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

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 - 21
AIR CONDITIONING
Fault finding - Conformity check62A
V4
Manual air conditioning
and
Climate control
Subsystem: cold loop (continued 4)
Computer
(signal generator)Parameter or status
checked or actionDisplay and Notes Fault finding
Protection and
Switching UnitET007:High speed fan
control.INACTIVE
(On Mégane saloons and
sport hatches this status is
always
ACTIVE: ignore it
).If there is a fault, refer to the
fault finding procedure
for this status.
NOTE: This status is only
operative on Mégane
Scénics (2 engine cooling
fans and Fan unit 2 relay
outside the UPC).
AC008:Compressor
control.Command for testing the
operation of the air
conditioning compressor
clutch.If there is a fault, consult the
fault finding procedure
for this command.
NOTE: The UPC cannot
test the compressor control
circuit; this command is the
only way to test its
operation.
AC009:Low speed fan
unit.Command for testing the
low speed operation of the
engine cooling fan unit
(Fan unit 1).If there is a fault, consult the
fault finding procedure
for this command.
NOTE: The UPC cannot
test the control circuit for
Fan unit 1; this command is
the only way to test its
operation.
AC010:High speed fan
unitCommand for testing the
high speed operation of
the engine cooling fan unit
(Fan unit 2).If there is a fault, consult the
fault finding procedure
for this command.
NOTE: On Mégane saloons
and sport hatches the UPC
cannot test the control
circuit for Fan unit 2; this
command is the only way to
test its operation.
On Mégane Scénics, the
Fan unit 2 control relay is
outside the UPC and its
control line is tested by
(DF002 High speed fan
control relay circuit).
CLIM X84 1.1
Edition 2
MR-372-J84-62A000$060.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 - 34
AIR CONDITIONING
Fault finding - Conformity check62A
V4
Manual air conditioning
and
Climate control
Subsystem: cold loop (continued 4)
Computer
(signal generator)Parameter or status
checked or actionDisplay and Notes Fault finding
Protection and
Switching UnitET007:High speed fan
control.INACTIVE
(On Mégane saloons and
sport hatches this status is
always ACTIVE: ignore it
).If there is a fault, refer to the
fault finding procedure
for this status.
NOTE: This status is only
operative on Mégane
Scénics (2 engine cooling
fans and Fan unit 2 relay
outside the UPC).
AC008:Compressor
control.Command for testing the
operation of the air
conditioning compressor
clutch.If there is a fault, consult the
fault finding procedure
for this command.
NOTE: The UPC cannot
test the compressor control
circuit, this command is the
only way to test its
operation.
AC009:Low speed fan
unit.Command for testing the
low speed operation of the
engine cooling fan unit
(Fan 1).If there is a fault, consult the
fault finding procedure
for this command.
NOTE: The UPC cannot
test the control circuit for
Fan unit 1; this command is
the only way to test its
operation.
AC010:High speed fan
unitCommand for testing the
high speed operation of
the engine cooling fan unit
(Fan 2).If there is a fault, consult the
fault finding procedure
for this command.
NOTE: On Mégane saloons
and sport hatches the UPC
cannot test the control
circuit for Fan unit 2; this
command is the only way to
test its operation.
On Mégane Scénics, the
Fan unit 2 control relay is
outside the UPC and its
control line is tested by
(DF002 High speed fan
control relay circuit).
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