ECO mode RENAULT SCENIC 2009 J84 / 2.G Air Conditioning Climate Control Workshop Manual

62B - 2
CLIMATE CONTROL
Fault finding – Introduction62B
V3 MR-372-J84-62B000$010.mif
Vdiag No.: 44
162BCLIMATE CONTROL
Fault finding – Introduction
1. SCOPE OF THIS DOCUMENT
This document presents the fault finding procedure applicable to all computers with the following specifications:
2. PREREQUISITES FOR FAULT FINDING
Documentation type:
Fault finding procedures (this manual):
–Assisted fault finding (integrated into the diagnostic tool), Dialogys.
Wiring Diagrams:
–Visu-Schéma (CD-ROM), paper version.
Type of diagnostic tools:
–CLIP
Type of special tooling required:
3. RECAP
Procedure
To run fault finding on the vehicle's computers, switch on the ignition in fault finding mode (forced + after ignition
feed).
Proceed as follows:
–Renault card in the card reader (keyless vehicle scenario 1, standard, not hands-free and scenario 2, top of
the range, hands-free),
–press and hold the Start button (longer than 5 seconds) with start-up conditions not fulfilled,
–then connect the diagnostic tool and perform the required operations.
To cut off + after ignition, proceed as follows:
–disconnect the diagnostic tool,
–press the Start button twice briefly (less than 3 seconds),
–check that the + after ignition feed has been cut off by checking that the computer warning lights on the
instrument panel have gone out. Vehicle: Scénic II
Function concerned: Climate controlComputer name: Careg
Program No.: 0003
Vdiag No.: 44
SPECIAL TOOLING REQUIRED
Multimeter
Elé. 1681 Universal bornier
Note:
The left-hand and right-hand xenon bulb computers are powered 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 (+ after
ignition imposed) and the dipped headlights are on.
ACREG X84 1.1
Edition 2
MR-372-J84-62B000$010.mif

62B - 10
CLIMATE CONTROL
Fault finding – Configurations and programming62B
V3 MR-372-J84-62B000$040.mif
Vdiag No.: 44
CLIMATE CONTROL
Fault finding – Configurations and programming
CLIMATE CONTROL COMPUTER CONFIGURATION:
The climate control computer has 2 configuration functions. These configurations need to be set after the computer
has been replaced.
These two configurations are important as they ensure air conditioning is optimised within the vehicle (better control
of automatic climate control). If they are not correctly entered, cold air and warm air production will be severely
affected (e.g. heating resistors will not be switched on to heat the passenger compartment air).
These configurations can be accessed in repair mode by the diagnostic tool and can only be entered using
the fault finding by computer menu as opposed to the fault finding by function menu.
These configurations can be read, also using the diagnostic tool in repair mode to ensure they have been correctly
set. Configurations can be read in both fault finding by computer mode and fault finding by function mode.
–The first configuration is CF044 Vehicle type; this configuration allows you to enter the body type to which the
climate control computer is fitted (J84/R84 for 4 wheel drive Mégane Scénic and Scénic, and OTHER X84 for all
other Méganes). The configuration reading is called: LC013 Vehicle type.
–The second configuration is CF117 Type of heating resistors; this configuration is used to enter the type of
passenger compartment air heating resistors fitted in the vehicle. There are three options: WITHOUT for vehicles
without 1000 W and 1800 W resistors.
Heating resistors are mainly fitted on vehicles with Diesel engines.
They are located in the ventilation - air distribution unit (left-hand side), next to the heater matrix. The label affixed
to the resistor unit (with the part number) specifies whether the resistors are 1000 or 1800 W (Note: 1800 W
resistors are mainly fitted to Mégane Scénics). This configuration reading is called: LC043 Heating resistor.
Note:
In fault finding by function mode, the diagnostic tool can also display the configuration readings of the other computers
involved in the air conditioning function. All configurations of the air conditioning function (injection computer, UCH
and Protection and Switching Unit) are listed in Section 62A Air conditioning.
MIXING
AND DISTRIBUTION MOTOR PROGRAMMING PROCEDURE (self-setting):
There is no specific programming operation for the mixing motor and the distribution motor.
However, the minimum and maximum limits of these motors have to be programmed. This operation is automatic and
is performed in the following cases:
–after replacing the mixing or distribution motor,
–after disconnecting the battery or after disconnecting the climate control computer supply fuse,
–if a fault, declared as present when the ignition was switched off, disappears the next time the ignition is switched
on.
IMPORTANT
To ensure this programming operation is performed correctly, the passenger compartment blower must be

switched off (speed set to 0).
ACREG X84 1.1
Edition 2
MR-372-J84-62B000$040.mif

62B - 30
CLIMATE CONTROL
Fault finding – Interpretation of parameters62B
V3 MR-372-J84-62B000$080.mif
Vdiag No.: 44
The following table gives the percentages by which the air distribution motor is controlled as well as the opening
status of the lower flaps (footwell flap and under seat duct flap). To view the lower flaps, remove the right-hand and
left-hand lower air ducts.
Values should be checked with the engine switched off and the air conditioning in manual mode (tolerance ± 5%).PR011
DISTRIBUTION FLAP POSITION
NOTESThe values listed below are only given as a guide (they depend on which way the flap
is being moved).
Air distribution
requestPR011
Distribution
flap positionAir flow distribution information
Lower flap
opening status Demisting
flowVent flow Footwell flow
Demisting
100%
High Low NoneCompletely
CLOSED
Demisting + Footwells
60%
High Low HighCompletely
OPEN
Air vents
0%
Low High NoneCompletely
CLOSED
Vents + Footwells
15%
Low High HighApproximately 20%
OPEN
Footwell Ventilation
50%
Average Average HighCompletely
OPEN
AFTER REPAIRRepeat the conformity check from the start.
ACREG X84 1.1
Edition 2