DescriptionThe car is fitted with an electronically-controlled safety system which, in the case of a front-end or side crash activates the safety devices.The front protection system includes dual front air bags (driver and passenger) with dual stage activation, front seat belts with pretensioners and load restricters, a supplementary decentralized sensor for detecting impact and a manual switch for disabling the passenger Air Bag. The side protection system consists of two window bags, housed in the side members under the roof; there are also two side bags, available as an option, in the front seat.The front protection system adopts the new activation logic known as the Smart 2 Air Bag which is capable of automatically adapting the activation parameters depending on the seriousness of the impact.The driver and passenger Air Bags are the dual activation stage type: when the impact is medium, the electronic control unit only operates the first activation stage for the Air Bags, preventing the intake of energy not needed for the protection of the occupant.Conversely, for very serious impacts, the control unit activates both stages in order to absorb the increased kinetic energy of the occupant before the impact against the steering wheel or the dashboard.In addition, an additional ECS (Early Crash Sensor) located near the bonnet lid lock; assists the electronic control unit in anticipating the intervention of the Air Bags compared with a conventional system so that the activation stage is completed even before the occupant starts to move forward towards the steering wheel or the dashboard. In addition, this sensor detects underbody impacts or stresses for which the activation of the Air Bags is not necessary as there is no risk to the occupants.The control unit is located under the centre console and is rigidly fixed to the bodyshell: in this way the deceleration sensors located inside it are close to the centre of gravity and detect deceleration for the entire vehicle accurately.The two front Air Bag modules have two stage operation: the first stage is for slight impacts and the second stage for more severe impacts.The driver's Air Bag module is located at the centre of the steering wheel; it is fitted on a tilting plate which enables the horn to be operated. The plate houses a metal container which holds the folded air bag and a gas generator that inflates the bag. A clock spring device allows the air bag module connection leads to turn with the steering wheel without the risk of breakage. The passenger Air Bag module is located in the dashboard, and is fixed directly to the vehicle crossmember by means of a special bracket. The passenger Air Bag can be manually deactivated via a special switch - which can be operated by a key: it is locatedin the upper dashboard compartment, on the passenger side.With the key in the OFF position, the control unit also controls the operation of the special 'passenger Air Bag disabled' warning light.The Side Bag protects the chest area and, together with the door panels, guarantees protection for the critical areas of the body such as the ribs and the abdomen. Its position on the seat always guarantees maximum effectiveness, irrespective of the position of the seat even if the occupant is not seated correctly, as the dynamics of opening of the bag minimises the risk of damage to the body caused by the impact with the bodyshell.The Window Bags are activated together with the Side Bags and place themselves between the occupant and the vehicle preventing the occupant's head from coming into contact with sharp areas such as the windows, pillars, etc.Since it extends from the front pillar to the luggage compartment, the Window Bag protects both the front and rear passengers; The window bag system is optimum thanks to the extensive surface and its capacity to support itself even in the absence of support;The pretensioners are incorporated in the front seat belt reel. The same logic which controls the Air Bags controls the activation of the seat belt pretensioners.The pretensioners have the function of recovering any belt slack in order to keep the occupant against the backrest from the very start of the impact, reducing movement inside the passenger compartment.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 warning lightSystem activations following a particularly serious impact are memorized by the control unit. When the system self-diagnostic function detects a fault or an impact is detected the control unit sends a signal via the CAN for the Air Bag failure warning light located in instrument panel E50.Similarly, the passenger Air Bag disabled warning light and the seat belts not fastened warning light are lit up.: this warning light signals the failure of the driver to fasten their seat belt, coming on constantly from the key on; the warning light in the panel starts to flash and the buzzer in the instrument panel sounds intermittently if the speed of the vehicle exceeds 25 km/h or the distance travelled exceeds 500 m. For more details 2398713Characteristic of working principle5580Cair bag system . The system control unit supply line is protected by a fuse located in the junction unit.23
23carefully observe the safety regulations when working on the airbag system. For more details [PR5580C]
Functional description The Air Bag system control unit M60 receives a supply controlled by the ignition (INT) at pin 2 of connector A from the line protected by fuse F50 of the junction unit under the dashboard B2. Pin 1 of connector A is connected to the special earth C50. Early crash sensor K39 detects slight bumps and reports them to control unit M60 - pin 12 of connector A of M60.When a frontal impact of a certain severity (depending on the control strategy, data from the above two sensors and sensors incorporated in the control unit) is detected, the control unit sends control signals for stage 1 operation of the front modules:to driver's Air Bag Q9, via the steering wheel clockspring D47 (from pins 15 and 16 of connector A of M60):to the passenger airbag Q11 (from pins 13 and 14 of connector A of M60);to the pretensioners on the driver's side Q20 (from pins 23 and 24 of connector B of M60) and the passenger side Q21 (from pins 21 and 22 of connector B of M60);When frontal impact of a certain severity is detected, the control unit sends control signals to set off the stage 2 front modules:to driver's Air Bag Q9 , via the steering wheel clockspring D47 (from pins 19 and 20 of connector A of M60 ):to passenger side air bag Q11 (from pins 17 and 18 of connector A of M60 ): A signal from passenger Air Bag disabling switch H75 reaches pin 9 of connector A of M60. The side impact detection sensors K66 (driver's side) and K67 (passenger side) send signals to pins 2 and 1 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 unit sends control signals to set off the modules:to driver's side front Air Bag Q30 (from pins 19 and 20 of connector B of M60);to passenger side front Air Bag Q31 (from pins 17 and 18 of connector B of M60);to the driver's Head Bag Q40 (from pins 15 and 16 of connector B of M60);to the passenger Head Bag Q41 (from pins 13 and 14 of connector B of M60). The seat structure that houses the side bags is connected to earth C50 . The driver's seat belt switch I45 is connected to the control unit sending an earth signal to pin 10 of connector B of M60. The control unit M60 is connected, via the CAN line, to the Body Computer M1 and to the instrument panel E50. When the system self-diagnostic function detects a fault or an impact is detected, control unit M60 sends a signal , via the CAN, to the Air Bag failure warning light located in instrument panel E50 similarly for the passenger Air Bag disabled warning light and the seat belts not fastened warning light. Self-diagnostic data can be read by connecting to connector C of Body Computer M1: it receives data from the control unit M50 via the CAN.
<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).2050746
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting212400802-7040A37fuse box cover - r r1. Disconnect the electrical connections (1a, 1b, 1c, 1d, 1e, 1f).2. Undo the bracket retaining bolt.3. Slightly move the bracket (3a) for the dashboard trim and undothe bolt (3b).4. Undo the other bolts securing the body computer/junction unit.5. Slightly move the body computer/junction unit assembly.6. Disconnect the electrical connections (6a, 6b, 6c).7. Recover the body computer/junction unit.2050752
<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 unit.2050753
<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 unit.2050754
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Open the bonnet lid.Ensure the battery is disconnected.1. Undo the nut.2. Move the sensor (2a) and disconnect the electrical connection(2b).3. Recover the sensor.2050852
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Tilt the backrest of the seatto be removed forward to the end of its travel.1. Move the seat completely forwards.2. Raise the edge of mat (2a) and unscrew rear bolts (2b).2051139
7045A14
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting212400845-7045A10l/h or r/h front seat(one) - r+r1. Cut the airbag wiring retaining collars.2. Cut the seat belt connected wiring retaining collars.3. Undo the bolts.4. Remove the cushion assembly.2051144
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Lower the backrest forwardto the end of its travel.1. Disengage the retainers using the special tool.2. Remove the backrest (2a) by releasing the retainers (2b).2051147
7045A24
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Remove the cover (1a) by releasing the three retainers (1b).2. Undo the bolt.3. Remove the knob.2051148
7045A25
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Prise up the knob and release the inner retainer using the appropriatetool.2051149
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Raise the set to the end ofits travel using the adjustment lever.2400854-7045A43seat exterior guard - r r1. Undo the bolts.2. Released the toothed wheel (2a) from the toothed sector (2b)and remove the manual device (2c).3. Keep the bush.2051150
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Move the seat forward to theend of its travel.1. Remove the cover (1a) releasing the retainers (1b).2. Undo the bolts.3. Remove the seat height adjustment lever.2051153
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Move the guides (1a) backwards by operating the slide controllever (1b) until there is access to the rear bolts (1c) fixing theguides. 2. Undo the rear bolts (1c) and the front bolts (2a) fixing theguides. 3. Remove the guides and the slide control lever, then separatethem, releasing them from the retainers. 232051156
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting212400845-7045A10l/h or r/h front seat (one) - r+r1. Undo retainer (1a) and turn connector mount (1b).2. Release connection (2a) of the seat belt on warning light leadfrom mount (1b).3. Cut the cable retaining collars.2051227
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