DescriptionThe car may be fitted with an electronically-controlled safetysystem that sets off the front seat belt pretensioners and the driver'sAir Bag, passenger Air Bag and Side Bags in the case of frontaland/or side impact of a certain severity.In the case of a side impact of a certainseverity, the Side Bags and the Head Bag are activated (only onthe side of the car where the impact takes place).An electronic control unit manages the entiresystem by controlling all the components and activating the restraintsystems (pretensioners and airbags) as necessary.The control unit is located under the centreconsole and is rigidly fixed to the bodyshell: in this way the decelerationsensors located inside it are close to the centre of gravity and detectdeceleration for the entire vehicle accurately.There is an accelerometric sensor on thetwo front door pillars which, in the case of a side impact, transmitsa signal to the control unit.The early crash sensor which detects slightbumps is located at the front on the radiator crossmember.When a slight frontal impact is detected,the control unit sends control signals for stage 1 operation ofthe front modules and the pretensioners.When frontal impact of a certain severityis detected, the control unit sends control signals to set off thestage 2 front modules:In the case of a side impact of a certainseverity, the Side Bags and the Head Bag are activated (only onthe side of the car where the impact takes place).The two front Air Bag modules have two stageoperation: the first stage is for slight impacts and the secondstage for more severe impacts.The two stages have two separate chargeswhich 'fill' the bag 60% (first stage) and 40% (second stage).The driver's Air Bag module is located inthe centre of the steering wheel; it is fitted on a tilting platewhich enables the horn to be operated. The plate houses a metalcontainer which holds the folded airbag and a gas generator thatinflates the bag.A clock spring device allows the airbagmodule connection leads to turn with the steering wheel withoutthe risk of breakage.The passenger airbag is located on the facia,above the glove compartment, and is fastened directly to the carcrossmember via a special bracket.The passenger Air Bag can be manually deactivatedvia a special switch - which can be operated by a key - locatedat the end of the dashboard, passenger side and is only accessiblewith the door open.With the key in the OFF position, the controlunit also controls the operation of the special 'passenger Air Bagdisabled' warning light.The Side Bags are housed in the outer partof the front seats.The Head Bag consists of a curtain bag whichinflates and places itself between the head of the occupants andthe side windows. The Head Bag folded bag is located under the roofpanel, whilst the rear pillar houses the gas generator.The pretensioner is a device built intothe front seat belt reel.The control unit is self-diagnostic.it detects and memorizes any faultsit recognizes the various components and the type of faultit signals the onset of these faults via the special warninglightSystem activations following a particularlyserious impact are memorized by the control unit. For more details 2427449Characteristic of working principle5580Cair bag system . The system control unit supply line is protectedby a fuse located in the junction unit.768
767carefully observe the safety regulationswhen working on the airbag system. For more details [PR5580C]
Functional description The Air Bag system control unit M60 receives a supply controlledby the ignition (INT) at pin 8 of connector A from the line protectedby fuse F50 of the junction unit under the dashboard B2. Pin 16 of connector A is connected to thespecial earth C50. Early crash sensor K39 detects slightbumps and reports them to control unit M60 - pins 5 and 6 of connectorA of M60.When a frontal impact of a certain severity(depending on the control strategy, data from the above two sensorsand sensors incorporated in the control unit) is detected, the control unitsends control signals for stage 1 operation of the front modules: to driver's Air Bag Q9, via the steeringwheel clockspring D47 (from pins 21 and 22 of connector A of M60): to the passenger Air Bag Q11 (from pins23 and 24 of connector A of M60); to the pretensioners on the driver's side Q20(from pins 9 and 11 of connector B of M60) and the passenger sideQ21 (from pins 10 and 12 of connector B of M60);When frontal impact of a certainseverity is detected, the control unit sends control signals toset off the stage 2 front modules:to driver's Air Bag Q9, via the steering wheel clockspringD47 (from pins 17 and 18 of connector A of M60);to passenger side Air Bag Q11 (from pins 19 and 20of connector A of M60); A signal from passenger Air Bag disablingswitch H75 reaches pin 4 of connector A of M60, supplied by pin10 of connector A of M60 The side impact detection sensors K66(driver's side) and K67 (passenger side) send signals to pins 9and 10, respectively of connector B of the control unit M60.When side impact of a certain severity(dependent on the software setting) is detected, the control unitsends control signals to set off the modules:to driver's side front Air Bag Q30 (from pins 23 and24 of connector B of M60);to passenger side front Air Bag Q31 (from pins 21 and22 of connector B of M60);to the driver's Head Bag Q40 (from pins 17 and 18 ofconnector B of M60);to the passenger Head Bag Q41 (from pins 19 and 20of connector B of M60). The seat structure that houses the sidebags is connected to earth C50 . When the system self-diagnostic functiondetects a fault or an impact is detected, control unit M60 sendsa signal -from pin 15 of connector A - to the Air Bag faulty warninglight located in the instrument panel E50. ; pin 11 of connectorA of M60 sends the signal for the 'passenger disabling' warninglight. Self-diagnostic data can be read by connectingthe unit to connector C of Body Computer M1 - pin 3: it arrivesvia the special diagnostic line from pin 7 of connector A of M60
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Open the bonnet lid.1. Release the retainers (1a) and remove the cover (1b).2044997
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting212429579-7040A30Left instrument panellower TRIM - R.R.1. Disconnect the electrical connections (1a, 1b, 1c, 1d, 1e, 1f).2. Undo the left-threaded bolt securing the facia trim mount beam.3. Undo the bolts securing the body computer/junction unit.4. Move facia trim (4a) slightly and move body computer/junctionunit (4b) downwards.5. Disconnect the electrical connections (5a, 5b, 5c).6. Recover the body computer/junction unit.2045005
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Disconnect electronic control unit electrical connections (1a),(1b), (1c).2. Undo the bolts.3. Recover the control unit2045007
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Disconnect electronic control unit electrical connections (1a),(1b), (1c).2. Undo the bolts.3. Recover the control unit2045008
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Open the bonnet lid.Ensure the battery is disconnected.1. Disconnect the electrical connection for the sensor.2. Undo the nut.3. Recover the sensor.2052933
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Move the seat to a suitableposition.1. Remove the cover.2. Release the inner retainers (2a) for the knob (2b) from the housings(2c).2052978
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting212429610-7045A24squab knob - r rMove the seat to a suitable position.1. Undo the bolts.2. Remove the shield.2052981
7045A48
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Raise the lever (1a) and undo the bolt (1b). 2052982
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Move the seat to a suitableposition.1. Remove the cover.2. Undo the bolts.3. Remove the shield.2052984
7045A60
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting212429607-7045A13front seat with sidebag r rCheck the seat is in fully raised position.1. Fit tool (1a) to the gas spring (1b) as shown in the figure.2. Tighten up tool nut (2a) (to compress the gas spring) until gasspring pin (2b) disengages from the seat (2c) in the tube. 7697683. Turn the tool and gas spring assembly as far as strictly necessary,then unscrew the tool nut until the gas spring withdraws fully. 7682052985
7045A64
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting212429610-7045A24squab knob - r r2429613-7045A44seat interior guard - r r1. Disconnect the connection for the rod.2. Disconnect the end of the outer casing.3. Disconnect the end of the cable.4. Remove the rod (4a) releasing it from the eyelet (4b).2052987
7045A67
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Only for inner guide Disconnect the end of the memory controlcable.2052989
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