2011 RENAULT SCENIC Air Bag ACU4 - Seat Belt Pretensioners Workshop 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