key RENAULT TWINGO RS 2009 2.G Heating And Air Conditioning - Heating Workshop Manual

61A-8
MR-413-X44-61A000$500_eng.mif
V1
61A
HEATING
Fault finding - Function
Summary of components controlled by the heating control panel and passenger compartment fan:
Ventilation unit
Passenger com-
partment blower
Resistor unitRecirculation
flapDistribution flapMixing flap
Actuator control
User control panel
User request
management (heated
rear screen button
pressed)
Button lighting (heated
rear screen button)
Passenger
compartment blower
operation signal
(running or stopped)
UCH
Transmission of the
request to switch on
the heated rear screen
Key:
Wire connections =
Multiplex connections =
Mechanical connections =
(Cable controls)
Vehicle
multiplex
network
MR-413-X44-61A000$500_eng.mif

61A-9
MR-413-X44-61A000$500_eng.mif
V1
HEATING
Fault finding - Function61A
Summary diagram of components controlled or managed by the UCH:
Summary diagram of components controlled or managed by the injection computer:Rear screen de-icing and
rear-view mirror de-icer
(depending on version)External temperature sensor
(depending on version)
Actuator controlSensor management
UCH
Heated rear screen control
management
Relay No. 1 for the
Passenger
Compartment
Heating resistorsRelay No. 2 for
the Passenger
Compartment
Heating
resistorsEngine cooling
fan assemblyEngine coolant
temperature sensor
Actuator controlSensor
management
Engine injection computer
Management of the additional heater (heater resistor control) depending on the equipment
Key:
Wire connections =
Multiplex connections =
Vehicle
multiplex
network

61A-13
MR-413-X44-61A000$625_eng.mif
V1
HEATING
Fault finding - Conformity check61A
SUB-FUNCTION: USER SELECTION
NOTESOnly carry out this conformity check after a complete check with the diagnostic tool
(fault reading and configuration checks).
Test conditions: engine stopped, ignition on.
ComputerParameter or Status
checked or ActionDisplay and Notes Fault finding
UCH (see 87B,
Passenger
compartment
connection unit)ET028: Heated rear
screen buttonPRESSED if the heated
rear screen key on the air
conditioning control panel is
pressed.
RELEASED otherwise.In the event of a fault, refer to the
interpretation of this status.
Note: This status only operates for
manual air conditioning and heating
versions.
ET015: Passenger
compartment
blowerINACTIVE
(according to test
conditions: see Notes).In the event of a fault, refer to the
interpretation of this status.
Note: This status only operates for
manual air conditioning and heating
versions.

61A-16
MR-413-X44-61A000$625_eng.mif
V1
HEATING
Fault finding - Conformity check61A
SUB-FUNCTION: USER SELECTION
NOTESOnly carry out this conformity check after a complete check with the diagnostic tool
(fault reading and configuration checks).
Application conditions: engine at idle speed, vehicle speed zero.
ComputerParameter or Status
checked or ActionDisplay and
notesFault finding
UCH (see 87B,
Passenger
compartment
connection unit)ET028:Heated rear
screen buttonPRESSED if the heated rear
screen key on the air conditioning
control panel is pressed.
RELEASED otherwise.In the event of a fault, refer to the
interpretation of this status.
ET015:Passenger
compartment
blowerACTIVE
(according to test conditions:
see Notes).In the event of a fault, refer to the
interpretation of this status.