display RENAULT SCENIC 2003 J84 / 2.G General Information

FAULT FINDING INTRODUCTION
General method
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LIGHTING - XENON
BULBThis function is provided by the following computers:
●UCH: translation of driver's intention, management of the lighting stalk, the direction
indicators and the rear fog lights.
●Switching Protection Unit: responsible for the power needed for lighting, the side
lights, the main beam headlights and the front fog lights.
●XENON bulb: responsible for management and correction of the dipped headlights.
IMPORTANT
The "discharge bulb" function in the Scénic II involves the following components:
●Two body-height sensors in the front and rear wheel arches on the left side.
The built-in front height sensor as well as the computer that manages
this feature.
●Two units that adjust / produce high-voltage lighting installed in the vehicle's
headlight units.
MULTIMEDIAThis function is provided by the following computers:
●Central Communication Unit (Carminat): responsible for the function.
●Navigation display: displays information relating to navigation.
IMPORTANT
This function may also be provided by the radio display, depending on the type of
navigation (basic - top of the range).
TYRE PRESSURE
MONITORThis function is provided by the following computers:
●UCH: responsible for the function, it also houses the receiver for tyre pressure
signals.
●Instrument panel: displays information relating to the tyre pressure monitor.
Note:
The tyre pressure is monitored by specific valves fitted with tyre pressure sensors.
AUTOMATIC
PARKING BRAKEThis function is provided by the following computers:●Automatic parking brake: manages the function and consists of the computer,
vehicle position sensor (gyroscope) as well as the mechanical cable locking /
unlocking system.
●Instrument panel: displays information about the automatic parking brake feature.
PARKING
ASSISTANCEThis function is provided by the following computers:●Parking assistance: manages the function with the instrument panel beeper
providing the user interface.

FAULT FINDING INTRODUCTION
General method
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–Testing other computers that support fault finding: this test consists of connection and identification of
the computers present on the vehicle which can support fault finding K / L lines.
●New fault finding topics: the fault finding topics are now split into two separate menus:
–Computer diagnosis:
similar to the existing fault finding topics apart from the changed menu presentation.
The states and parameters menus have been modified to allow simultaneous display of these data items
and divided into screens by function and sub-function (example: "ignition" sub-function in Injection).
In addition, the computer fault finding procedure allows access to the vehicle "repair" menu when replacing
parts to be matched with the vehicle (configuration, programming).
–Fault finding by function:
limited to computer fault finding present on the multiplex network of the vehicle
and to the keyless vehicle, air conditioning and tyre functions. This new type of fault finding allows an
overall diagnosis of a function to be made by simultaneous dialogue with all the computers involved in
providing the service. In this way, it is possible to simultaneously analyse all the components associated with
a function and also simultaneously supervise intersystem exchanges between the computers responsible
for a customer service.
Note:
In the event of detecting a faulty component, it is necessary to switch to computer fault finding mode to
perform the configuration operations - programming the replaced part.
If a function fault is detected, a physical part is replaced: hence the choices made concerning
navigation of the diagnostic tool.

FAULT FINDING INTRODUCTION
General method
01E
Computer name InstallationFault finding Main function Fault finding sub-
functions
Discharge bulb
(domain:
discharge bulb)Optional
●Tool
●K / L lines
●Position and management
of the dipped headlightsNone
Central
Communication
Unit (Carminat)Optional
●Self-diagnostic
●Multiplex network
●Satellite navigation None
UCHStandard
●Tool
●Multiplex network
●Management of access and
the passenger
compartmentKeyless vehicle
Air conditioning
Tyres
Switching
Protection UnitStandard
●Tool
●Multiplex network
●Output management
(mainly engine
compartment)Keyless vehicle
Air conditioning
Instrument
panelStandard
●Tool
●Multiplex network
●Display of vehicle
informationTyres
Steering
column lockStandard
●Does not support
fault finding
(supervised by
the UCH)
●Multiplex network
●Immobilisation of the
steering column (vehicle
protection)Keyless vehicle
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