Maserati GRANTURISMO MC Service Manual
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Maserati GRANTURISMO MC Service Manual

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SERVICE MANUAL

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Summary of Contents for Maserati GRANTURISMO MC

  • Page 1 SERVICE MANUAL...
  • Page 2 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL Index 1. Contacts 2. Introduction 3. Maintenance Check List 4. Fluids and Lubricants 5. Dimensions and Weight 6. Engine 6.2 Maintenance Procedures (engine) 7. Transmission 7.2 Clutch 7.3 Maintenance Procedures (gearbox) 8. Brakes 9. Setup 11.
  • Page 3 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 1. Contacts 1.1. Manufacturer Company name: Maserati S.p.A. Address: Viale Ciro Menotti, 322 41121 Modena (MO) ITALY 1.2. Sales / Marketing Name: Roberto Bozzi Address: Viale Ciro Menotti, 322 41121 Modena (MO) ITALY Telephone:...
  • Page 4 2. Introduction This manual is intended as a general introduction to some specific maintenance procedure of the Maserati GranTurismo MC Trofeo race car. The destination use is for experienced technicians, familiar with the mechanical checks required by a race car.
  • Page 5 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL Recommended Check Description Notes replacement Notes Interval frequency Suspension and Steering Replace in case CV joints Suspension Joints 500 km of excessive inspection freeplay Replace in case Suspension Arms +Tie 500 km of excessive...
  • Page 6 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL Recommended Check Description Notes replacement Notes Interval frequency 5000 km (2000 km if Check piston Send to Brembo Calipers used on 10000 km seals for servicing severe tracks) Visual Flexible brake lines inspection of...
  • Page 7 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 4. Fluids & lubricants Application Brand Type Specifications Replace interval GM Allison C-4 Power Steering Shell Donax TM ZF TE ML 5000 km, check level every 1000 km Fluid 09/12 BS 6580 Engine Coolant...
  • Page 8 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 5. Dimensions and Weight 5.1. Dimensions Description Rules Tolerance Design (2016) Overall length Homol. Form. ± 5 mm 4991 Overall width Homol. Form. ± 1 % 2096 Overall body width front wheel centerline Homol. Form.
  • Page 9 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 6. Engine 6.1. Engine specification Engine Spec: Engine code: M145 Engine type: V8 90° Displacement: 4692 cc 4 valves per cylinder. Wet sump / One Volumetric oil pump. 1 throttle, drive by wire control.

  • Page 10: Maintenance Procedures

    MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL Electronic devices Engine ECU: Bosch Motronic ME 7.1.1. Gearbox ECU: Magneti Marelli CFC 301. Electronic gear box shifting control with two manual paddles at the wheel (gear up by right paddle, gear down by left paddle).
  • Page 11 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL Remove and clean the flexible stick Introduce the flexible stick into the hollow cylinder. Ver 1.0 2/16...
  • Page 12 Remove the flexible stick an keep it in the flat position in order to make a visual check. The nominal oil level recommend by Maserati is 11.0 Liters See below the reference...
  • Page 13 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 6.2.3. Engine auxiliary belt and water pump belt (check and replacement). Follow this procedure every time you check or replace the engine auxiliary belt or the water pump belt. Engine Auxiliary belt (only check): The procedure should be done only with the engine stopped and completely cool (Engine Water temperature ≤...
  • Page 14 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL Target values reported in the table below Adjust if Working range Adjust if A< 75 (Hz) 78 (Hz)<A<110 (Hz) A>115 (Hz) The tension should be adjusted only with an accurate setting of the stretcher.
  • Page 15 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 7. Transmission 7.1. Gearbox The car is equipped with a 6 gear + reverse gearbox, with electro-hydraulic control. 7.1.1. Transmission Ratios The transmission ratios are fixed and are shown in the following table. Input...
  • Page 16 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL Gear Ratios MC145 Granturismo M C Titoli 8000 7500 68.3 107.0 152.9 200.0 242.9 70.7 110.8 158.3 207.1 251.5 37 / 28 37 / 28 37 / 28 37 / 28 37 / 28...
  • Page 17 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 7.1.2. Oil level check procedure The oil level of the gearbox may be checked through the specific inspection hole, shown in the following pictures. Unscrew and remove the cap. Check that the oil level reaches the inspection hole, with the car on a flat surface.
  • Page 18 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 7.2. Clutch 7.2.1. Clutch Replacement Procedure To access the clutch, remove the complete clutch housing, together with the torque tube and the transmission shaft. Loosen the clutch retaining screws. Rotate the engine flywheel manually, bringing the mark on the flywheel...
  • Page 19 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL If fitting a new clutch disk, its maximum unbalance point must be positioned at 180° with respect to the maximum unbalance point of the flywheel. Reinstall the complete housing with the torque tube and the transmission shaft.
  • Page 20 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 7.3.2. Air bleed procedure on the clutch actuator system. Follow this procedure every time the clutch is replaced or the high pressure quick connect of the clutch actuator system is disconnected (first picture below).
  • Page 21 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL Open the power unit cap tank and refill the tank of oil Connect to the OBD connector the “Diagnosis tool” Turn ON the car “MAIN” switch. Turn ON the ignition switch. Launch on the PC the Waycon diagnostic software. You can see below the icon of the software Ver 1.0 2/16...
  • Page 22 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL Click on the green button Click on the “1” Grey Button “Esecuzione diagnosi” Ver 1.0 2/16...
  • Page 23 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL Click on Start Button Click on Start Button Ver 1.0 2/16...
  • Page 24 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL Select the line “Spurgo attuatore frizione” and click Start button. Ver 1.0 2/16...
  • Page 25 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL Before starting with the activation procedure, the PC user must advise the mechanic positioned under the car that he’s about to start the procedure. Click “OK” button, when the pump will start running, the mechanic has to open the nipple to allow the air bleeding and then close the nipple when the actuator pump is still running.
  • Page 26 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 7.3.3. Self setting gearbox procedure. Follow this procedure every time you replace the clutch, the gearbox or the gearbox TCU Connect the Diagnosis tool to the OBD connector Turn ON the car “MAIN” switch.
  • Page 27 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL Click on the green button Click on the “1” Grey Button “Esecuzione diagnosi” Ver 1.0 2/16...
  • Page 28 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL Click the Start Button Click the Start Button again Ver 1.0 2/16...
  • Page 29 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL Select the line “AUTOAPPRENDIMENTO DEIS” or “DEIS SELF LEARNING” (eng version) and click on Start. Click Ok. The procedure will take 4 to 8 minutes. If the procedure time is over 12/14 minutes, it need to be aborted and repeated again.
  • Page 30 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL Select AUTOAPPRENDIMENTO or “SELF LEARNING” (eng version) and click on Start. Click Ok. After 2 sec, the gearbox engages all gears automatically. It’s recommended to slightly move back and forth the car in order to help the gearbox in the engagement of gears.
  • Page 31 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL The third part of the self setting will be “AUTOAPPRENDIMENTO CAMBIATA VELOCE” or “FAST SHIFT SELF LEARNING” (eng version) Select “AUTOAPPRENDIMENTO CAMBIATA VELOCE” or “FAST SHIFT SELF LEARNING” (Eng version). Ver 1.0 2/16...
  • Page 32 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL Click Ok. After 2 sec the gearbox starts to engage all gears automatically. At the end of this procedure: Turn OFF the ignition switch. Turn OFF the car “MAIN” switch. Wait minimum 20 sec Turn ON the car “MAIN”...
  • Page 33 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 8. Brakes 8.1. Calipers The car is equipped with Brembo racing calipers. Do not use solvents or chemicals to clean the brake calipers, but water and soap. Chemical aggression/corrosion may result in permanent damage to the pistons and/or the seals, with consequent fluid leakage and/or air penetration.
  • Page 34 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 8.3. Brake Pads The car is equipped with the following brake pads (RB170) Maserati Brembo Recommended Thickness Part Number Part Number wear (min. thk.) Front 259260 B24.25.170 25 mm < 15 mm (10 mm)
  • Page 35 SERVICE MANUAL 8.4. Pedal box with balance bar The GranTurismo MC is equipped with a racing specific pedal box with two master cylinders and a balance bar. The standard brake balance is set to 50 bar front/40 bar rear, easy adjustable by looking at the pressure values displayed on the right side of the dashboard, when pushing on the brake pedal.
  • Page 36 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 8.4.2. Brake Fluid Tanks The brake fluid tanks are installed in the engine compartment. The heat protection shield shown in the picture is recommended. 8.4.3. Balance Bar The balance bar should be adjusted following the attached drawing: The values written in red have been changed from the original specification from the manufacturer.
  • Page 37 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL Important note: adjust the pushrods of the master cylinders so that the balance bar is perpendicular to the pushrods under maximum load. The system is then square. It is not important that the system is square when released, but it has to be under load.
  • Page 38 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 9. Setup 9.1. Standard Setup (Ref. Trofeo car 2015 spec) Setup Sheet Event Driver Circuit Chassis Date Engine Fuel FRONT REAR Splitter 2014 (52 mm min ride height) Diffuser spec 2015 Ride Height (mm)

  • Page 39: Setup Adjustment

    MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 9.2. Setup Adjustment 9.2.1. Ride Height Adjustment Front Rear Adjustment Change Adjustment Change 1/6 TURN on shock ring 0.34 mm 1/6 TURN on shock ring 0.29 mm 1 TURN on shock ring 2.05 mm 1 TURN on shock ring 1.72 mm...
  • Page 40 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL the 0° being the position where the bolt head (and the stem) is fully out and 180° being the position where it is fully in. The camber angle values are theoretical values, but because of the manufacturing tolerances the actual values may differ up to ±0.25°.
  • Page 41 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL Camber [°] (decimal) Position Angle [°] Front Rear 0° -4.25 -3.75 45° -4.0 -3.5 60° -3.9 -3.4 75° -3.7 -3.2 90° -3.50 105° -3.3 -2.8 120° -3.1 -2.6 135° -3.0 -2.5 180° -2.75 -2.25...
  • Page 42 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 9.2.5. Toe Adjustment Steering link for the front and toe link for the rear are adjustable via a threaded sleeve to allow for toe adjustment. The standard setup values mentioned in the setup sheets are measured as a difference in Y position of the rear rim edge to the front rim edge of one wheel.
  • Page 43 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 9.3. Kinematics NOTE: the following charts of the theoretical kinematic behaviour of suspensions refer to the 2010/2011 Trofeo car specification, without the 25 mm spacers on the wheel hub. Positive wheel travel = bump.
  • Page 44 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 9.3.2. Camber vs Wheel Travel (Positive = Toe Out) Camber vs Wheel Travel Front -1,00 -1,50 -2,00 -2,50 -3,00 -3,50 -4,00 -4,50 Wheel Travel [mm] Camber vs Wheel Travel Rear -0,50 -1,00 -1,50 -2,00...
  • Page 45 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 9.3.3. Caster vs Wheel Travel Caster vs Wheel Travel Front 6,50 6,00 5,50 5,00 4,50 4,00 3,50 Wheel Travel [mm] 9.3.4. King Pin vs Wheel Travel King Pin vs Wheel Travel Front 17,50 17,00...
  • Page 46 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 9.3.5. Half-Track vs Wheel Travel Half-track vs Wheel Travel Front 806,8 806,4 806,0 805,6 805,2 804,8 804,4 804,0 803,6 803,2 802,8 802,4 802,0 Wheel Travel [mm] Half-track vs Wheel Travel Rear 791,4 791,2 791,0...
  • Page 47 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 9.3.6. Wheel / Spring Ratio vs Wheel Travel Wheel/Spring Ratio vs Wheel Travel Front -1,340 -1,350 -1,360 -1,370 -1,380 -1,390 -1,400 -1,410 Wheel Travel [mm] Wheel/Spring Ratio vs Wheel Travel Rear -1,130 -1,135 -1,140...
  • Page 48 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 9.3.7. Wheel / ARB Ratio vs Wheel Travel Wheel/ARB Ratio vs Wheel Travel Front 3,700 3,650 3,600 3,550 3,500 3,450 3,400 3,350 3,300 3,250 Wheel Travel [mm] Ver 1.0 2/16...
  • Page 49 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 9.3.8. Roll Centre Height vs Wheel Travel Roll Centre Height vs Wheel Travel Front -10,0 -20,0 -30,0 -40,0 -50,0 -60,0 -70,0 -80,0 -90,0 -100,0 Wheel Travel [mm] Roll Centre Height vs Wheel Travel Rear...
  • Page 50 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 9.3.9. Antidive vs Wheel Travel Antidive (kinematic) vs Wheel Travel Front 5,80 5,75 5,70 5,65 5,60 5,55 5,50 Wheel Travel [mm] Antidive (kinematic) vs Wheel Travel Rear -6,75 -6,80 -6,85 -6,90 -6,95 -7,00 -7,05...
  • Page 51 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL Antidive (dynamic) vs Wheel Travel Front 46,20% 46,00% 45,80% 45,60% 45,40% 45,20% 45,00% 44,80% 44,60% 44,40% Wheel Travel [mm] Antidive (dynamic) vs Wheel Travel Rear 24,40% 24,20% 24,00% 23,80% 23,60% 23,40% 23,20% Wheel Travel [mm]...
  • Page 52 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 9.3.10. Antisquat vs Wheel Travel Antisquat (kinematic) vs Wheel Travel Rear -5,50 -5,55 -5,60 -5,65 -5,70 -5,75 -5,80 -5,85 -5,90 -5,95 -6,00 Wheel Travel [mm] Antisquat (dynamic) vs Wheel Travel Rear 68,00% 67,50% 67,00%...
  • Page 53 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 9.4. Springs The car is equipped with the standard springs mentioned in the standard setup sheet (see 9.1 Standard Setup). The available springs are described in the table below. 9.4.1. Front Suspension Springs Ø...
  • Page 54 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 9.4.3. Spring Ring Adjustment In the following table the different spring length for different loads are calculated in order to obtain the standard ride height. The ring adjustment column describes the adjustment to be done (either mm or ring turns) changing the spring from stiffer to softer, with positive values meaning going up.
  • Page 55 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 9.5. Dampers The car is equipped with non-adjustable dampers, as standard spec. Refer to 2016 GT4 Homologation sheet for optional adjustable shocks Maserati GranTurismo MC - Trofeo - Front - MAS2 5500 4885 5000 4475...
  • Page 56 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL Maserati GranTurismo MC Trofeo - Rear - MAS3 4500 4070 4000 3705 3500 3245 3000 2500 2000 bump damping force [N] rebound 1500 1260 1000 -130 -310 -500 -1000 -1255 -1500 -1630 -2000 -1865...
  • Page 57 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 9.5.1. Bump Stop 00 1748 060 000 displacement force [mm] 4000 00 1748 060 000 4500 4000 3500 3000 2500 2000 1500 1000 displacement [mm] # measurement of characteristic without consideration of hysteresis (average value)
  • Page 58 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 8.5.2. Packers In addition to the bump stop, the car is running with the following packers: -Front 15 mm totally (12+3), see the picture below. -Rear 10 mm, see the picture below. It’s recommended to have all packers installed, in order to avoid any contact of tyres with the wheel-archs on the chassis, in case of strong bumping.
  • Page 59 SERVICE MANUAL 9.6. Anti Roll Bar 9.6.1. Front Anti Roll Bar Only one anti roll bar is available, Maserati P/N 239268. It is a Ø26 outside diameter, Ø17.6 inside diameter hollow bar. 9.6.2. Rear Anti Roll Bar The standard Trofeo spec rear antiroll bar is Ø25 x 1,5 mm.

  • Page 60: Steering Rack

    MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 10. Steering system 10.1. Steering rack The car is equipped with a hydraulic power assisted steering rack. The power assistance is electronically controlled speed dependent. The control characteristic cannot be modified, but the electro-valve may be disconnected, obtaining a power assistance locked to its minimum value (heavier steering, better feedback from the road).
  • Page 61 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 11. Suspensions 11.1. Tightening torques Tighteni Check Torque Front suspension part Part N. Thread Class Torque Lower Arm to Hub Carrier 247308 M14x1.5 Adjustment Nut Lower Arm to Hub Carrier 245240 M14x1.5 Fastening Nut...
  • Page 62 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL Tighteni Check Torque Rear suspension part Part N. Thread Class Torque Lower Arm to Hub Carrier 247308 M14x1.5 Adjustment Nut Lower Arm to Hub Carrier 245240 M14x1.5 Fastening Nut Upper Arm to Hub Carrier 247308 M14x1.5...
  • Page 63 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL Wheel Nut 252544 M14x1.5 11.2. Suspension Assembly When checking and / or replacing suspension parts or when cleaning and lubricating the suspension joints, the disassembly of the suspension is needed. Following the procedure below to reassemble the parts correctly.
  • Page 64 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL Insert spacers on the other joint on both sides, to fill the clearance, as shown in the photos below. Assemble the nuts with medium strength (blue) thread locker. Tighten with the specified torque. Check that the suspension assembly moves freely, by hand.
  • Page 65 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL Insert spacers on the other joint on both sides, to fill the clearance, as shown in the photos below. Assemble the nuts with medium strength (blue) thread locker. Tighten with the specified torque. Check that the suspension assembly moves freely, by hand.
  • Page 66 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 11.3. Hub carrier assembly Follow the procedure below to assemble the suspension arms to the hub carriers. 11.3.1. Front Hub Carrier Put the upper arm in its seat on the hub carrier. Fit the washer and screw on an adjustment nut to be used to fit the tapered coupling of the arm in the bushing on the hub carrier.
  • Page 67 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL Fit a socket wrench in the hexagonal seat on the arm threaded pin. Holding the threaded pin still, tighten the adjustment nut a to a torque of 63 Nm. Fully unscrew the adjustment nut and fit a new arm fastening nut on the threaded pin.
  • Page 68 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 11.3.2. Rear Hub Carrier Install the rear tie rod on the rear hub carrier, following the scheme below Fit the upper arm in its seat on the hub carrier. Fit the washer and screw on an adjustment nut to be used to fit the tapered coupling of the arm in the bushing on the hub carrier.
  • Page 69 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL Fit a socket wrench in the hexagonal seat on the threaded pin of the arm. Holding the threaded pin still, tighten the adjustment nut a to a torque of 63 Nm. Fully unscrew the adjustment nut and fit a new arm fastening nut on the threaded pin.
  • Page 70 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL Fully unscrew the adjustment nut and fit a new arm fastening nut on the threaded pin Tighten the fastening nut to a torque of 63 Nm. 11.3.3. Wheel spacers The car is equipped with wheel spacers to increase the track, with the same thickness (25mm) but with a different tolerance of the central hole.
  • Page 71 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 11.3.4. Lower front subframe engine support plate. The mechanical stress caused by the continuous vibration of the engine may cause some cracking of the engine support housing on the lower front subframe. To avoid the replacement of the entire subframe, install a specific plate on both sides, as shown below.
  • Page 72 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL Ver 1.0 2/16...
  • Page 73 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 12. Wheels 12.1. Wheel Rims Maserati P/N Width Diameter Offset Application 249962 11” 18” 39 mm Front 252149 13” 18” 41 mm Rear 12.2. Tyres The following tyres have been successfully tested. The tyres used in the Trofeo series are Pirelli.
  • Page 74 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 13. Cockpit 13.1. Steering wheel commands Function of the control switch Function of the control switch Label Label gear down shift paddle gear up shift paddle flash button pit limiter button reverse gear button radio (PTT) button Ver 1.0 2/16...
  • Page 75 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 13.2. Central console commands Function of the control switch Function of the control switch Label Label starter button (press always firmly) windscreen wiper ignition switch cockpit cooling fan (not working) rain light switch lights switch...
  • Page 76 SERVICE MANUAL 13.3. Dashboard The Car is equipped with a high brightness TFT dashboard. When turning on the “IGNITION” switch, the Maserati Logo remains few seconds on the screen, before changing to the standard screen shown below: Ver 1.0 2/16...
  • Page 77 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL Item Description Label RPM bar graph Engine speed in graphic mode GEAR Gear engaged SPEED Car speed expressed in Km/h TWATER Engine coolant temperature expressed in °C Fuel consumption expressed in kg (density assumed FUEL 0.75 kg/l)
  • Page 78 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL To reset the best lap time, e.g. when moving to a different circuit, simply press the lower right button on the dashboard. Press the Right Button to reset the BEST LAP Ver 1.0 2/16...
  • Page 79 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 13.3.1. Alarm screen & warning lights If the dashboard screen turns in one of the following mode, slow down the car immediately, drive it in the closest safe area and switch off the engine.
  • Page 80 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL Element Description Function: windscreen heater status indication Mode: ON when W/S heater is ON WINDSCREEN HEATER light Note: the W/S cannot be activated if the engine is not running Function: gearbox failure warning GEARBOX FAILURE light...
  • Page 81 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 13.4. Rolling rest procedure In case of “Car’s spin” or in case of “Gearbox malfunction” during the track session, the Driver can apply the following procedure to reset the system (applicable also while moving): Turn the IGNITION SWITCH to OFF (down), by using the red safety lock;...
  • Page 82 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 14. Fuel system 14.1. Fuel tank The fuel tank is located in the luggage compartment. It is a FIA Standard FT3 – 1999 Homologated (SFT 41076) rubber bladder, protected by a carbon-composite rigid, crushable structure.
  • Page 83 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 14.2. Fuel Pumps There are 2 fuel pumps connected in parallel and supplying a single fuel line. The fuel pumps are located inside the fuel tank. No fuel nourice and no transfer pumps are present.
  • Page 84 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 14.3. Fuel level The car is not equipped with a fuel gauge. The measurement of the fuel consumption is based on the ECU fuel injectors’ timing calculation, displayed on the dashboard and available in the data acquisition system.
  • Page 85 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL Weigh accurately the fuel taken out. Be sure to empty the hose in the same canister before weighing. NOTE Before the start of a track event, the safety foam inside the tank might be dry.
  • Page 86 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 14.6. Quick Refuelling optional system A quick refuelling system is available as optional part, suitable for endurance racing. The system is applicable on the standard equipment. Ver 1.0 2/16...
  • Page 87 For a more detailed overview of the wiring diagrams and the electric layout of the car, as well as the use of the diagnosis tool and relevant procedures / software, refer to the specific manual provided by Waycon and released by Maserati. The following information are just a a quick introduction and it’s recommended to reconfirm the information with those reported in the dedicated manual.
  • Page 88 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 15.2. Main Breaker Relay The main breaker relay (Kissling), located in the cockpit, disconnects the battery from all the electrical power devices, but it does not disconnect the alternator (and the starter motor supply) from the battery. In this way the main breaker switch and the emergency breaker switch will be able to kill the engine if still running.
  • Page 89 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL The main breaker relay includes a diode. If connected in reverse polarity the diode will blow. The right connection is shown in the photos below. Ver 1.0 2/16...
  • Page 90 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 15.3. Sensors kit installation and configuration The upgrade kit of sensors installed since the MY11 is made of: Nr. 1 CAN Steering Angle Sensor [p/n: 188171] Nr. 1 CAN Accelerometer + Gyro [p/n: 206070] Nr.
  • Page 91 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL OUT CANbox connection IN CANbox connection (to Vehicle loom) (from Sensor Wire) Accelerometer + Gyro CAN connector Accelerometer and Gyro connector CANbox I/O connector Need to connect it: - To CANbox - To Vehicle loom...
  • Page 92 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL Idrostop: new BLS (Brake Light Switch) for N/A signal Location for Front Connection: sensor and voltage regulators Ver 1.0 2/16...
  • Page 93 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL Front Connection: sensor and voltage regulators Rear Connection: pressure sensor Ver 1.0 2/16...
  • Page 94 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL Rear Connection: pressure sensor Ver 1.0 2/16...
  • Page 95 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL 15.4. CAN connector It is possible to connect a CAN data logger by using directly the free connectors on the vehicle. Vehicle connector 40 way plastic join connector Pin 3A – CAN_High (white wire)
  • Page 96 SERVICE MANUAL Download / Configuration cable 6 way military join connector Maserati Ethernet Data Cable (w/o CAN connection) p/n: 232816 Connector X301 (Cod. Souriau: 851 06R 10-6 P 50-66) Pin A – Ethernet TX Positive Pin B – Ethernet TX Negative Pin C –...
  • Page 97 Fuel draining hose + fuel pump connection harness 232816 Ethernet cable datalogger 264585 Transmitter 900026390 FUEL PUMP RING NUT TIGHTENING TOOL It’s recommended to have a 41 mm HEXAGONAL SOCKET (not provided by Maserati) to work on driveshafts and the hub preload screws.
  • Page 98 MASERATI GRANTURISMO MC TROFEO/GT4 SERVICE MANUAL...

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