MR366MEGANE6.pdf

Climate control

AIR CONDITIONING

CLIMATE CONTROL

MANUAL AIR CONDITIONING

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

77 11 318 262

SEPTEMBER 2005

EDITION ANGLAISE

"The repair procedures given by the manufacturer in this document are based on the

technical specifications current when it was prepared.

Copying or translating, in part or in full, of this document or use of the service part

reference numbering system is prohibited without the prior written authority of

RENAULT s.a.s.

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."

Climate control

Contents

Page

62A

AIR CONDITIONING

Introduction

62A-1

Fault finding log

62A-5

Function layout

62A-7

General operating mode

62A-8

Configuration readings and

configuration

62A-16

Conformity check

62A-17

Customer complaints

62A-43

Fault finding chart

62A-44

62B

CLIMATE CONTROL

Program no.: 0003

Vdiag no.: 44

Introduction

62B-1

System operation

62B-6

Allocation of computer tracks

62B-8

Configuration and programming

62B-9

Fault finding log

62B-10

Summary of faults

62B-12

Interpretation of faults

62B-13

Interpretation of statuses

62B-21

Interpretation of parameters

62B-27

Conformity check

62B-34

Customer complaints

62B-40

Fault finding chart

62B-41

Help

62B-54

62C

MANUAL AIR CONDITIONING

Introduction

62C-1

System operation and

allocation of tracks

62C-4

Fault finding log

62C-5

Customer complaints

62C-7

Fault finding chart

62C-8

ABBREVIATIONS

MEANING OF ABBREVIATION

ABS

Anti-lock braking system

ALP

Fault finding chart

APC

After ignition

AVC

Before ignition feed

BVA

Automatic gearbox

BVM

Manual gearbox

BVR

Sequential gearbox

CAN

Controller Area Network

Air conditioning

Compact disc

PAS

Power assisted steering (hydraulic)

DAE

Electric power assisted steering

DVD

Digital versatile disc

DTC

Fault finding code

EGR

Exhaust gas recirculation

ESP

Electronic Stability Program

GMV

Fan assembly

CNG

Compressed natural gas

LPG

Liquefied petroleum gas

HLE

High yield strength

MAG

Metal active gas (for welding steel)

MIG

Metal inert gas (for welding aluminium)

Workshop repair manual

Technical Note

OBD

On board diagnostics

SER

Resistance spot welding

SSPP

Tyre pressure monitoring system

THLE

Very high-tensile strength

Labour time

UCH

UPC

Protection and switching unit

UCT

Roof control unit

UHLE

Ultra high yield strength

VIN

Vehicle identification number

162A

AIR CONDITIONING

Fault finding - Introduction

AIR CONDITIONING

Fault finding - Introduction

62A

Manual climate control

and

Climate control

1. SCOPE OF THIS DOCUMENT

This document presents the fault finding procedure applicable to all computers with the following specifications:

Vehicle : Mégane II

Function concerned: Air conditioning

2. PREREQUISITES FOR FAULT FINDING

Documentation type:

Fault Finding Procedures (this document and the technical notes for the injection fitted to the vehicle,

the Passenger Compartment Central Unit (UCH) and the Protection and Switching Unit):

– Assisted fault finding (integrated into the diagnostic tool), Dialogys.

Wiring Diagrams:

– Visu-Schéma (CD-ROM), paper version.

Diagnostic tools type:

– CLIP

Type of special tooling required:

SPECIAL TOOLING REQUIRED

Multimeter

Elé. 1681 Universal bornier

3. RECAP

Faults:

There are faults which are displayed and stored present faults (which occurred in certain circumstances and which

still exist) and stored faults (which occurred in certain circumstances and have since disappeared or which are still

present but not detected in the present context).

The present or stored status of faults must be considered when using the diagnostic tool after switching on + after

ignition (without activating any system components).

Present faults must be dealt with according to the procedure specified in the Interpretation of faults section.

For a stored fault , note the faults displayed and follow the instructions shown in the Notes section.

If the fault is confirmed when the instructions in the Notes section are applied, the fault is present. In this case, deal

with the fault.

If the fault is not confirmed , carry out basic checks. Check:

– The electric lines on which there is a fault;

– The connectors on these lines (corrosion, bent pins, etc.);

– The resistance of the faulty component;

– The condition of the wires (insulation melted or cut, chafing, etc.).

CLIM X84 1.1

Edition 3

62A-1

AIR CONDITIONING

Fault finding - Introduction

62A

Manual climate control

and

Climate control

Conformity check

The aim of the conformity check is to check statuses and parameters that do not produce a fault display on the

diagnostic tool when they are inconsistent. Therefore, this phase is used to:

– carry out fault finding on faults that do not have a fault display, and which may correspond to a customer complaint.

– check that the system is operating correctly and that there is no risk of a fault recurring after repairs.

This section features the fault finding procedures for statuses and parameters, and the conditions for checking them.

If a status is not behaving normally or a parameter is outside the permitted tolerance values, consult the

corresponding fault finding page.

Notes about the conformity check for the climate control system:

The air conditioning system conformity check is divided into four parts. The parts relate to the four air conditioning

sub-functions, heater, cold loop, user selection and passenger compartment ventilation.

The statuses and parameters related to these sub-functions are listed with their respective computers.

N.B.: the manual air conditioning control panel does not control electrical components and cannot be subjected to

fault finding. Therefore, there is no conformity check in the 62C Manual air conditioning section.

Note:

The interpretation of statuses, parameters and commands is also split into several sections. Everything controlled by

the air conditioning control panel is explained in the two Air conditioning sections, 62A and 62B . On the other hand,

signals from other computers are explained in the Fault finding sections for these computers (see the conformity

check).

Customer complaints - Fault finding chart

If the diagnostic tool check is correct, but the customer complaint persists, the fault should be dealt with according to

the customer complaint.

A summary of the general procedure to follow is provided on the

following page in the form of a flowchart.

CLIM X84 1.1

Edition 3

62A-2

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