lock 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 - 12
AIR CONDITIONING
Fault finding - Mode of operation62A
V4MR-372-J84-62A000$010.mif
Manual air conditioning
and
Climate control
Block diagram of components controlled or managed by the control panel of heater
versions without air conditioning
Ventilation unit
Passenger
compartment
blower
Resistor
unitRecircu-
lation flapDistribution
flapMixing
flap
Vehicle multiplex
network
Actuator control
user control panel
Button lights (heated rear
screen button)Passenger
compartment blower
operation signal
(running or stopped)User request
management (heated
rear screen button
pressed)
UCH
Transmission of the request
to switch on the heated rear
screen
Key:
Wire connections =
Multiplex connections =
Mechanical connections =
(cable controls)
CLIM X84 1.1
Edition 2
MR-372-J84-62A000$040.mif

62A - 15
AIR CONDITIONING
Fault finding - Mode of operation62A
V4MR-372-J84-62A000$010.mif
Manual air conditioning
and
Climate control
Compressor control flowchart
ET143 Air
conditioning request 1
(climate control)Climate control panelET029 Air
conditioning button
(manual air
conditioning)
ET030 Air
conditioning request 2UCH
ET088 Compressor
engagement requestInjection computer
ET004 Air conditioning
authorisation
UPC
(Power and Switching Unit)
Control via wire
connection
Special notes:
This flowchart shows the path of the
compressor engagement request.
Components which may block this request
are not listed (passenger compartment
blower operation signal for the UCH on
manual air conditioning version, correct
refrigerant fluid pressure for the injection,
etc.).
If the compressor does not engage (one of
the requests not transmitted): carry out a
conformity check. Climate
control
compressor
Key:
Multiplex signals.
Wire connections.
CLIM X84 1.1
Edition 2
MR-372-J84-62A000$040.mif

AIR CONDITIONING
Fault finding - Fault Finding Chart62A
62A-46V4 MR-372-J84-62A000$080.mif
Manual air conditioning
and
Climate control
ALP 6
CONTINUED
With the engine warm and
passenger compartment ventilation
operating, vary the position of the
mixing flap from the very cold
position to the very hot position and
check subjectively that there is a
difference in temperature.
Can you feel the difference in
temperature?
YES
NOFor climate control systems:
Carry out a conformity check on the mixing motor
(PR012 Mixing motor). If the conformity check does not
reveal any faults, look for a mechanical fault with the
mixing flap (condition of the motor's toothed sector, flap
jammed inside the unit, etc.).
For manual air conditioning and heater versions:
Check the condition and routing of the mixing flap
control cable. Eliminate any constraints on it: kinks,
cable restricted by plastic clips, etc. Replace it if
necessary. Unclip the cable from the side of the unit and
check the stiffness of movement of each component:
control button and flap control on the air distribution unit.
Check that there is no mechanical fault with the mixing
flap (flap jammed inside the unit, etc.).
Carry out any necessary repairs.
Is the fault still present?
YES
Is the lower heater matrix pipe
(coolant inlet) hot?
NOTE: Pipe located on the left-hand
side of the heater-air conditioning
unit, near the engine bulkhead.
YES
Check that the heater matrix is not blocked: The top heater matrix pipe should be hot.
NOTE: Pipe located on the left-hand side of the heater-air conditioning unit, near the engine
bulkhead. Clean the heater matrix or replace it if necessary.
Is the fault still present?
YES NO
If the vehicle is fitted with passenger compartment heating
resistors (RCH), check that these are operating correctly by
referring to the fault finding procedure in the UCH Technical Note.
NOCarry out a check on the coolant circuit and
ensure that the thermostatic valve opens at the
correct temperature.
Replace the valve if necessary.
NO
End of fault finding procedure.
AFTER REPAIRPerform a complete check using the diagnostic tool.
CLIM X84 1.1
Edition 2