Maserati Grandturismo Sport. Service Manual - part 12

6

184

Engine compartment relay 

Pos.

Type

Function

T02

Micro 20 A

Side markers

T03

Micro 20 A

Spot lights

T05

Micro 20 A

Stop light control relay

T06

Micro 20 A

Horns

T07

Maxi 50 A

I.E. Main relay

T08

Micro 20 A

Air conditioning/heating system compressor

T09

Micro 20 A

High beams

T10

-

Not used

T14

Micro 20 A

Fog lights (Not used)

T15

Maxi 50 A

1

st

 speed - radiator electric fan

T16

Maxi 50 A

2

nd

 speed - radiator electric fan

T17

-

Not used

T19

Micro 20 A

Ignition enable

T20

Micro 30 A

Ignition

T30

Maxi 50 A

Air pump

T31

Micro 30 A

Headlight washer pump

Engine compartment fuses

Pos.

Amp.

Color

System / Component

F01

Maxi 60 A

Blue

Fan 1 relay

F02

Maxi 30 A

Green

ABS valves

F03

Maxi 20 A

Yellow

T03 spot lights relay

F04

Maxi 40 A

Orange

ABS cylinder

F05

Maxi 40 A

Orange

A.C. Node

F06

Maxi 60 A

Blue

Fan 2 relay

F07

30 A

Green

T07 I.E. main relay

F08

7.5 A

Brown

T08 - Air conditioner compressor relay

6

185

Pos.

Amp.

Color

System / Component

F09

7.5 A

Brown

T05 stop light control relay

F10

15 A

Light blue

T06 horn relay

F11

10 A

Red

LH high-beam

F14

-

-

Not used

F15

15 A

Light blue

Alternator sensing

F16

10 A

Red

LH spot light

F17

10 A

Red

RH high-beam

F18

7.5 A

Brown

I.E. bank

F19

15 A

Light blue

T02 DRL lights relay

F20

-

-

Not used

F21

15 A

Light blue

T14 fog lights relay (Not used)

F22

-

-

Not used

F23

10 A

Red

ABS electronics

F24

10 A

Red

RH spot light

F30

30 A

Green

T20 ignition relay

F81

Maxi 50 A

Red

CPL2

F82

-

-

Not used

F83

Maxi 50 A

Red

Air pump relay

F84

20 A

Yellow

Ignition switch

F85

30 A

Green

Headlight washers

F87

-

-

Not used

F88

15 A

Light blue

Main injector/coil relay - cylinders 1-4

F89

15 A

Light blue

Main injector/coil relay - cylinders 5-8

F90

15 A

Light blue

Main I.E. relay, secondary connected devices

F91

10 A

Red

Main relay, I.E. ECU

F92

15 A

Light blue

Main relay, oxygen sensors

F93

7.5 A

Brown

Not used

F94

7.5 A

Brown

NCS

6

186

Pos.

Amp.

Color

System / Component

F95

7.5 A

Brown

CSG

F96

7.5 A

Brown

Alternator

F97

10 A

Red

I.E. ECU

F98

-

-

Not used

F99

-

-

Not used

F100

-

-

Not used

F101

-

-

Not used

F102

-

-

Not used

F103

-

-

Not used

F104

-

-

Not used

F105

-

-

Not used 

F106

-

-

Not used

F107

-

-

Not used

D

F-36

F-39

F-38

F-53

F-31

F-52

F-41

F-43

F-40

F-44

F-45

F-47

F-32

F-50

F-51

F-46

F-33

F-37

F-42

F-12

F-34

F-48

F-49

F-35

F-13

T01

T12

T11

T13

6

187

Fuses and relays in the 
passenger compartment, to the 
left of the steering wheel

To access the fuses/relays, lift the 
guard D.

The fuses/relays are housed in 2 
control boxes.

The list of fuses and relays is shown in 
the following pages. 

6

188

Relays in the passenger compartment, to the left of the steering wheel

Pos.

Type

Function

T01

Micro-relay 30A

Low beams

T11

Micro-relay 30A

Heated rear window

T12

Micro-relay 30A

Connected devices 1 (Controlled by INT/A Ignition switch)

T13

Maxi-relay 50A

Jumper 30/87

Fuses inside the passenger compartment, to the left of the steering wheel 

Pos.

Amp.

Color

System / Component

F12

15A

Light blue

Right-hand low beam

F13

15A

Light blue

Left-hand low beam

F31

7.5A

Brown

A/C unit., NBC (Body Computer Node), high beam relay

F32

10A

Red

Dome lights, step lights, CAV, driver- and passenger-side footwell lights, external 
mirror lights

F33

30A

Green

Driver’s seat (movement)

F34

30A

Green

Passenger’s seat (movement)

F35

7.5A

Brown

ACC, FN and LF relay coil

F36

10A

Red

NQS

F37

10A

Red

NQS (Instrument Panel Node), CPP, CPD

F38

15A

Light blue

Rear lid lock

F39

15A

Light blue

NIM (Inside Roof Node), NCL (Air conditioning and heating system node), EOBD 
socket, CSA (Alarm system siren ECU), CAV (Motion sensing alarm ECU), radio

F40

30A

Green

Heated rear window

F41

-

-

Not used

F42

-

-

Not used

F43

30A

Green

Windshield wiper/washer (Connected Devices Relay INT/A)

F44

20A

Yellow

Front and rear cigarette lighter (INT/A device relay) front seat heating (passenger 
side)

F45

-

-

Not used

6

189

Pos.

Amp.

Color

System / Component

F46

20A

Yellow

NPG/NPP Locks

F47

30A

Green

NPG (Driver’s door node)

F48

30A

Green

NPP (Passenger’s door node)

F49

7.5A 

Brown

NVO (Steering wheel node), CSG (Power steering ECU), CSP (Twilight/rain sensor 
ECU), NIM (Inside Roof Node), NCL, Radio, CEM, CRP, dome light molding, windshield 
wiper controls

F50

7.5A

Brown

Airbag system

F51

7.5A

Brown

NCA (Automatic Gearbox Node)

F52

15A

Light blue

Front seat heating (driver side) (INT/A device relay)

F53

10A

Red

Rear fog lights

F54

F63

F56

F62

F60

F78

F61

F65

F66

F80

F55

F57

F67

F69

F77

F79

F58

F68

F59

F64

F27

F26

F25

F53

F29

F28

T21

T22

T24

T34

T35

T32

T33

T23

T25

F

E

6

190

Relay/fuse boxes inside the 
luggage compartment

To access the fuses/relays, remove 
the cover E by undoing the retaining 
screws F.

There are 2 relay and fuse boxes.

To access the fuses and relays inside 
the control boxes, remove the covers 
by levering up the fastening tabs.

6

191

Relays inside the luggage compartment

Pos.

Type

Function

T21

-

Not used

T22

-

Not used

T23

Micro 20 A

Reverse gear relay

T24

Micro 20 A

Third stop relay

T25

Micro 20 A

Fuel tank door relay

T32

Micro 30 A

Key-Lock solenoid

T33

-

Not used

T34

Micro 30 A

Fuel pump 1

T35

Micro 30 A

Fuel pump 2

Fuses inside the luggage compartment

Pos.

Amp.

Color

System / Component

F25

-

-

Not used

F26

-

-

Not used

F27

-

-

Not used

F28

-

-

Not used

F29

-

-

Not used

F53

-

-

Not used

F54

30 A

Green

HI-Fi amplifier

F55

-

-

Not used

F56

10 A

Red

+30 NAG, Bose tuner 

F57

-

-

Not used

F58

7.5 A

Brown

RH Reverse from T23

F59

-

-

Not used

F60

7.5 A

Brown

NSP

F61

7.5 A

Brown

T24 third stop

F62

20A

Yellow

NCA

6

192

Pos.

Amp.

Color

System / Component

F63

15 A

Light blue

T25 fuel tank door relay

F64

-

-

Not used

F65

10 A

Red

Key-Lock solenoid

F66

20 A

Yellow

Fuel pumps

F67

-

-

Not used

F68

-

-

Not used

F69

-

-

Not used

F77

-

-

Not used

F78

20 A

Yellow

Power socket

F79

-

-

Not used

F80

25 A

White

Bass box

California Proposition 65 
Warning

THIS MOTOR VEHICLE CONTAINS 
CHEMICALS KNOWN TO THE 
STATE OF CALIFORNIA TO CAUSE 
CANCER, BIRTH DEFECTS OR OTHER 
REPRODUCTIVE HARM (see page 7)

6

193

If the battery is dead 

We recommend that you read the 
precautions contained in the section 
”Maintenance“ to prevent the battery 
from going dead and to help ensure 
its long life. 

Starting with an auxiliary 
battery

See the chapter ”Starting the engine“ 
in the section ”Using the vehicle”. 

WARNING: Under no circumstance 
should a stand alone battery be 
used for an emergency start-up: you 
could damage the electronic systems, 
particularly the ECUs, which control 
the ignition and fuel supply functions.

Recharging the battery

You are advised to recharge the 
battery slowly and at a low amperage 
for about 24 hours. 
Follow the instructions below: 
1)  Deactivate the electronic alarm 

using the remote key control.

2)  Open the luggage compartment 

(see on page 94) and remove 
the panel on the floor, then 
disconnect the electric system 
terminals from the battery poles.

WARNING: First disconnect the 
negative pole terminal (–) then the 
positive pole one (+).

3)  Connect the battery charger 

cables to the battery poles.

WARNING: The battery is secured 
in the vehicle by means of a metal 
bracket, therefore, be extremely 
careful not to let the battery charger 
clips come into contact with it.

4)  Turn on the battery charger. 
5)  When the battery is recharged, 

turn off the battery charger 
before disconnecting it from the 
battery.

6)  Reconnect the terminals to the 

battery poles, observing the 
polarity.

WARNING: First reconnect the positive 
pole terminal (+) and then the 
negative pole one (–).

WARNING: Before reconnecting the 
battery terminals, check that the key 
has been removed from the ignition 
switch or at least that it is in STOP 
(OFF) position.

The fluid contained in 
the battery is poisonous 
and corrosive. Avoid 

contact with the skin and eyes. 
The battery recharging procedure 
must be performed in a ventilated 
environment away from open flames 
or possible sources of sparks: Risk of 
explosion and fire! 

Battery posts, terminals and 
related accessories contain 
lead and lead compounds. 

Wash your hands after handling.

  ~12 in (~30 cm)

 ~8 in (~20 cm)

6

194

If you have to jack up the 
vehicle 

Using the jack

See the chapter “If a tire is 
punctured”, in this section.

The jack can be used only to 
replace the wheels. Under 
no circumstance should it be 

used for repairs under the vehicle.

15°

15°

15°

15°

6

195

If you have to tow the 
vehicle 

If you need to tow the 
vehicle, observe the following 
recommendations:
-  if possible, have the vehicle 

transported on a vehicle equipped 
with loading platform and specific 
for roadside assistance and 
recovery. 

If this is not possible:
-  tow the vehicle for a distance of 

less than 62 mi (100 km) at a speed 
below 37 mph (60 km/h). 

Tow the vehicle using the towing 
hook found in the toolkit. Screw the 
towing hook down tightly in its seat, 
on the lower, right-hand side of the 
front bumper.

In order to tow the vehicle, turn the 
key to MAR (ON) and engage Neutral 
by moving the gearshift lever to N.
Should the EPB be applied, you must 
disengage it (see page 163).
The maximum angle of the towing 
cable, both horizontal and vertical 
shall be ±15°.

Do not extract the key, as 
the steering wheel will lock 
automatically and you will 

be unable to steer the wheels.

WARNING: If you need to tow the 
vehicle with two wheels raised, 
make sure that the ignition key is 
in position STOP (OFF). Otherwise, 
with ESC activated, the relative 
electronic control unit memorizes a 
malfunction and the warning light 

 

is activated on the instrument panel, 
which requires the assistance of an 
Authorized Maserati Dealer to reset 
the system. 

When towing the vehicle, 
make sure that you observe 
the road traffic regulations 

concerning both the towing device 
and driving conduct.

When towing the vehicle 
with the engine off, 
remember that, without 

the assistance of the brake servo, 
a stronger effort is required on the 
brake pedal for braking and on the 
steering wheel for steering.

Screw the towing hook 
into its seat (approx. 11 
turns). Accurately clean the 

threaded seat before tightening the 
hook.

WARNING: The maximum angle of 
the towing cable, both horizontal and 
vertical shall be ±15°.

6

196

In the event of an 
accident 

It is important always to stay calm.
-  If you are not directly involved, stop 

at a safe distance of at least 11 yd 
(10 m) away from the accident area. 

-  If you are on a highway, stop 

without obstructing the emergency 
lane and be especially careful if you 
need to exit the vehicle. 

-  Turn off the engine and turn on the 

hazard lights. 

-  At night, illuminate the accident 

area with the headlights. 

-  Always act with caution: you should 

not risk someone crashing into you. 

-  Indicate that an accident has 

occurred by placing the emergency 
triangle in a well visible position 
and at the prescribed distance. 

-  Call the emergency services, 

providing as much information 
as possible. On highways, use the 
special emergency call boxes.

-  Remove the ignition key from the 

vehicles involved. 

-  If you smell fuel or other chemical 

products, do not smoke and ask 
people around you to put their 
cigarettes out. 

To extinguish fires, even small ones, 
use a fire extinguisher, blankets, sand 
or earth. Never use water. 
In multiple vehicle accidents occurred 
on highways, particularly where 
visibility is poor, there is a high risk 
of being involved in other collisions. 
Leave your vehicle immediately and 
move away from it. 

If there are injured persons

-  Never leave an injured person 

alone.  

-  Do not crowd around injured 

persons. 

-  Reassure the injured person that 

help is on the way and stay close to 
them to assist them. 

-  Unfasten or cut the seat belts 

restraining the injured persons. 

-  Do not give the injured persons 

anything to drink. 

-  The injured person should never be 

moved. 

-  Remove the injured person from 

the vehicle only if there is a risk 
of fire, sinking in water or falling 
down into a pit. When removing 
injured persons from the vehicle, 
do not pull their limbs, bend their 
head and, as far as possible, keep 
their body in a horizontal position. 

7

197

Capacities and technical specifications

Fuel Requirements 

198

Engine oil 

199

Fuel consumption 

199

Capacities: Quantity and specifications of the products to use  200
Technical specifications 

202

Tire pressure 

208

7

198

Fuel Requirements

Octane Rating

Maserati engines are designed for 
optimum performance on unleaded 
premium gasoline with an AKI octane 
rating of 91 or above. AKI (Anti Knock 
Index) is an average of the Research 
Octane Number, RON, and the Motor 
Octane Number, MON (RON + MON/2 
gives you the AKI).

Unleaded Fuel

Maserati incorporates a catalytic 
converter system and you must only 
use unleaded gasoline. U.S. and 
Canadian regulations require that 
pumps delivering unleaded gasoline 
be labelled “UNLEADED”. Only these 
pumps have nozzles which fit your 
vehicle’s fuel filler inlet. It is unlawful 
to dispense leaded fuel into a vehicle 
labelled “unleaded gasoline only”. 
Leaded gasoline damages the catalytic 
converter and heated oxygen sensor 
system. Repeated use of leaded 
gasoline will lessen the effectiveness 
of the emission control system and 
could result in loss of emission 
warranty coverage. State and local 
vehicle inspection programs will 
make detection of misfueling easier, 

possibly resulting in emission test 
failure for misfueled vehicles.

WARNING: Some U.S. & Canadian 
gasolines use an octane 
enhacing additive called Methy-
Cyclopentadienyl Manganese 
Tricarbonyl (MMT). If such fuels are 
used your Emission Control System 
performance may be affected, and 
the check engine light located on the 
instrument panel/cluster assembly 
may illuminate (come ON). If the 
check engine light illuminates be sure 
to visit your Authorized Maserati 
Dealer for vehicle service.

Gasoline Containing Alcohol & 
Ethers (“Oxygenated Fuels”):

Some fuels in the U.S. and/or Canada, 
contain “oxygenates” which are 
usually alcohols or ethers. In some 
locations in the U.S. and/or Canada, 
state or local laws require that the 
fuel station fuel service pumps be 
clearly marked indicating use of 
alcohols or ethers. Please be aware 
that in some geographic areas fuel 
stations may have fueling pumps 
that are unmarked. If you are not 
sure if the fuel you will be dispensing 
into your vehicle contains alcohol or 
ethers, ask the fuel service station 
operator.

WARNING: Some geographical areas 
in the U.S. and/or Canada, require the 
use of “oxygenated” fuels to meet 
seasonal air quality standards. 
- Alcohol - Ethanol: Fuels containing 
ONLY up to 10% ethanol by volume 
may be used (ethanol may also 
be referred to as Ethyl alcohol, or 
“Gasohol”.  
- Ethers - MTBE: Fuel containing ONLY 
up to 15% MTBE may be used. 

WARNING: Do not use any gasoline 
that contains lead as a knock 
inhibitor, and DO NOT use lead 
additives. The use of Detergent 
gasoline is effective in minimizing fuel 
injector and intake valve deposits. The 
use of external fuel injector cleaning 
systems/fluids is NOT recommended.

California Proposition 65 
Warning

THIS MOTOR VEHICLE CONTAINS 
CHEMICALS KNOWN TO THE 
STATE OF CALIFORNIA TO CAUSE 
CANCER, BIRTH DEFECTS OR OTHER 
REPRODUCTIVE HARM (see page 7)

7

199

Engine oil

To check the level, please see the 
section “Maintenance”. 
Do not top up with oil having 
characteristics other than those of the 
oil already used.
The gap between the MIN and MAX 
reference marks on the dipstick 
corresponds to about 0.4 US gal (1.5 
liters) of oil.
Use SAE 5W/40 API SL/CF and ACEA 
A3, B3, B4 oil for fuel-powered 
engines. Recommended: Shell Helix 
Ultra 5W-40 API SM/CF.

Fuel consumption

The fuel consumption values shown in the following table were established 
based on homologation tests (your actual mileage may vary).

Fuel consumption  
(m.p.g. (USA))

City Highway 

15.8

28.6

NOTE: The type of route, traffic conditions, weather conditions, driving style, 
general condition of the vehicle, equipment/accessories in the vehicle, use of 
the air conditioning system, vehicle load and other items or situations which 
may negatively affect the vehicle aerodynamics or wind resistance lead to 
consumption ratios differing from the indicated ones.

NOTE: The fuel economy values shown are tested values.