automatic transmission FIAT DUCATO 244 2005 3.G Owners Manual

117GETTING THE BEST OUT OF YOUR VEHICLE
CONSTRUCTION FEATURES
DUCATO automatic gearbox is con-
trolled electronically with four for-
ward gears and reverse.
It is controlled by an electronic con-
trol unit which handles:
– the torque distributor;
– gearshifting;
– specific programmes.
The gearbox is coupled with a flow
power torque distributor with piloted
antislip device which makes it possible
to obtain demultiplication ratios.
The characteristic of this gearbox
which works without idle gear enables:
– higher compactness and weight re-
duction;
– improved output due to less fric-
tion;
– lower stress of transmission com-
ponents.GENERAL FEATURES
Electronic gearbox control makes it
possible to obtain gearshifting suited
to momentary engine characteristics
with a certain elasticity.
The electronic control unit has the
following task:
– adapting the oil pressure for
gearshifting to the engine torque;
– activating safety functions;
– defining the manual gearshifting
programme;
– system diagnostics.
For controlling these operating log-
ics the control unit uses the follow-
ing signals:
– engine rpm;
– engine temperature;
– engine torque;
– vehicle speed;
– gearbox oil temperature;– gearshift lever position;
– accelerator pedal position;
– brake pedal position.
The control unit also communicates
with the injection system electronic
control unit.
Conditions of use analysed by
the control unit
The control unit analyses each single
condition of use of the vehicle, dis-
criminating it on the basis of the sig-
nals received from the various sensors.
Analysed conditions are the follow-
ing:
– starting (position/accelerator ped-
al changing speed);
– acceleration (accelerator pedal
completely pushing down speed);
– full load (number of engine full load
kickdown signals or position mainte-
nance time);

164VEHICLE MAINTENANCE
thousands of kilometres
Replace fuel filter cartridge (Diesel versions)
Replace air cleaner cartridge (Diesel versions)
Replace air cleaner cartridge (petrol versions)
Replace spark plugs (petrol versions)
Top up fluids (engine coolant, brakes, power steering,
battery, windscreen washer, etc.)
Check timing belt conditions (***)
Replace timing belt and various control belts
(or every 48 months) (*)
Check engine control systems via diagnostic socket
Change gearbox - transmission - rear axle oil (4WD version)
Check gearbox/differential oil level (automatic transmission)
Change engine oil (**)
Replace engine oil filter (**)
Change brake fluid (or every 24 months)
Replace pollen filter (or every 12 months)
(*) Replace every 240,000 km or every 60 months for 2.3 JTD versions.
(**) Change/replace engine oil filter and oil every 40,000 km for 2.3 JTD versions
(***) Every 120,000 km for 2.3 JTD versions
30 60 90 120 150 180
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216TECHNICAL SPECIFICATIONS
BRAKES
SERVICE AND EMERGENCY
BRAKES
Front: disc, floating caliper with two
operating cylinders for each wheel and
pad wear warning light.
Rear: self-centring shoes and micro-
metric mechanism for clearance take-
up.
Certain versions are fitted with rear
disc brakes with Drum in hat device
(i.e. drum on disc to block the vehicle
when parked with handbrake en-
gaged).
Cross-over hydraulic circuit control.
Four sensors ABS system with EBD.
Automatic recovery of the friction
gasket wear; versions with rear disc
brake excluded (Drum in hat ver-
sions).
Lacking ABS system brakeforce dis-
tributor acting on rear brake hydraulic
circuit according to rear axle load.HANDBRAKE
Controlled by a lever, it works me-
chanically on the rear brake shoes.
For versions with rear disc brakes,
the handbrake works on the Drum in
hat device shoes.
IMPORTANTPull the handbrake
lever only when the vehicle is at a
standstill, or when the vehicle is run-
ning, but however only in case of a
failure of the hydraulic system.
Should the handbrake be exception-
ally used when the vehicle is running,
it is suggested to keep a moderate
traction to avoid causing the rear axle
block, entailing vehicle side skidding.
TRANSMISSION
CLUTCH
Hydraulically controlled without
travel-free pedal.
MECHANICAL GEARBOX
AND DIFFERENTIAL
Five forward gears and reverse with
synchromesh for front gear engage-
ment.
Cyclical gear reduction and differen-
tial assembly incorporated in the gear-
box.
Drive transmission to the front
wheels by means of drive shafts con-
nected to the differential assembly and
the wheels with CV joints.
Water, ice or salt on road
surfaces can deposit on
brake discs, reducing braking effi-
ciency on the first braking.
WARNING

242TECHNICAL SPECIFICATIONS
Use
Lubricants and grease
for transmission
Products for brakes
Radiatorantifreeze
Diesel fuel
additive
Windscreen/
rear window/
headlight washer fluid
(*) IMPORTANTThese two fluids cannot be mixed with each other. Contact Fiat Dealership for topping up.
Recommended
fluids and lubricants
TUTELA CAR
MATRYX
TUTELA GI/A
TUTELA HP 20
TUTELA
W 90/M-DA
TUTELA TOP 4
PARAFLU 11 (*)
or
PARAFLU UP (*)
DIESEL MIX
TUTELA
PROFESSIONAL
SC 35 Fluid and lubricant specifications
for correct vehicle operation
Fully synthetic lubricant SAE 75W-85 meeting API GL-4,
FIAT 9.55550
Lubricant for transmissions with ATF DEXRON II D LEV
properties
ATF DEXRON III oil type
Lubricant, grade SAE 80W-90 that passes API GL5, MIL-L-
2105 D, IVECO 18-1804, FIAT 9.55550 and FIAT 9.55523
specifications
Synthetic fluid, FMVSS n° 116 DOT 4, ISO 4925,
SAE J-1704, CUNA NC 956 - 01
Protective with antifreeze action based on
inhibited monoethylen glycol, CUNA NC 956-16
Protective with antifreeze action (red colour) based on inhib-
ited monoethylen glycol, with O.A.T. formulation, that passes
CUNA NC 956-16, ASTM D 3306 specifications.
Diesel fuel additive providing diesel engine protection
Mixture of alcohol and surfactants CUNA NC 956 -IIApplications
Mechanical
transaxles developping
high temperatures
Power steering system
Automatic gearbox
EP oil for standard and
self-locking differentials
Hydraulic brake and
clutch controls
Cooling circuits.
Proportion: 50% down
to -35° C Not to be
mixed with products
having different
formulas.
To be mixed with
diesel fuel
(25 cc every 10 litres)
To be used pure
or diluted