ignition RENAULT SCENIC 2010 J95 / 3.G Air Conditioning Workshop Manual

62A - 2
AIR CONDITIONING
ABBREVIATIONS62A
V4
Manual air conditioning
and
Climate control
ABBREVIATIONS MEANING OF ABBREVIATION
ABS systemAnti-lock braking system
Fault Finding Chart Fault Finding Chart
APCAfter ignition
AVCBefore ignition feed
BVAAutomatic gearbox
Manual gearboxManual gearbox
BVRSequential gearbox
CANController Area Network
ACAir conditioning
CDCompact disc
PASPower assisted steering (hydraulic)
DAEElectric power assisted steering
DVDDigital versatile disc
DTCFault finding code
EGRExhaust gas recirculation
ESPElectronic Stability Program
GMVFan assembly
CNGCompressed natural gas
LPG Liquefied petroleum gas
HLEHigh yield strength
MAGMetal active gas (for welding steel)
MIGMetal inert gas (for welding aluminium)
MRWorkshop repair manual
TNTechnical Note
OBDOn board diagnostics
SERResistance spot welding
SSPPTyre pressure monitoring system
THLEVery high-tensile strength
TMLabour time
UCHUCH
UPCProtection and switching unit
UCTRoof control unit
UHLEUltra high yield strength
VINVehicle identification number
162AAIR CONDITIONING
ABBREVIATIONS
MR-372-J84-62A000$010.mif

62A - 3
AIR CONDITIONING
Fault finding - Introduction62A
V4
Manual air conditioning
and
Climate control162AAIR CONDITIONING
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 document and the Technical Notes for the injection fitted to the
vehicle, the UCH and the Protection and Switching Unit:
–Assisted fault finding (integrated into the diagnostic tool), Dialogys.
Wiring Diagrams:
–Visu-Schéma (CD-ROM), paper version.
Type of diagnostic tools
–CLIP
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, entry level, 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,
–connect the diagnostic tool and perform the desired operations.
To cut off + after ignition feed, 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: Scenic II
Function concerned: air conditioning
SPECIAL TOOLING REQUIRED
Multimeter
Elé. 1681Universal bornier
Note:
The left-hand and right-hand xenon bulb computers are powered when the dipped beam headlights light up. Fault
finding procedures can only be carried out on them after the ignition has been switched on in fault finding mode
(forced + after ignition feed) and the dipped headlights are on.
CLIM X84 1.1
Edition 2
MR-372-J84-62A000$020.mif

62A - 4
AIR CONDITIONING
Fault finding - Introduction62A
V4
Manual air conditioning
and
Climate control
Faults
Faults are declared either present or stored (depending on whether they appeared in a certain situation and have
disappeared since, or whether they remain but have not been diagnosed within the current context).
The present or stored status of faults should be taken into consideration when the diagnostic tool is used after the
+ after ignition feed has been supplied (without acting on the system components).
For a present fault, apply the procedure described in the Interpretation of faults section.
For a stored fault, note the faults displayed and apply the notes section.
If the fault is confirmed when the Notes are applied, the fault is present. Deal with the fault
If the fault is not confirmed, check:
–the electrical lines which correspond to the fault,
–the connectors for these lines (for oxidation, bent pins, etc),
–the resistance of the component detected as faulty,
–The condition of the wires (insulation melted or split, chafing, etc.).
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 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
subsystems, heater, cold loop, user selection and passenger compartment ventilation.
The statuses and parameters related to these sub-functions are listed with their respective computers.
NOTE: 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.
Customer complaints – Fault finding charts
If the test with the diagnostic tool is OK, but the customer complaint persists, the fault should be treated by
customer complaints. 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. By contrast,
signals from other computers are explained in the "fault finding" sections for these computers (see the conformity
check).
A synopsis of the general procedure to follow is provided on the following
page in the form of a flowchart.
CLIM X84 1.1
Edition 2
MR-372-J84-62A000$020.mif

62A - 17
AIR CONDITIONING
Fault finding - Conformity check62A
V4
Manual air conditioning
and
Climate controlAIR CONDITIONING
Fault finding - Conformity check
Subsystem: cold loop
NOTESOnly carry out this conformity check after a full check with the diagnostic tool (fault
reading and configuration checks).
Test conditions: ignition on (12
volts APC), engine stopped, AIR CONDITIONING
SWITCHED OFF (passenger compartment blower switched off and air conditioning
compressor not engaged).
NOTE: To check that the temperature parameters are correct (without a thermometer),
read these parameters when the vehicle is cold (in the morning). The temperatures
should be approximately equal (interior, exterior and engine coolant).
Fault finding procedures for the statuses, parameters and commands listed in this
check are explained in the Technical Notes relating to the computer which generates
the signal (see the Introduction section).
Computer
(signal generator)Parameter or status
checked or actionDisplay and Notes Fault finding
Climate controlET143:Air conditioning
request 1.ACTIVE for air conditioning
request (AC button pressed
or AUTO button pressed
with "maximum cold"
request).
INACTIVE otherwise.
NOTE: This status is only
valid for climate control
systems.If there is a fault, refer to the
fault finding procedure
for this status.
NOTE: This status
represents the request from
the climate control
computer to the UCH to
engage the compressor
(refer to the flowchart in
the general operation
section).
PR001:Interior
temperature.X = interior temperature
± 5 ˚C
(invalid value: 87.5 ˚C)If there is a fault, refer to the
fault finding procedure
for this parameter.
ET141:Passenger
compartment
blower.STOPPED
(according to test
conditions: see Notes).If there is a fault, refer to the
fault finding procedure
for this status.
NOTE: This status is only
operative for climate
control systems.
PR012:Mixing flap
position.0% = Max. cold position
(15 ˚C)
100% = Max. warm position
(27 ˚C)If there is a fault, refer to the
fault finding procedure
for this parameter.
PR006:Solar radiation.0 watts (no solar radiation)
to 400 watts (maximum
solar radiation).If there is a fault, refer to the
fault finding procedure
for this parameter.
CLIM X84 1.1
Edition 2
MR-372-J84-62A000$060.mif

62A - 22
AIR CONDITIONING
Fault finding - Conformity check62A
V4
Manual air conditioning
and
Climate control
Subsystem: heating
NOTESOnly carry out this conformity check after a full check with the diagnostic tool (fault
reading and configuration checks).
Test conditions: ignition on (12
volts APC), engine stopped, AIR CONDITIONING
SWITCHED OFF (passenger compartment blower switched off and air conditioning
compressor not engaged).
NOTE: To check that the temperature parameters are correct (without a thermometer),
read these parameters when the vehicle is cold (in the morning). The temperatures
should be approximately equal (interior, exterior and engine coolant).
Fault finding procedures for the statuses, parameters and commands listed in this
check are explained in the Technical Notes relating to the computer which generates
the signal (see the Introduction section).
Computer
(signal generator)Parameter or status
checked or actionDisplay and Notes Fault finding
Climate controlET086:Heated rear
screen: manual
mode.ACTIVE: De-icing button at
the bottom of the control
panel pressed.
INACTIVE otherwise.If there is a fault, refer to the
fault finding procedure
for this status.
ET085:Heated rear
screen: auto
mode.ACTIVE: De-icing button at
the top of the control panel
pressed ("See clear"
function).
INACTIVE otherwise.If there is a fault, refer to the
fault finding procedure
for this status.
PR121:Blown air
temperature
setpoint.0 < X < 80 ˚C.If there is a fault, refer to the
fault finding procedure
for this parameter.
PR001:Interior
temperature.X = interior temperature
± 5 ˚C
(invalid value: 87.5 ˚C).If there is a fault, refer to the
fault finding procedure
for this parameter.
PR012:Mixing flap
position.0 % = Max. cold position (15
˚C)
100 % = Max. hot position
(27 ˚C)If there is a fault, refer to the
fault finding procedure
for this parameter.
ET141:Passenger
compartment
blower.OFF
(according to test
conditions: see Notes).If there is a fault, refer to the
fault finding procedure
for this status.
NOTE: This status is only
operative for climate
control systems.
CLIM X84 1.1
Edition 2
MR-372-J84-62A000$060.mif

62A - 26
AIR CONDITIONING
Fault finding - Conformity check62A
V4
Manual air conditioning
and
Climate control
Subsystem: user selection
NOTESOnly carry out this conformity check after a full check with the diagnostic tool (fault
reading and configuration checks).
Test conditions: ignition on (12
volts APC), engine stopped, AIR CONDITIONING
SWITCHED OFF (passenger compartment blower switched off and air conditioning
compressor not engaged).
NOTE: The interpretation of the statuses, parameters and controls listed in this check
is explained in the Technical Notes relating to the computer which generates the signal
(see the Introduction section).
Computer
(signal generator)Parameter or status
checked or actionDisplay and Notes Fault finding
Climate controlET086:Heated rear
screen: manual
mode.ACTIVE: De-icing button at
the bottom of the control
panel pressed.
INACTIVE otherwise.If there is a fault, refer to the
fault finding procedure
for this status.
ET085:Heated rear
screen: auto
mode.ACTIVE: De-icing button at
the top of the control panel
pressed ("See clear"
function).
INACTIVE otherwise.If there is a fault, refer to the
fault finding procedure
for this status.
ET143:Air conditioning
request 1.ACTIVE for air conditioning
request (AC button pressed
or AUTO button pressed
with "maximum cold"
request).
INACTIVE otherwise.
Note: This status is only
valid for climate control
systems.If there is a fault, refer to the
fault finding procedure
for this status.
NOTE: This status
represents the request from
the climate control
computer to the Passenger
Compartment Control Unit
to engage the compressor
(refer to the flowchart in
the general operation
section).
CLIM X84 1.1
Edition 2
MR-372-J84-62A000$060.mif

62A - 28
AIR CONDITIONING
Fault finding - Conformity check62A
V4
Manual air conditioning
and
Climate control
Subsystem: passenger compartment ventilation
NOTESOnly carry out this conformity check after a full check with the diagnostic tool (fault
reading and configuration checks).
Test conditions: ignition on (12
volts APC), engine stopped, AIR CONDITIONING
SWITCHED OFF (passenger compartment blower switched off and air conditioning
compressor not engaged).
NOTE: To check that the temperature parameters are correct (without a thermometer),
read these parameters when the vehicle is cold (in the morning). The temperatures
should be approximately equal (interior, exterior and engine coolant). Fault finding
procedures for the statuses, parameters and commands listed in this check are
explained in the Technical Notes relating to the computer which generates the signal
(see the Introduction section).
Computer
(signal generator)Parameter or status
checked or actionDisplay and Notes Fault finding
Climate controlPR019:Passenger
compartment
blower PWM
setpoint.Speed 0 = 0 %.
Speed 8 = 100 %.
NOTE: The "PWM" signal is
a modulated control voltage
used to control the
passenger compartment
blower power module.If there is a fault or for more
information (to find the
intermediate speed
percentages), refer to the
fault finding procedure
for this parameter.
PR012:Mixing flap
position.0 % = Max. cold position (15
˚C)
100 % = Max. warm
position (27 ˚C)If there is a fault, refer to the
fault finding procedure
for this parameter.
ET062:Recirculation flap
position.OPEN if the flap is in the
outside air position.
CLOSED if the flap is in the
recirculation position.If there is a fault, refer to the
fault finding procedure
for this status.
PR011:Distribution flap
position.from 0 % to 100 %.
NOTE:
0 % = Full air vents position
100 % = De-icing position.If there is a fault or for more
information (various flap
opening values according
to the user selection), refer
to the fault finding
procedure for this
parameter.
CLIM X84 1.1
Edition 2
MR-372-J84-62A000$060.mif