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

62A - 9
AIR CONDITIONING
Fault finding - Mode of operation62A
V4MR-372-J84-62A000$010.mif
Exchanges between the four air conditioning system computers
–air conditioning request 1 (compressor
engagement)
–switch on passenger compartment heating
resistors (RCH) request
–switch on heated rear screen request
(+ electric door mirrors)
–passenger compartment ventilation signal
Climate
control panelUCH
–passenger compartment heating resistors (RCH)
operation management
–exterior temperature signal
–engine coolant temperature signal
–switch on heated rear screen request
(+ electric door mirrors)
UCHUPC
(Power and Switching Unit)
–alternator charge signal
–number of passenger compartment heating
resistors authorised by alternator
–air conditioning request 2 (compressor
engagement)
–fast idle request for passenger compartment
heating resistors (RCH)
UCHInjection computer
–compressor engagement authorisation
–engine coolant temperature signal
–refrigerant fluid pressure signal
–number of passenger compartment heating
resistors authorised by injection
–compressor engagement request
–switch on engine cooling fan request
Injection computerUPC
(Power and Switching Unit)
–alternator charge signal
Manual air conditioning
and
Climate control
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 - 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 - 24
AIR CONDITIONING
Fault finding - Conformity check62A
V4
Manual air conditioning
and
Climate control
Subsystem: heating (continued 2)
Computer
(signal generator)Parameter or status
checked or actionDisplay and Notes Fault finding
UCH
(continued)ET018:Number RCH
authorised by
alternator.0
(Inhibited with engine
stopped).If there is a fault, refer to the
fault finding procedure
for this status.
ET019:Number RCH
authorised by
injection.0
(Inhibited with engine
stopped).If there is a fault, refer to the
fault finding procedure
for this status.
ET020:Number RCH
actuated.0
(Inhibited with engine
stopped).If there is a fault, refer to the
fault finding procedure
for this status.
ET021:RCH no. 1 control
relay.INACTIVE
(Inhibited with engine
stopped).If there is a fault, refer to the
fault finding procedure
for this status.
ET022:RCH no. 2 control
relay.INACTIVE
(Inhibited with engine
stopped).If there is a fault, refer to the
fault finding procedure
for this status.
ET023:RCH no. 3 control
relay (Mégane
Scénic and
Scénic 4x4 only).INACTIVE
(Inhibited with engine
stopped).If there is a fault, refer to the
fault finding procedure
for this status.
NOTE: This status is
inoperative for Mégane
saloons and Mégane sport
hatches.
AC016:RCH no. 1 relay. Commands for testing the
operation of the RCH
(passenger compartment
air heating resistors). The
number of RCH stages
switched on depends on the
number of relays actuated.
NOTE: RCH no. 3 relay is
only fitted to Mégane
Scénics.If there is a fault, refer to the
fault finding procedure
for these controls.
NOTE: To find the relays
actuated/number of RCH
engaged correlation, refer
to the "general operation"
section of the UCH
Technical Note. AC017:RCH no. 2 relay.
AC018:RCH no. 3 relay
(Mégane Scénic
only).
CLIM X84 1.1
Edition 2
MR-372-J84-62A000$060.mif

62A - 25
AIR CONDITIONING
Fault finding - Conformity check62A
V4
Manual air conditioning
and
Climate control
Subsystem: heating (continued 3)
Computer
(signal generator)Parameter or status
checked or actionDisplay and Notes Fault finding
InjectionET024:Set number of
RCH.NO
NOTE: According to the
injection's requirements:
power requirement, torque
reduction, etc., the injection
computer sets the number
of RCH stages switched on
(no more, no less).If there is a fault, 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.
Protection and
Switching UnitPR002:Alternator charge
signal99 %, engine stopped.If there is a fault, refer to the
fault finding procedure
for this parameter.
AC011:Heated rear
screen.Command for testing the
operation of the rear screen
heating.If there is a fault, consult the
fault finding procedure
for this command.
NOTE: The UPC cannot
test the heated rear screen
control circuit; this
command is the only way to
test its operation.
CLIM X84 1.1
Edition 2
MR-372-J84-62A000$060.mif

62A - 37
AIR CONDITIONING
Fault finding - Conformity check62A
V4
Manual air conditioning
and
Climate control
Subsystem: heating (continued 2)
Computer
(signal generator)Parameter or status
checked or actionDisplay and Notes Fault finding
UCH
(continued 1)ET018:Number RCH
authorised by
alternator.0, 1, 2 or 3 for Mégane
saloons and sport hatches
(1000 watt RCH).
0, 1, 2, 3, 4 or 5 for Mégane
Scénics (1800 watt RCH).
(depending on the electrical
availability).If there is a fault, refer to the
fault finding procedure
for this status.
ET019:Number RCH
authorised by
injection.0, 1, 2 or 3 for Mégane
saloons and sport hatches
(1000 watt RCH).
0, 1, 2, 3, 4 or 5 for Mégane
Scénics (1800 watt RCH).
(according to the injection's
requirements: power
requirement, torque
reduction, etc.).If there is a fault, refer to the
fault finding procedure
for this status.
ET020:Number RCH
actuated.0, 1, 2 or 3 for Mégane
saloons and sport hatches
(1000 watt RCH).
0, 1, 2, 3, 4 or 5 for Mégane
Scénics (1800 watt RCH).
(depending on statuses
"ET017, ET018 and
ET019").If there is a fault, refer to the
fault finding procedure
for this status.
ET021:RCH no. 1 control
relay.ACTIVE or INACTIVE
(depending on status
ET020).If there is a fault, refer to the
fault finding procedure
for this status.
ET022:RCH no. 2 control
relay.ACTIVE or INACTIVE
(depending on status
ET020).If there is a fault, refer to the
fault finding procedure
for this status.
ET023:RCH no. 3 control
relay (Mégane
Scénic and
Scénic 4x4 only).ACTIVE or INACTIVE
(depending on status
ET020).If there is a fault, refer to the
fault finding procedure
for this status.
NOTE: This status is
inoperative for Mégane
saloons and Mégane sport
hatches.
CLIM X84 1.1
Edition 2
MR-372-J84-62A000$060.mif

62A - 38
AIR CONDITIONING
Fault finding - Conformity check62A
V4
Manual air conditioning
and
Climate control
Subsystem: heating (continued 3)
Computer
(signal generator)Parameter or status
checked or actionDisplay and Notes Fault finding
UCH
(continued 2)AC016:RCH no. 1 relay. Commands for testing the
operation of the RCH
(passenger compartment
air heating resistors). The
number of RCH stages
switched on depends on the
number of relays actuated.
NOTE: RCH no. 3 relay is
only fitted to Mégane
Scénics.If there is a fault, refer to the
fault finding procedure
for these controls.
NOTE: To find the relays
actuated/number of RCH
engaged correlation, refer
to the "general operation"
section of the UCH
Technical Note. AC017:RCH no. 2 relay.
AC018:RCH no. 3 relay.
(Mégane Scénics
only)
InjectionET024:Set number of
RCH.YES or NO
NOTE: According to the
injection's requirements:
power requirement, torque
reduction, etc., the injection
computer sets the number
of RCH stages switched on
(no more, no less).If there is a fault, 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.
Protection and
Switching UnitPR002:alternator charge
signal0 < X <100 %
–0 % = zero electrical
consumption.
–100 % = maximum
electrical consumption.If there is a fault, refer to the
fault finding procedure
for this parameter.
AC011:Heated rear
screen.Command for testing the
operation of the rear screen
heating.If there is a fault, consult the
fault finding procedure
for this command.
NOTE: The UPC cannot
test the heated rear screen
control circuit; this
command is the only way to
test its operation.
CLIM X84 1.1
Edition 2
MR-372-J84-62A000$060.mif