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

AIRBAG - SEAT BELT PRETENSIONERS
Fault finding - Interpretation of faults
88C-41
88C
V3 MR-372-J84-88C000$071.mif
AIRBAG ACU4
VDIAG No.: 04
DF071
PRESENT
DRIVER'S FRONT AIR BAG CIRCUIT 2
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 modify the computer configuration.
Special notes: never carry out measuring operations on trigger lines using any tool
other than CLIP or XRBAG.
Use the 22-track adapter (Elé. 1685) when working on the computer connector.
CO - CC
NOTESNone.
Lock the computer using the command on the diagnostic tool.
Switch off the ignition and remove the driver's frontal airbag.
Check that it is correctly connected.
Disconnect the driver's frontal airbag and attach 2 dummy ignition modules to the ignition module connectors.
Switch on the ignition and carry out a check using the diagnostic tool.
Replace the driver's frontal airbag if the fault becomes stored (fault no longer declared present).
With the ignition switched off, disconnect and reconnect the connector of the rotary contact beneath the
steering wheel.
Check the connections if the fault has become stored (fault no longer declared present).
Fit the 10-track test adapter (Elé. 1617) to the rotary switch at point C2 (tracks 9 and 10).
The CLIP or XRBAG tool must be used for checking resistance on cable A.
If the value obtained is incorrect, replace the rotary switch beneath the steering wheel.
Reconnect the rotary switch under the steering wheel, disconnect the computer and check the connections of
the 22-track (tracks 4 and 15) connector.
Fit the 22-track test adapter (Elé. 1685).
The CLIP or XRBAG tool must be used to measure the resistance on adapter cable D.
If the value obtained is incorrect, the wiring is faulty between the computer and the rotary switch connector
(C0/C2). 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 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 driver's front airbag if it has been replaced (tool Elé. 1287).
ACU4 Vdiag04 J84 1.0

AIRBAG - SEAT BELT PRETENSIONERS
Fault finding - Interpretation of faults
88C-42
88C
V3 MR-372-J84-88C000$071.mif
AIRBAG ACU4
VDIAG No.: 04
DF071
CONTINUED
CC.1 - CC.0
NOTESNone.
Lock the computer using the command on the diagnostic tool.
Switch off the ignition and unclip the driver's frontal airbag.
Check the condition and correct connection of the trigger lines.
Fit the 10-track test adapter to the rotary switch at point C2 (tracks 9 and 10).
The CLIP or XRBAG tools must be used to measure the appropriate insulation for the type of fault on cable A
(driver's front airbag connected).
If the value obtained is incorrect, replace the rotary switch beneath the steering wheel.
Reconnect the rotary switch under the steering wheel, disconnect the computer and check the connector
connections (tracks 4 and 15).
Fit the 22-track test adapter (Elé. 1685).
The CLIP or XRBAG tool must be used to measure the appropriate insulation for the type of fault on adapter
cable D.
If the value obtained is incorrect, the wiring is faulty between the computer and the rotary switch connector
(C0/C2). 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 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 driver's front airbag if it has been replaced (tool Elé. 1287).
ACU4 Vdiag04 J84 1.0

AIRBAG - SEAT BELT PRETENSIONERS
Fault finding - Interpretation of faults
88C-43
88C
V3 MR-372-J84-88C000$071.mif
AIRBAG ACU4
VDIAG No.: 04
DF072
PRESENT
DRIVER'S FRONT AIRBAG CIRCUIT 1
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 modify the computer configuration.
Special notes: never carry out measuring operations on trigger lines using any tool
other than CLIP or XRBAG.
Use the 22-track adapter (Elé. 1685) when working on the computer connector.
CO - CC
NOTESNone.
Lock the computer using the command on the diagnostic tool.
Switch off the ignition and remove the driver's frontal airbag.
Check that it is correctly connected.
Disconnect the driver's front airbag and attach 2 dummy ignition modules to the ignition module connectors.
Switch on the ignition and carry out a check using the diagnostic tool.
Replace the driver's frontal airbag if the fault becomes stored (fault no longer declared present).
With the ignition switched off, disconnect and reconnect the connector of the rotary contact beneath the
steering wheel.
Check the connections if the fault has become stored (fault no longer declared present).
Fit the 10-track test adapter (Elé. 1617) to the rotary switch at point C2 (tracks 6 and 7).
The CLIP or XRBAG tool must be used to measure the resistance on cable B.
If the value obtained is incorrect, replace the rotary switch beneath the steering wheel.
Reconnect the rotary switch under the steering wheel, disconnect the computer and check the connector
connections (tracks 3 and 14).
Fit the 22-track test adapter (Elé. 1685).
The CLIP or XRBAG tool must be used to measure the resistance on adapter cable C.
If the value obtained is incorrect, the wiring is faulty between the computer and the rotary switch connector
(C0/C2). 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 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 driver's front airbag if it has been replaced (tool Elé. 1287).
ACU4 Vdiag04 J84 1.0

AIRBAG - SEAT BELT PRETENSIONERS
Fault finding - Interpretation of faults
88C-44
88C
V3 MR-372-J84-88C000$071.mif
AIRBAG ACU4
VDIAG No.: 04
DF072
CONTINUED
CC.1 - CC.0
NOTESNone.
Lock the computer using the command on the diagnostic tool.
Switch off the ignition and unclip the driver's frontal airbag.
Check the condition and correct connection of the trigger lines.
Fit the 10-track test adapter (Elé. 1617) to the rotary switch at point C2 (tracks 6 and 7).
The CLIP or XRBAG tool must be used to measure the appropriate insulation for the type of fault on cable B
(driver's front airbag connected).
If the value obtained is incorrect, replace the rotary switch beneath the steering wheel.
Reconnect the rotary switch under the steering wheel, disconnect the computer and check the connector
connections (tracks 3 and 14).
Fit the 22-track test adapter (Elé. 1685).
The CLIP or XRBAG tool must be used to measure the appropriate insulation for the type of fault on adapter
cable C.
If the value obtained is incorrect, the wiring is faulty between the computer and the rotary switch connector
(C0/C2). 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 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 driver's front airbag if it has been replaced (tool Elé. 1287).
ACU4 Vdiag04 J84 1.0

AIRBAG - SEAT BELT PRETENSIONERS
Fault finding - Interpretation of faults
88C-45
88C
V3 MR-372-J84-88C000$071.mif
AIRBAG ACU4
VDIAG No.: 04
DF074
PRESENT
PASSENGER'S FRONT AIRBAG CIRCUIT 2
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 modify the computer configuration.
Special notes: never carry out measuring operations on trigger lines using any tool
other than CLIP or XRBAG.
Use the 22-track adapter (Elé. 1685) when working on the computer connector.
CO - CC
NOTESNone.
Lock the computer using the command on the diagnostic tool.
Switch off the ignition and make sure the passenger's frontal airbag is properly connected (access to
connectors through the glove compartment).
Disconnect the passenger’s front airbag ORANGE connector and attach a dummy ignition module to the
ignition module connector.
Switch on the ignition and carry out a check using the diagnostic tool.
Replace the airbag if the fault becomes stored (fault no longer declared present).
If the value is incorrect:
Disconnect the computer and check the connector connections (tracks 1 and 12).
Fit the 22-track test adapter (Elé. 1685).
The CLIP or XRBAG tool must be used to measure the resistance on adapter cable A.
If the value obtained is incorrect, the wiring is faulty between the computer and the passenger airbag
connectors (C0/C4). Replace the wiring if necessary.
If the value obtained is correct, check the computer connections again.
AFTER REPAIRReconnect the computer, 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. When replacing the airbag module, do not forget to reconnect the earth
on the new one.
Destroy the passenger's front airbag if it has been replaced (tool Elé. 1287).
ACU4 Vdiag04 J84 1.0

AIRBAG - SEAT BELT PRETENSIONERS
Fault finding - Interpretation of faults
88C-46
88C
V3 MR-372-J84-88C000$071.mif
AIRBAG ACU4
VDIAG No.: 04
DF074
CONTINUED
CC.1 - CC.0
NOTESNone.
Lock the computer using the command on the diagnostic tool.
Disconnect the computer and check the connector connections (tracks 1 and 12).
Fit the 22-track adapter Elé. 1685).
The CLIP or XRBAG tool must be used to measure the appropriate insulation for the type of fault on adapter
cable A.
If the value obtained is incorrect, the wiring is faulty between the computer and the passenger airbag
connectors (C0/C4).
Replace the wiring if necessary.
AFTER REPAIRReconnect the computer, 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. When replacing the airbag module, do not forget to reconnect the earth
on the new one.
Destroy the passenger's front airbag if it has been replaced (tool Elé. 1287).
ACU4 Vdiag04 J84 1.0

AIRBAG - SEAT BELT PRETENSIONERS
Fault finding - Interpretation of faults
88C-47
88C
V3 MR-372-J84-88C000$071.mif
AIRBAG ACU4
VDIAG No.: 04
DF075
PRESENT
PASSENGER FRONT AIRBAG CIRCUIT 1
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 modify the computer configuration.
Special notes: never carry out measuring operations on trigger lines using any tool
other than CLIP or XRBAG.
Use the 22-track adapter (Elé. 1685) when working on the computer connector.
CO - CC
NOTESNone.
Lock the computer using the command on the diagnostic tool.
Switch off the ignition and make sure the passenger's frontal airbag is properly connected (access to
connectors through the glove compartment).
Disconnect the passenger's front airbag BLUE connector and attach a dummy ignition module to the ignition
module connector.
Switch on the ignition and carry out a check using the diagnostic tool.
Replace the airbag if the fault becomes stored (fault no longer declared present).
If the value is incorrect:
Disconnect the computer and check the connector connections (tracks 2 and 13).
Fit the 22-track adapter Elé. 1685).
The CLIP or XRBAG tool must be used to measure the resistance on adapter cable B.
If the value obtained is incorrect, the wiring is faulty between the computer and the passenger airbag
connectors (C0/C4). Replace the wiring if necessary.
If the value obtained is correct, check the computer connections again.
AFTER REPAIRReconnect the computer, 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. When replacing the airbag module, do not forget to reconnect the earth
on the new one.
Destroy the passenger's front airbag if it has been replaced (tool Elé. 1287).
ACU4 Vdiag04 J84 1.0

AIRBAG - SEAT BELT PRETENSIONERS
Fault finding - Interpretation of faults
88C-48
88C
V3 MR-372-J84-88C000$071.mif
AIRBAG ACU4
VDIAG No.: 04
DF075
CONTINUED
CC.1 - CC.0
NOTESNone.
Lock the computer using the command on the diagnostic tool.
Disconnect the computer and check the connector connections (tracks 2 and 13).
Fit the 22-track adapter Elé. 1685).
The CLIP or XRBAG tool must be used to measure the appropriate insulation for the type of fault on adapter
cable B.
If the value obtained is incorrect, the wiring is faulty between the computer and the passenger airbag
connectors (C0/C4).
Replace the wiring if necessary.
AFTER REPAIRReconnect the computer, 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. When replacing the airbag module, do not forget to reconnect the earth
on the new one.
Destroy the passenger's front airbag if it has been replaced (tool Elé. 1287).
ACU4 Vdiag04 J84 1.0

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