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Maserati GranCabrio
Other passive safety features
Safety Components
The passive safety equipment of the GranCabrio further includes:
• Front seatbelts with pretensioners and standard load limiter to ensure greater retaining efficiency.
• Increased structural dimensions of the side sills (to reduce intrusion in case of collisions from the side)
• Newly designed rear bumper supports (further limits compartment deformation in case of collision from the rear).
• An innovative cast aluminium structural reinforcement in the windscreen pillars for optimal protection in case of roll over.
• Isofix fasteners at the rear for child seats, which provide excellent protection for child passengers
The passengers compartment itself has been designed to satisfy the highest safety standards See chapter 9 Body for more detailed information about the vehicle’s structure
Electrical Systems and Devices
8. Electrical Systems and Devices
GranCabrio Florence Diagram
The Florence diagram of the GranCabrio is almost identical to the diagram of the GranTurismo S Automatic It differs on the following points:
• Introduction of the roof control node (NCP = Nodo Capote) to operate the soft top system (see chapter 9, “Body” of this manual for more details).
• Elimination of the volumetric alarm ECU (CAV) due to the introduction of a new, more sophisticated alarm system (see next page)
(*) Note: available on request / depending on the market specification.
Electrical Systems and Devices
Immobilizer and anti-theft system
Security against theft is assured by an immobilizer operating with a transponder inserted in the ignition key and an antitheft system consisting of:
- anti-lifting sensor, and volumetric ultrasonic sensors
- perimeter protection
- siren under bonnet
- 3-button remote control with lock/unlock doors and boot open functions
The system has been calibrated to operate and guarantee compartment security whether the top is up or down
1 Alarm siren
2. Vehicle key
3. Key and lock set
4. Maserati code card
5 Button for exclusion microwave sensors and tilt sensor
6. Front right microwave sensor
7. Rear right microwave sensor
8. Front left microwave sensor
9 Rear left microwave sensor
10. Anti tilt sensor
11. Body Computer (system manager)
The GranCabrio model is a quipped with a new, sophisticated volumetric alarm system using four anti-intrusion sensors These sensors use high frequency micro-waves (MHz) instead of the ultrasonic waves (25-30KHz) applied by the single sensor system as used in the GranTurismo and Quattroporte models
This new system is designed and fine-tuned to guard the cabin space below the vehicle’s waist line, and is therefore able to operate in both roof closed and roof open conditions
Electrical Systems and Devices
Adaptive Light Control:
The already high effectiveness of the Maserati GranCabrio’s Bi-Xenon lights are enhanced by the swivel function which improves illumination of the carriageway and surrounding areas and hence improves driving safety while travelling at night on very winding routes.
The electronic low beam control unit captures the instantaneous information relating to steering and angle as well as driving speed and actuates special electric motors to rotate the light cones
Highlights:
• system activates at over 5 Km/h
• maximum headlight rotation on the inside of the curve is 15° and 7 5° on the outside (always half)
• from 90 Kph to 120 Km/h the rotation angle is reduced
• above 120 Km/h and in reverse, the system is not active for safety reasons
Parking sensors:
The significant size of the Maserati GranCabrio should not be cause for concern as the car is fitted with standard rear sensors built into the rear bumper which, combined with those fitted in the front (optional), assist when manoeuvring even in very tight spaces. The instrument panel shows the car surrounded by symbols indicating distances to obstacles (max/med/min). The symbols are lit up in 3 different colours according to the obstacle’s distance from the car: max-green, med-yellow, min-red; combined with acoustic warning signals
Cruise control:
When driving at a steady speed cruise control is particularly useful because it allows the set cruising speed to be maintained automatically without having to press the accelerator pedal
When the driver switches on the cruise control a special gearshift setting is automatically selected based on the slope of the road and calibrated to obtain the maximum comfort and to avoid unnecessary gearshifts.
Maserati Multi Media System
Electrical Systems and Devices
The info-telematic system on board the Maserati GranCabrio is derived from the new high-end telematic platform developed by Magneti Marelli
A 7" high-resolution colour TFT display in the centre of the dashboard allows viewing of the CD player, GPS navigation system (where cartography is available), radio and onboard computer (trip and car set-up information).
The system’s performance is enhanced by the use of a 30 GB automotive hard disk drive that can host the whole cartography and offer the juke-box function in place of the CD changer. The hard-disk drive, on the one hand, significantly reduces the journey calculation times, and on the other provides storage for about 180 hours of music, which can be copied directly from Audio CDs or downloaded in Mp3 file format through the USB port in the passenger side glove compartment
The system also allows you to use your own Mp3 player; in fact, most players on the market today can be connected through the USB port so that you can listen to your own music during the journey.
As far as the GPS navigation system is concerned, the large colour display and a 3D graphics processor offer navigation with a very attractive perspective view.
System control is easy and intuitive through the controls in the centre of the dashboard, while the most frequently used functions are accessed in complete safety through the buttons on the multi-function steering wheel; again from a safety standpoint, the audio system, navigation system and telephone (where fitted) can be operated without distracting the driver through a convenient voice command system
The "Text to Speech" voice synthesis system (artificial reproduction of the human voice) also contributes to user safety since it reads out SMS messages and TMC traffic information so that the driver is not distracted by having to look at the display.
The Multi Media System includes bluetooth technology which allows a cell-phone (made ready) to be connected The connection permits the user to handle phone calls (through loud speakers) and the phone book via the Multi Media System
Further, and specific for the GranCabrio model, the Multi Media System applies specific audio settings for hood open and hood closed conditions. Specific equalizing settings optimize the quality of the sound both for driving open and driving with the roof closed.
Electrical Systems and Devices
Bose Surround Sound
The system is available as an optional (std in USA and Canada).
To help reproduce music with both power and clarity, the Bose Surround Sound System features two separate bass sources The dual low-frequency sources are engineered to work with the entire surround sound system to faithfully reproduce music across a wide spectrum of frequencies
Conventional approaches to multiple bass sources can be problematic. If the speaker is located too close to the listener the sound can be overwhelming. If it is too far away the sound can lack fullness. Improper placement can also cause the multiple speakers to reproduce certain frequencies out of phase, effectively cancelling out the sound instead of strengthening it.
Working closely with the Maserati development team, Bose engineers used a detailed acoustic blueprint of the Maserati GranCabrio cabin to determine the proper speakers and mounting locations They include custom-engineered enclosure with two Nd® Richbass® woofers mounted between the rear seats and a Nd® Richbass® woofer in a customised bass enclosure in the front, each powered by a single two-state modulation amplifier.
The Nd Richbass woofer combines the lighter weight and power of a neodymium iron boron magnet with a design that enables it to produce the low-frequency output of a much larger, heavier speaker It is housed in a customised enclosure placed unobtrusively behind the passenger side foot well These specific speakers and locations were key to delivering low-frequency sound more evenly, providing more musical impact and preserving vehicle space
AudioPilot® Noise Compensation Circuitry:
The Bose Surround Sound System includes AudioPilot noise compensation circuitry, which features an algorithm customised for the acoustic profile of the Maserati GranCabrio cabin. It helps preserve the high-quality listening experience inside the vehicle by compensating for speed-related noise, as well as outside sound unrelated to vehicle speed The AudioPilot system provides a wide range of compensation quickly and can better differentiate between sustained noise and short transient noise caused by speed bumps and other abrupt changes in road surface This compensation is done automatically so that the perceived sound level and tonal balance remain consistent With this, the driver can focus on the road and enjoy a listening experience closer to what the musical artist intended
The Bose surround sound system in the Maserati GranCabrio is powered by a Bose digital amplifier that includes Centerpoint® and SurroundStage® signal processing circuitry, and eight channels of custom equalisation.
The Bose system allows the occupant to disable Surround Sound and Audiopilot functions directly from the MMS so as to enable a better listening experience in disturbed conditions
Electrical Systems and Devices
Bose Surround Sound System layout:
The system is fitted with twelve high-performance speakers and the following system electronics:
1 One 8cm (3 25-in) Twiddler® neodymium mid/high-range centrefill speaker in the middle of the instrument panel.
2. Two 3.6cm (1.5-in.) neodymium tweeters, one in each side-view mirror patch.
3 Two 1 65cm (6 5-in ) neodymium low/mid-range speakers, one in each door
4 One 13cm (5 25-in ) Nd® Richbass® woofer in a custom-engineered bass enclosure mounted behind the passenger side foot well and powered by a single two-state modulation amplifier.
5. Two 16.5cm (6.5-in.) neodymium low/mid-range speakers, one in each quarter panel.
6 Two 3 6cm (1 5-in ) tweeters, one in each rear panel
7 Two 11 5cm Nd® Richbass® woofers in a custom-engineered enclosure mounted between the rear seats, powered by a single two-state modulation amplifier mounted under the passenger seat.
8. Two-state modulation amplifier mounted under the passenger seat.
9 A Bose® digital amplifier mounted in the left side of the trunk Includes:
• Centerpoint® signal processing circuitry
• SurroundStage® signal processing circuitry
• AudioPilot® noise compensation technology
• 8 channels of custom equalisation
Electrical Systems and Devices
iPod dock
The Maserati GranCabrio can also be equipped with an iPod dock on request. This enables the occupants to listen to music by connecting the player to the dock in the glove compartment with an adapter cable and use its principal functions directly via the multimedia system (MMS). The iPod’s functions are displayed on the monitor at the centre of the dashboard in the iPod Mode Menu.
A/C system
The automatic dual-zone climate control maintains ideal conditions inside the cabin by automatically adjusting the interior temperature and the intensity of the ventilation in relation to outdoor temperature, sunlight intensity and air humidity
The fully electronic dashboard allows the driver and passenger to set their own preferred temperature separately between a minimum of 16°C and a maximum of 32°C, while the flow distribution also maintains the ideal climate in the back through two vents located on the centre tunnel
The system is fitted with an anti-fogging sensor: if the glass temperature drops below the "dew point" and causes the glass surfaces to mist up, this automatically operates to reduce the humidity content of the air.
In the Maserati GranCabrio, the A/C system has been fine tuned to offer maximum comfort both the top down and up; it is capable of detecting the condition of the car and automatically reprograms its air output to maintain the temperature
Settings
Its sound level has also been reduced to minimise its impact on occupant comfort, notwithstanding the increase in air delivery required when the top is down.
Electrical Systems and Devices
Specific electronic equipment
The following electronic equipment is new or has been redesigned for the GranCabrio model:
• Opening / closing function for the rear side windows:
The drivers door node (NPG) contains now two extra switches for the manual up /down-movement of the rear side windows.
Role of the drivers door node (NPG) regarding the rear windows:
• Acquisition of left side and right side rear window lifter controls from driver door switches
• Transmission on B-CAN of rear windows commands
Role of the roof node (NCP):
• Acquisition of left side and right side rear windows lifter signals from B-CAN
• Left side and right side rear window motor control through manual and automatic up/down
The rear window lifter function is active with key ON (+ 15) only.
During the cranking stage, any possible window movement in progress is stopped and not resumed at the end of the crank
During soft top movement, NCP will inhibit any window movement due to NPG commands
Note: it is not possible to operate the rear windows manually when there is a NCP failure
Electrical Systems and Devices
Left side and right side rear window motors are controlled in up only in manual mode and in down in automatic mode or manual, according to the following described logic: in manual mode the window starting and stopping is manually determined by the user by means of the control push button pressed for:
50 ms < Ta < 300 ms (short time) when the control is released, the motor stops In automatic mode the window starting is manually determined by the user by means of a control push button pressed for: Ta > 300 ms (long time)
• Rear interior lights in side panels:
The interior lights for the rear passengers compartment for the GranCabrio model are located in the side panels, underneath the arm rests.
They are activated by the Body Computer via an active low signal
• Redesigned roof console :
Electrical Systems and Devices
The GranCabrio model has a redesigned roof console. It contains the following items:
• TPMS calibration button
• Button for exclusion of the volumetric sensors and the inclination sensor of the alarm system
• Central interior light and spot lights with relative control buttons
• Microphone for mobile phone and voice control of the multi media system (NIT)
Note: unlike the GranTurismo and Quattroporte models, the roof console of the Grancabrio has no integrated CAV ECU (volumetric alarm sensor and inclination sensor). The push button for the exclusion of the new volumetric sensors and inclination sensor of the alarm system is connected to the Body Computer (NBC), who manages the alarm system
• 3°stop light integrated in the rear deck lining:
The 3° stop light for the GranCabrio has been redesigned The 3° stop light with chromatic effect has been integrated in the chrome rear deck lining, in order to offer an aesthetic and elegant solution both with roof open and with roof closed The 3°stop light is controlled by the NFR by means of a dedicated relay (like on the GranTurismo models).
