracks 39 and 40) connector.
Check the connections of the 22-track connector under the seat. Repair if necessary. Attach the 22-track
(Elé. 1687) test adapter under the seat (point C1).
The CLIP or XRBAG tool absolutely must be used to measure the resistance in cable B.
Is the value obtained correct?
NO
YES
Check the seat connector connections (tracks 9 and 10).
Make sure the passenger seat-cushion airbag/lap belt ignition module is properly connected.
Disconnect the passenger seat-cushion airbag/lap belt ignition module, connect a dummy
ignition module to the ignition module connector, then again measure the resistance in
cable B.
– If the value indicated is correct, replace the passenger seat-cushion airbag/lap belt module.
– If the value obtained is still not correct, replace the wiring between points C1 and C3 (seat
wiring).
Again check the connections of the seat connector (tracks 9 and 10) and of the 64-track
(tracks 39 and 40) connector.
If the fault persists, the wiring is faulty between the computer and the passenger seat (C0/C1).
Replace the wiring if necessary.
AFTER REPAIRReconnect the computer and the passenger seat-cushion airbag/lap belt ignition
module, then switch the ignition back on. Clear the computer memory then switch off
the ignition.
Carry out the check again using the diagnostic tool and, if there are no faults, unlock
the computer. When replacing the airbag module, do not forget to reconnect the earth
on the new one.
Destroy the seat airbag module or driver's seat lap belt pretensioner if it has been
replaced (tool Elé. 1287).
ACU4 Vdiag04 J84 1.0