RENAULT SCENIC 2010 J95 / 3.G Air Conditioning User Guide

62A - 11
AIR CONDITIONING
Fault finding - Mode of operation62A
V4MR-372-J84-62A000$010.mif
Manual air conditioning
and
Climate control
Summary of components controlled or managed by the manual air conditioning computer
Ventilation and climate control unit
Passenger
compartment
blower
Resistor
unitRecircu-
lation flapDistribution
flapMixing
flap
Vehicle multiplex
network
Actuator control
Manual air conditioning computer
(control panel)
Button lights
(air conditioning button
and heated rear screen
button)Passenger
compartment blower
operation signal
(running or stopped)User request
management
(air conditioning button
and heated rear screen
button pressed)
UCH
Transmission of requests
(air conditioning, 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 - 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 - 13
AIR CONDITIONING
Fault finding - Mode of operation62A
V4MR-372-J84-62A000$010.mif
Summary of components controlled or managed by the UCH
Summary of components controlled or managed by the Protection and Switching Unit
Passenger
compartment
heating
resistors (RCH)
relay No. 2 Passenger
compartment
heating
resistors (RCH)
relay No. 1 Passenger compartment
heating resistors (RCH)
relay No. 3 (Scénic only)Exterior
temperature
sensor
Vehicle
multiplex
network
Actuator control Sensor management
UCH
Air conditioning request
managementHeated rear screen
control
managementPassenger compart-
ment heating resistor
control management
Engine cooling
fan unitHeated rear
screen and
heated door
mirrorsClimate control
compressorAlternator:
"DF"
terminal
Actuator control Electrical availability management
UPC
"DF" terminal signal formatting
(alternator charge)
Key:
Wire connections =
Multiplex connections =
Manual air conditioning
and
Climate control
CLIM X84 1.1
Edition 2
MR-372-J84-62A000$040.mif

62A - 14
AIR CONDITIONING
Fault finding - Mode of operation62A
V4MR-372-J84-62A000$010.mif
Manual air conditioning
and
Climate control
Summary of components controlled or managed by the injection computer
Refrigerant fluid
pressure sensorEngine coolant
temperature
sensorVehicle
multiplex
network
Sensor management
Engine injection computer
Management of the cold loop (refrigerant fluid pressure,
switch on engine cooling fan request, compressor
engagement authorisation, etc.)Passenger compartment
heating resistors (RCH)
authorised power
management
Key:
Wire connections =
Multiplex connections =
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

62A - 16
AIR CONDITIONING
Fault finding - Configurations and configuration reading62A
V4
Manual air conditioning
and
Climate controlAIR CONDITIONING
Fault finding - Configurations and configuration reading
Climate control system configurations
Climate control system configuration readings
Computers Configuration Option Comment
Air conditioning (climate
control computers only)CF044 Vehicle type B84/L84/J84/E84 Manual configuration
(with CLIP)
CF117 Type of heating
resistorsWithout/1000 W/
1800 W
UCH SC008 Type of UCH Configuration scenario
(possible to register all the
UCH functions).
Injection (all types)
XXAutomatic computer
configuration
Protection and Switching
UnitCF001 Type of alternator – KCB1 90 BOSCH
–TG11 110 VALEO
–SG12 VALEO
–LIE8 150 BOSCH
–SG15L VALEO
–Other typeManual configuration
(with CLIP)
Computers Configuration reading Option Comment
Climate control LC013 Vehicle type B84/J84/E84 None
LC043 Heating resistor without/1000 W/
1800 W
UCH LC013 Type of air conditioning climate control/
manual/heatingNone
LC030 Type of heating resistorswithout/1000 W/
1500 W
LC011 Vehicle type All except E8h
S3000 injection
NOTE: These
functions are
only valid for the
S3000 injection
(K4J/K4M/F4R
and F4R
Turbocharged
enginesLC009 Air conditioning connected/not
connectedFollowing the first
compressor engagement
request:
LC009 connected
LC016 With LC016 Air conditioning pressure
signal managementwith/without
ET079 Air conditioning present yes/no ET079
LC025 Heating resistor with/without None
Protection and
Switching UnitLC001 Type of alternator – KCB1 90 BOSCH
–TG11 110 VALEO
–SG12 VALEO
–LIE8 150 BOSCH
–SG15L VALEO
–Other typeNone
CLIM X84 1.1
Edition 2
MR-372-J84-62A000$050.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 - 18
AIR CONDITIONING
Fault finding - Conformity check62A
V4
Manual air conditioning
and
Climate control
Subsystem: cold loop (continued 1)
Computer
(signal generator)Parameter or status
checked or actionDisplay and Notes Fault finding
UCHET030:Air conditioning
request 2.INACTIVE
(engagement of the
compressor is only
authorised when the engine
is running).If there is a fault, refer to the
fault finding procedure
for this status.
NOTE: This status
represents the request from
the UCH to the injection
computer to engage the
compressor (refer to the
flowchart in the general
operation section).
PR002:Exterior
temperature.X = exterior temperature
± 5 ˚C
(invalid value: 215 ˚C)If there is a fault, refer to the
fault finding procedure
for this parameter.
ET015:Passenger
compartment
blower.INACTIVE
(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 manual air
conditioning (and heating
versions without air
conditioning).
ET091:Engine running.NO
NOTE: This status is
displayed by the UCH but it
is generated by the injection
computer.If there is a fault, refer to the
fault finding procedure
for this status.
(Injection Technical Note).
InjectionET079:Air conditioning
present.YES
(automatic injection
computer configuration).If the status displays NO,
refer to the fault finding
procedure for this status.
PR064:Coolant
temperature.X = engine coolant
temperature.If there is a fault, refer to the
fault finding procedure
for this parameter.
ET004:Air conditioning
authorisation.NO
(no authorisation with
engine stopped).If there is a fault, refer to the
fault finding procedure
for this status.
CLIM X84 1.1
Edition 2
MR-372-J84-62A000$060.mif

62A - 19
AIR CONDITIONING
Fault finding - Conformity check62A
V4
Manual air conditioning
and
Climate control
Subsystem: cold loop (continued 2)
Computer
(signal generator)Parameter or status
checked or actionDisplay and Notes Fault finding
Injection
(continued 1)ET088:Compressor
activation request.INACTIVE
(engagement of the
compressor is only
authorised when the engine
is running).If there is a fault, refer to the
fault finding procedure
for this status.
NOTE: This status
represents the request from
the injection computer to
the Protection and
Switching Unit to engage
the compressor (refer to the
flowchart in the general
operation section).
PR089:Vehicle speed.0 mph or km/h If there is a fault, refer to the
fault finding procedure
for this parameter.
PR055:Engine speed.0 rpm.If there is a fault, refer to the
fault finding procedure
for this parameter.
ET023:Fast idle request
(except EDC 16
injection).ABSENTIf there is a fault: refer to the
fault finding procedure
for this status.
NOTE: This status is not
displayed by the EDC16
injection (F9Q engine).
PR053:Engine speed
required by air
conditioning
(except S3000 and
DDCR injections).0 rpm.If there is a fault, refer to the
fault finding procedure
for this parameter.
NOTE: This parameter is
only displayed by the
EDC16 injection (F9Q
engine).
PR037:Refrigerant
pressure.1 bar < X < 35 barIf there is a fault, refer to the
fault finding procedure
for this parameter.
PR125:Power absorbed
by AC
compressor.0 W < X < 300 W
(ambient temperature
23 ˚C)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 - 20
AIR CONDITIONING
Fault finding - Conformity check62A
V4
Manual air conditioning
and
Climate control
Subsystem: cold loop (continued 3)
Computer
(signal generator)Parameter or status
checked or actionDisplay and Notes Fault finding
Injection
(continued 2)ET022:Low speed fan
request (except
3000 injection)INACTIVE
NOTE: This status is not
displayed by the S3000
injection (K4J, K4M, F4R
and F4RT engines).If there is a fault, refer to the
fault finding procedure
for this status.
–For more information
(Control of Fan 1 or
Fan 2 according to
vehicle speed and
refrigerant fluid
pressure), refer to the
HELP section (62B).
ET021:High speed fan
request (except
S3000 injection).INACTIVE
NOTE: This status is not
displayed by the S3000
injection (K4J, K4M, F4R
and F4RT engines).If there is a fault, refer to the
fault finding procedure
for this status.
–For more information
(Control of Fan 1 or
Fan 2 according to
vehicle speed and
refrigerant fluid
pressure), refer to the
HELP section (62B).
ET014:Fan unit 1 check
(except DDCR
injection).STOPPEDIf there is a fault, refer to the
fault finding procedure
for this status.
NOTE: This status is not
displayed by the DDCR
injection (K9K engine).
ET015:Fan unit 2 check
(except DDCR
injection).STOPPEDIf there is a fault, refer to the
fault finding procedure
for this status.
NOTE: This status is not
displayed by the DDCR
injection (K9K engine).
CLIM X84 1.1
Edition 2
MR-372-J84-62A000$060.mif