MR366 Megane 0 - General Information

General information

FAULT FINDING INTRODUCTION

FAULT FINDING INNOVATIONS

XM0B - XM0C - XM0F - XM0G - XM0H - XM0J - XM0U

77 11 318 202

"The repair methods given by the manufacturer in this document are based on the technical specifications current when it was prepared.

The methods may be modified as a result of changes introduced by the manufacturer in the production of the various component units and accessories from which his vehicles are constructed."

AUGUST 2002

All copyrights reserved by Renault.

EDITION ANGLAISE

Copying or translating, in part or in full, of this document or use of the service part reference numbering system is forbidden without the prior written authority of Renault.

© RENAULT 2002

Generalinformation

Contents

Page

01E

01H

FAULT FINDING INTRODUCTION

General procedure 01E-1


Special notes 01H-1

FAULT FINDING INTRODUCTIONGeneral method 01E

01E-1

101EFAULT FINDING INTRODUCTIONGeneral method

The Mégane is a new generation multiplex vehicle. The specifications of the multiplex network have changed. The main change in the multiplex network is the speed of communication: it has changed from 250 kBauds to 500 kBauds on the Mégane.

NOTE: The multiplex network of the vehicle is the main functional communication network of the vehicle. But certain optional fuctions are still performed by track wires.

This change has allowed a new optimisation of the electronic layout of the vehicle in two ways:● Distribution of vehicle functions: the main computers present on the multiplex network manage several

functions (example: UCH: access - vehicle protection - lighting - wipers - passenger compartment heating - tyre pressure monitor).

● Elimination of redundant sensors: The "steering wheel angle" signal used by the electronic stability program is produced by the electric power assisted steering which then transmitts it to the multiplex network. So the steering wheel angle sensor used by the electronic stability program does not exist.

This change has also allowed fault finding on computers present on the multiplex network to be performed by the main communication network of the vehicle (multiplex network) instead of a cable network dedicated to fault finding (K / L lines).

Warning: The Mégane can only support fault finding using the CLIP diagnostic tool fitted with the new vehicle connection sensor lead (Part no. Elé. 1674 or 00 00 167 400).

IMPORTANT:However, the Mégane still uses two different physical fault finding media:● The multiplex network: which allows fault finding of the following computers: instrument panel, electric

power assisted steering, airbag, automatic air conditioning, UCH, anti-lock braking system - electronic stability program, protection and switching unit, injection.

● The K/L line fault fidning network: which allows fault finding on the following computers: automatic transmission, LPG - NGV unit, XENON bulb.

Certain other computers, although present on the vehicle multiplex network, are still fitted with "self-diagnostic function": Central Communication Unit (Carminat), driving school unit.

IMPORTANT:Computer supply for the fault finding procedure:

To run fault finding on the vehicle computers, proceed as follows:● Renault card on the card holder (keyless vehicle scenario 1 (basic, not hands-free) and scenario 2 (top of

the range, hands-free)● Long press (more than 5 seconds) on "start" button without start-up conditions ● Then connect the diagnostic tool and perform the required operations.


01E-2

Innovations on the Mégane:The innovations on the Mégane may be classified into three categories:

1 - Functional innovations:The main functional innovations on the vehicle are as follows:

FUNCTIONAL INNOVATIONS

This section describes the new services present on the vehicle and their integration on the vehicle.

ARCHITECTURAL INNOVATIONS

This section describes the distribution of the main functions and the new computers fitted to the vehicle.


This section describes the fault finding changes implemented on the Mégane in order to:● Allow fault finding on the multiplex network of the vehicle (new vehicle to diagnostic

tool connection sensor lead).● Develop and complement multiplex network fault finding functions (physical

measurements of the type of fault, fault finding assistance etc.).● Mask the diversity and complexity of vehicle functions: fault finding by function, multi-

computers, etc.

KEYLESS VEHICLE (access, protection - de-protection and hands-free starting)

This function is provided by the following computers:● UCH: responsible for access and vehicle protection (immobiliser).● Steering lock: participates in vehicle protection (electromechanical locking of the

steering column).● Injection: responsible for vehicle protection (immobiliser) and control of the starter

motor.● Switching Protection Unit: responsible for the power supplied to the starter motor at

the request of the UCH, and for injection management.

ELECTRONIC STABILITY PROGRAM

This function is provided by the following computers:● Anti-lock braking system - electronic stability program: responsible for the trajectory

analysis function by means of the speed sensors, the yaw sensor, the transverse acceleration sensor and the steering wheel angle (driver's intention: signal sent by the electric power assisted steering).

● Injection: management of engine torque in order to correct the trajectory at the request of the electronic stability program or automatic transmission.

● Automatic transmission: translation (shared with the injection computer) of driver's intention, sends torque requests to the injection computer.

LIGHTING - XENON BULB

This 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.


01E-3

2 - Design innovations:

These innovations concern services which are already in use but which are implemented in a specific way on the Mégane II:

MULTIMEDIA

This 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 MONITOR

This 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.

AIR CONDITIONING

This service is standard on RENAULT vehicles, only the distribution of tasks is specific:● Air conditioning: responsible for user intention (management of temperature for

controlled air conditioning) and for mixing and distribution of air in the passenger compartment (manual and controlled air conditioning).

● UCH: responsible for the heating function.● Injection: responsible for management of the air conditioning (cold cycle).● Switching Protection Unit: responsible for the power required for air conditioning

(compressor and engine cooling fan).

WIPERS

The distribution of the function is as follows:● UCH: responsible for driver's intention, management of the wiper stalk and the rear

screen wiper.● Switching Protection Unit: responsible for the power required for the windscreen

wiper.

LIGHTING

This function has already been described in Section 1 - Functional innovations. Refer to this section for further information.NOTE: In the case of lighting without XENON bulbs, the Switching Protection Unit manages the dipped headlights.


01E-4

Finally, the Mégane has a new computer, which has never been fitted to any RENAULT vehicle before: the Switching Protection Unit. The main functions of this computer are as follows:

ENGINE MANAGEMENT -

INJECTION

This function is shared by two computers:● Injection: management of programming and information associated with engine

management, and of the speed regulation and limitation function.● Protection and Communication Unit: management of the power required for engine

management. The Protection and Communication Unit also incorporates the fuel pump relay and actuators controlled by cable by the injection computer.

VEHICLE POWER SUPPLY

The main power relays of the vehicle are directly integrated into the Switching Protection Unit (including the fuel pump relay and injection actuators).

POWER UNIT FOR INJECTION

Management of the starter motor, the air conditioning compressor and the engine cooling fan.

POWER UNIT FOR THE UCH

Management of lighting (combined with the XENON bulbs) and window wipers.

POWER UNIT FOR AIR CONDITIONING

Management of the heated rear screen.


01E-5

3 - Fault finding innovations:

Development of the electronic and functional design of the Mégane has necessitated changes in the fault finding processing used. The main fault finding changes are as follows:

● New diagnostic tool to vehicle connection sensor lead: This change is made necessary by the new medium used for communication with the computers present on the main communication network of the vehicle: the multiplex network. This lead incorporates the communication cards for the computers of the multiplex network and the computers which can support fault finding on the K / L lines.

IMPORTANT:The airbag harness tests and the various physical measurement tests must always be carried out using the existing diagnostic tool leads and modules.

● New interface for diagnostic tool navigation: The diagnostic tool navigation display has changed for fault finding the Mégane. Note in particular the following changes:● Identification of the vehicle by entering the VIN: For the moment this change is specific to the Mégane. It

can be performed manually or automatically, by interrogation of the vehicle. It also gives the After-Sales type, and the engine and gearbox type.

NOTE: This change will eventually be extended to all RENAULT vehicles which can already support fault finding by VIN identification (example: Laguna II, Clio II Phase 2).

● Distinction between the fault finding and repair menus: The fault finding menu incorporates all the functionalities associated with analysis of an electrical or electronic fault (processing of faults, conformity checking, actuator commands and processing by customer complaint) whereas the repair menu allows performance of all the operations associated with replacement of a component and/or modification of the diagnostic system configuration (configuration read operations, configuration, programming, specific commands etc.).

● New electronic layout integrity test: As correct operation of the vehicle is dependent on the integrity of the multiplex network (main functional communication network) and of the cabled electronic systems, the multiplex network test has changed, becoming the vehicle electronic layout integrity test. The changes are as follows:● Multiplex network test: This test remains similar to that already used for RENAULT multiplex vehicles. But it

also incorporates a read of the number of faults from the multiplex computers, physical measurements of the types of multiplex network faults (open circuit, short circuit to earth, short circuit to the +ve of the faulty rings) and an assisted help procedure for detecting the defective computer or ring (in the event of total paralysis of the network).


01E-6

● Testing other computers which 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.


01E-7

Summary list of the computers and functions present on the Mégane vehicle:

Computer name FittingFault finding

procedureMain function

Fault finding sub-functions

Airbag Standard ● Tool● Multiplex network

● Passive protection by deployment of airbags

None

Anti-lock braking system

Standard ● Tool● Multiplex network

● Anti-lock braking in braking phase

None

Automatic gearbox

Optional ● Tool● K / L lines (although

present on the multiplex network)

● Automatic gear change depending on driver intention

None

Driving school unit

Optional ● Self-diagnostic● Multiplex network

● Management of the "dual control" system

None

Manual or automatic air conditioning

Optional ● Manual air conditioning cannot support fault finding

● Tool for automatic air conditioning

● Multiplex network

● Air conditioning: user intention and passenger compartment air distribution

Air conditioning

Electric power assisted steering


● Power assisted steering Supplies the steering wheel angle to the electronic stability control program

Electronic stability control program (including anti-lock braking system)

Optional ● Tool● Multiplex network

● Anti-lock braking function ● Electronic stability and

understeer program

None

Injection Standard ● Tool● Multiplex network

● Engine management computer

Keyless vehicle: Air conditioning

LPG / NGV Optional ● Tool● K / L lines (although

present on the multiplex network)

● LPG / NGV injection management

None

XENON bulb (COSLAD)

Optional ● Tool● K / L lines

● Position and management of the dipped headlights

None

Central Communication Unit (Carminat)

Optional ● Self-diagnostic● Multiplex network

● Satellite navigation None


Computer name FittingFault finding

procedureMain function

Fault finding sub-functions

UCH Standard ● Tool● Multiplex network

● Management of access and the passenger compartment

Keyless vehicleAir conditioningTyres

Switching Protection Unit


● Output management (mainly engine compartment)

Keyless vehicleAir conditioning

Instrument panel


● Display of vehicle information

Tyres

Steering column lock

Standard ● Does not support fault finding (supervised by the UCH)

● Multiplex network

● Immobilisation of the steering column (vehicle protection)

Keyless vehicle

01E-8

FAULT FINDING INNOVATIONSSpecial notes 01H

01H-1

101HFAULT FINDING INNOVATIONS Special notes

Introduction:

The purpose of this "Fault finding Innovations" section is to demonstrate the main fault finding developments in line with the development of the vehicle's technical specifications and in particular, the complexity of its design. These developments in fault finding can be divided into four categories:

● Fault finding procedure: this subsection describes the overall fault finding procedure to apply to the vehicle as well as developments with regard to the fault finding tool.

● New application for the fault finding tool: this subsection describes changes in the way information is presented in Fault finding and Repair mode.

● Computer fault finding: this subsection describes the various functions that can be accessed in Fault finding and Repair mode.

● Function fault finding: this subsection describes the various functions that can be accessed in Fault finding by Function (Keyless Vehicle/Air conditioning and Tyres) and Repair mode.

1. Fault finding procedure:

1.1. Computer supply:

To run fault finding on the vehicle's computers, the ignition must be switched on in fault finding mode (+ after ignition), i.e. proceed as follows:

● Renault card in the card holder (keyless vehicle scenarios 1 (basic, not hands-free) and 2 (top of the range, hands-free)

● Long press (more than 5 seconds) on "start" button without start-up conditions● Then connect the fault finding tool and perform the required operations.

Important: the computers on the right and left of the Xenon bulbs are supplied when the dipped headlights are lit. Fault finding procedures can only be carried out on them after the ignition has been switched on in fault finding mode and the dipped headlights are on.

Cutting off the + after ignition feed is performed as follows:

● Disconnect the fault finding tool.● Press the "start" button twice briefly.● See that the + after ignition feed has been cut off by checking that the computer warning lights on the

instrument panel have gone out.

Warning: fault finding on the MEGANE II can only be carried out using the CLIP fault finding tool fitted with the new vehicle connecting cable/sensor (Part number: Elé. 1674 or 00 00 167 400).


01H-2

1.2 Fault finding procedure:

The fault finding procedure to be applied to the Megane is as follows:

Enter the VIN number– Automatic (Megane II)– Manual (other vehicles)

Multiplex network test– Faulty segments– Computers not recognised– Computers not detected– Configuration of the

computers present on the multiplex network

Vehicle layout TEST– Computers with a present

fault– Identifications and

connection with the computers that can support fault finding through lines K and L

FAULT FINDING BY A COMPUTER

Example: Injection

– Faults:– States/main parameters– Configuration

FAULT FINDING BY A FUNCTION (Communication with several computers at

once)Example: air conditioning function

SUB MENU CHOICEExample: cruise control,

engine cooling etc.

CHOICE OF A COMPUTERinvolved in the function

Example: injection computer

CHOICE OF A SUB FUNCTION

Example: cold loop

– States/parameters specific to the sub-menu

– Actuators specific to the sub-menu

– Configuration

– Faults:– States/main parameters– Configuration

– States/parameters specific to the sub-function (categorised by computer)

– Configuration


01H-3

● Vehicle identification by entering the vehicle identification number: this new function enables the vehicle to be precisely identified. In particular, it lets the operator know the After-Sales type, type of engine and type of gearbox on the vehicle.

"Copy of a screen shown as an example: not representative of the actual vehicle design".

Key:

Enter vehicle identification number: the vehicle identification number can be entered in automatic mode (the fault finding tool searches the vehicle and gives the vehicle identification number, the After-Sales type, type of engine etc.) or in manual mode (the operator enters the vehicle identification number manually and the tool shows the technical specifications of the vehicle in detail).


01H-4

● Multiplex network test: this fault finding stage is a requirement before moving on to carry out the fault finding procedure and repair a computer or function. It is comprised of a Multiplex network test (made up of identification and reading the number of computer faults) as well as connection and identification of computers present on the vehicle that can support fault finding through lines K-L.

"Copy of screen shown as an example: not representative of the actual vehicle design".

This diagram shows the result of the multiplex network test and computer related faults.

Examples in the circled area:

Valid:1236: Injection120 : Air conditioningl589 : Instrument panel654 : Power-assisted steering698 : Connection unit18 : Tyres52 : ESP

Does not support fault finding:55 : Engine immobliser1258: Gearbox587 : UPC


01H-5

(It is also possible to access fault finding by function from the following screen:)


Key:

Access menu to the list of vehicle functions

List of vehicle functions: this menu shows the operator the list of accessible vehicle functions as well as the different computers that support the function (the result is depicted visually on the diagram showing the vehicle's multiplex network):

Examples in this area:– Air conditioning:

– ["Clim X84 SOFT 5.00 $44"]: air conditioning computer.– ["INJ DCI K9 X-84"]: injection computer.– ["UCH X84 VDIAG 44"]: UCH.– ["UPC X84 VDIAG 44"]: Power and switching unit.

– Engine management computer:– ["INJ DCI K9-X84'']: Injection computer.

– Power assisted steering:– ["DAE X84-SOFT1-VDIAG'']: Power assisted steering computer.

– Lights– Instrument panel:

– ["Tableau de bord X84"]: Instrument panel computer.– Keyless vehicle:

– ["INJ DCI K9-X84"]: Injection computer– ["UCH X84 VDIAG 44"]: UCH.– ["UPC X84 VDIAG 44"]: Power and switching unit.


01H-6

● Vehicle design: this function is the comprehensive result of the vehicle integrity test carried out earlier. It combines the graphics result of the test carried out, access to the configuration menu for computers present on the multiplex network and to the fault finding menu for computers on the vehicle.


Key:

Access menu to the electroniclayout of the vehicle

Configuration of the computers on the multiplex network:This configuration specifies the computers present on the vehicle's multiplex network. It must be carried out when replacing the Airbag or UCH computer.

Diagnosable computer configuration:The configuration of diagnosable computers is a new function on the vehicle. It is required to specify computers that can support fault finding with the Renault diagnostic tool. It can determine non conformity or lack of response for a computer on the vehicle.The configuration of diagnosable computers on the vehicle is stored in the passenger compartment central unit (UCH) and Airbag. It is specific to the vehicle diagnosed and must be respecified when one of these two computers is replaced.During the configuration operation for computers on the vehicle that can support fault finding, the tool displays the list of computers specified in the other computer to give help and support to the operator.Finally, if there is uncertainty about which computers on the vehicle can support fault finding, the exhaustive list (specific to the vehicle) can be obtained by consulting the World Vehicle Database.


01H-7

● Fault finding by Computer: after the vehiclelayout result, the fault finding tool lists the various computers that can be accessed for fault finding and repair by the Renault tool. Fault finding by computer enables you to access all the functionalities related to dealing with and repairing a failure

● Fault finding by Function: after the vehiclelayout result, the fault finding tool immediately lists the various functions that can be accessed by the Renault tool. Moreover, selecting a function can identify the computers responsible for this function at once. Fault finding by Function can access the fault finding procedure for computers contributing to a function at the same time as well as the configurations related to this function.

Warning: all the menus in "Repair" mode described previously cannot be accessed from Fault finding by Function. A function is diagnosed and a part or computer is repaired.

Example: when the "Keyless vehicle" function is selected, the UCH (passenger compartment central unit), Switching and Protection unit and iInjection computers appear as graphics on the vehiclelayout result screen.

REMINDER: The Renault fault finding procedure can still be applied to the Megane II. For the record, faults will be dealt with as a priority (in fault finding by computer or by function). If the customer's problem cannot be resolved, carry out a conformity test (either by computer, or by function) and then a fault finding procedure by customer complaint.

IMPORTANT:The Mégane II fault finding procedure makes a distinction in the functions of the fault finding tool between the ideas of fault finding (identifying and dealing with a customer problem) and repair (altering the technical specifications of a computer after identifying the cause of a problem or replacing a part or computer).


01H-8

2. Presenting the new general navigation of the fault finding tool:


IMPORTANT:Menus on the fault finding tool are now navigated and selected using the mouse. Confirmation of a function is made by left clicking the mouse.

Key:

Introduction menu: selects and carries out overall identification (using the VIN) of the vehicle being diagnosed.

Previous screen: return to the previous stage.

Fault finding mode: selects fault finding mode (here, air conditioning control panel) and can access the various menus in the mode selected.

Repair mode: provides access to repair mode. This new mode combines the "Reading/Writing Configuration", "Other parameters", "Programming" and "Deleting" functions. The complete range of menus is only accessible in fault finding by computer.

Print: prints the data displayed on screen.


01H-9

Key (cont.):

Help: provides access to the fault finding tool help menu.

Main data: provides access to the summary screen for fault finding by computer or by function.

Identification: provides access to the identification screen for fault finding by computer or by function.

Fault test: provides access to the fault screen for fault finding by computer or by function.

Reading States/Parameters: provides access to the states and parameters screen for fault finding by computer or by function.Note: this new screen combines the states and parameters specified for a computer that previously appeared as separate "State" and "Parameter" menus.

Actuators: provides access to the actuators for fault finding by computer or by function.

Conformity test: provides access to the conformity test for fault finding by computer or by function.

Test by customer complaint: provides access to the test by customer complaint for fault finding by computer or by function.


01H-10

3. Computer Fault finding/Repair:

3.1 Computer Fault finding:

This section deals with the new screens and functions related to the development of the fault finding tool in fault finding by computer mode. The Fault finding section must be distinguished from the Repair section.

3.1.1. Summary screen:

This is the first screen to be accessed after selecting the "Fault finding by Computer" mode and the computer cannot support fault finding.


This new screen consists of a summary of the operating features of the computer to be tested. It comprises a resume of faults present and stored in the computer (number of faults stored in the computer memory) as well as the main states and parameters of the computer. This screen gives an overview of the way the computer operates.


01H-11

3.1.2. Identification screen:

The main new feature of this identification screen is the formulation of computer identification information.



01H-12

3.1.3. Fault screen:

The main new feature of this screen is direct access to the erasing stored faults function (arrow 1)


Key:

Erasing stored faults: this functions enables stored faults to be erased directly.


01H-13

REMINDER:

● A "mouse click (left button)" on the fault description (here, internal temperature sensor circuit) gives access to the fault context screen. According to the capabilities of the computer being diagnosed, this screen shows the actual and stored values of states and parameters saved when the fault appeared.


● A "mouse click" on the fault index (here, DF007) or fault characterisation (here, CO.1) provides access to the help screen.

● To return to the Default screen, press the "previous screen" or "Default" button.


01H-14

3.1.4. State and parameter screen:

This screen displays the states and parameters required for the conformity test of the computer being diagnosed. These states and parameters have been categorised by sub-functions (here, user selection - cold loop - passenger compartment ventilation and heater - see arrow 1) for simplified monitoring on the part of the operator.


Key:

Area 1: access to the parameter help screen.


01H-15

A mouse click on the state or parameter index (e.g. PR122) provides access to the parameter help screen to aid analysis and processing:

"Copy of a screen shown as an example: not representative of the actual vehiclelayout".

The items shown on the previous screen are located on this help screen (index, parameter title, actual value) as well as some new functions:

To return to the States/Parameters screen, press the "previous screen" button or the "Reading State/Parameters" button.

Key:

Values: this field gives the limit values of the parameter under normal operating conditions for the computer.

Information: this field describes the parameter and gives the vehicle operating conditions to which the limit values specified apply.

PDF: a "mouse click" on this button gives access to the processing and interpretation of the parameter described in the Technical Note that applies to the computer.

Diagrams: a "mouse click" on this button will display the wiring diagram for the component related to the parameter being monitored.

Files: a mouse click on this button gives access to the component file connected to the parameter to carry out conformity tests.


01H-16

3.1.5. Actuator screen:

This screen gives access to the actuator commands of the computer being diagnosed These actuator commands have been categorised by sub functions (here, passenger compartment ventilation and heater) to simplify the operator's search.


Key:

Zone 1: a "mouse click" in zone 1 gives access to the specific actuator command screen.


01H-17

Actuator command:


The actuator title is located on this actuator command screen (here, passenger compartment fan assembly) as well as some new functions:

To return to the actuator commands screen, press the "previous screen" button or the "Actuator" button.

Key:

Instructions: this field gives the procedure to be followed to launch the actuator command.

Running: this field shows the command's progress. The messages are the "command in progress"/"command complete" type.

Information: this field gives the vehicle operating conditions for the actuator command to be carried out.

Enter: a mouse click on this button launches the actuator command.


01H-18

3.2 Computer Repair:

This section deals with the new screens and functions related to the development of the fault finding tool in computer repair mode.

The "Computer Repair" mode can be accessed after selecting the computer and pressing the "Repair" button on the fault finding tool. It enables the "Reading/Writing Configuration", "Other parameters", "Programming" and "Cancellations" operations to be performed.

3.2.1. Reading Configuration:

This function checks the configurations of a computer before replacing a component, the computer or after the computer functions have been modified.



01H-19

3.2.2. Writing Configuration:

This function can modify the configurations of a computer after replacing a component, the computer or after the computer functions have been modified.


This screen shows all the configurations related to the computer being diagnosed. To carry out a configuration "mouse click" on the configuration title to get to the next screen.


01H-20


The configuration title (here, vehicle type) and some new functions are to located on this computer configuration screen:

To return to the write configuration screen, press the "previous screen" button or the "Write Configuration" button.

Key:

Instructions: this field gives the procedure to be followed to launch the configuration.

Running: this field shows how advanced the configuration is. The messages are the "command in progress"/"command complete" type.

Parameterisation: this field specifies the parameter to be written to the computer memory in order to carry out the configuration (here, B84 or similar, J84 or similar etc.).

Information: this field gives the vehicle operating conditions to carry out the configuration.

Enter: a mouse click on this button launches the configuration.


01H-21

3.2.3. Other parameterisations:

This function combines all the configuration/programming procedures of a computer (e.g. configuration of a UCH, Renault card allocation). The procedures are specific to the computer and so will not be described in this section but rather in the sections relating to computer fault finding and repair.

3.2.4. Programming:

This function contains all the procedures related to replacing a part that needs to be paired on the vehicle (e.g. throttle body where the mechanical stops need to be programmed). These programming methods are specific to a computer, details will be given in the specific computer sections.

3.2.5. Deleting:

This function contains the various deleting functions specified for a computer. e.g. deleting faults (all computers), deleting programming (e.g. injection computer).


This screen shows the various deleting functions specified for a given computer. The deleting function is accessed by a "mouse click" on the deleting title (here, erasing the fault memory).


01H-22


The clearance title and some new functions are located on this deleting screen (here, deleting the fault memory):

To return to the deleting screen, press the "previous screen" or "Deletion" button.

Key:

Instructions: this field gives the procedure to be followed to launch the configuration.

Running: this field shows how advanced the configuration is. The messages are of the "command in progress"/"command complete" sort.

Information: this field gives the vehicle operating conditions for which the actuator command can be carried out.

Enter: a mouse click on this button launches the actuator command.


01H-23

4. Fault finding/Repair by Function:

This new fault finding/repair mode is due to advances in complexity of the vehicle architecture and the division of a "customer" function between different "independent" computers. This type of fault finding enables dialogue to be carried out with different computers at the same time as they carry out a given function.

4.1. Fault finding by Function:

This subsection will deal with the features of this fault finding mode in relation to fault finding by computer described previously.

4.1.1. Summary screen:

The main difference from computer fault finding is the presence of tabs that give access to summary screens for different computers or a different function (here, air conditioning function including the climate control, injection, UCH and the Switching and Protection unit computers / see arrow 1). All other elements are exactly the same as the computer fault finding.


Key:

Zone 1: a "mouse click" in zone 1 gives access to the specific screen for the desired function.


01H-24

4.1.2. Identification screen:

Same notes as in the preceding section.


Key:



01H-25

4.1.3. Fault screen:


Key:


Clearing stored faults: this functions enables stored faults to be cleared directly.


01H-26

4.1.4. State and parameter screen:


Key:

Zone 1: list of sub functions associated with the function selected.

Zone 2: list of states and parameters associated with a sub-function, categorised by computer. In fault finding by function, the states and parameters of a function (e.g. keyless vehicle) can be accessed by sub function (e.g. starting) then by computer (e.g. UPC X84) to give the desired information simultaneously.


01H-27

4.1.5. Actuator screen:


In fault finding by function, the actuators can be accessed by sub function (e.g. heating), then by computer (e.g.: UPC X84) and finally by type of actuator (e.g. rear screen de-icing).

4.2. Repair function:

4.2.1. Reading Configuration:

This screen is the same as the reading configuration screen in computer mode. The only difference is the tabs that enable computers (related to the function) to be selected whose configurations you wish to check.

4.2.2. Non accessible functions:Functions that are not accessible in "fault finding by function" mode are as follows:

● Writing configuration● Other parameterisations● Programming● Clearing data other than the fault memory

This choice is related to the fault finding procedure that distinguishes physical components from the functions carried out.

Key:

Zone 1: list of functions associated with the function selected.

Zone 2: list of actuators associated with a sub-function, categorised by computer.In fault finding by function, the actuators can be accessed by sub function (e.g. heating), then by computer (e.g.: UPC X84) and finally by type of actuator (e.g. rear screen de-icing).

Documents

MR366 Megane 0 - General Information