2009 RENAULT TWINGO RS cooling

61A-31
HEATING
Distribution unit: Removal - Refitting
STANDARD HEATING
61A
aRefit the air outlet pipe onto the air filter unit.
aFit the air filter unit air inlet pipe.
aRefit:
-the scoop under the scuttle panel grille (see Scoop
under the scuttle panel grille: Removal - Refit-
ting) (56A, Exterior equipment),
-the scuttle panel grille (see Scuttle panel grille:
Removal - Refitting) (56A, Exterior equipment),
-the windscreen wiper arms (see Windscreen wip-
er arm: Removal - Refitting) (85A, Wiping -
Washing).
aConnect the battery (see Battery: Removal - Refit-
ting) (80A, Battery).
aUnlock the airbag computer using the Diagnostic
tool (see Fault finding - Replacement of compo-
nents) (88C, Airbags and pretensioners).
aFill up and bleed the cooling system (see Cooling
system: Draining - Refilling) (19A, Cooling).
aCheck the cooling circuit (see Engine cooling sys-
tem: Check) (19A, Cooling). D7F

61A-36
HEATING
Distribution unit: Removal - Refitting
AIR CONDITIONING
61A
aRefit the storage compartment.
aRefit the radio (see Radio: Removal - Refitting)
(86A, Radio).
aRefit the tweeters (see Tweeter: Removal - Refit-
ting) (86A, Radio).
aRefit:
-the control panel (see 61A, Heating, Control pan-
el: Removal - Refitting, page 61A-65) ,
-the instrument panel (see Instrument panel: Re-
moval - Refitting) (83A, Instrument panel),
-the passenger front airbag (see Passenger's fron-
tal airbag: Removal - Refitting) (88C, Airbags
and pretensioners),
-the steering column switch assembly (see Steer-
ing column switch assembly: Removal - Refit-
ting) (84A, Control - Signals),
-the steering wheel (see Steering wheel: Removal
- Refitting) (36A, Steering assembly),
-the driver's front airbag (see Driver's frontal air-
bag: Removal - Refitting) (88C, Airbags and seat
belt pretensioners).
aRefit the rev counter (see Rev counter: Removal -
Refitting) (83A, Instrument panel).
aConnect:
-the air filter unit air inlet pipe onto the air filter unit,
-the heater matrix inlet and outlet hoses.aFit the heater matrix inlet and outlet hose clips using
the (Mot. 1448) or (Mot. 1202-01) or (Mot. 1202-
02).
aRemove the (Ms. 583) on the heater matrix inlet and
outlet hoses.
aRefit the air outlet pipe onto the air filter unit.
aFit the air filter unit air inlet pipe.
aRemove the plugs from the openings.
aFit the connecting pipes.
aRefit:
-the bolt to the expansion valve - compressor con-
necting pipe,
-the bolt to the condenser - expansion valve con-
necting pipe.
aRefit:
-the scoop under the scuttle panel grille (see Scoop
under the scuttle panel grille: Removal - Refit-
ting) (56A, Exterior equipment),
-the scuttle panel grille (see Scuttle panel grille:
Removal - Refitting) (56A, Exterior equipment),
-the windscreen wiper arms (see Windscreen wip-
er arm: Removal - Refitting) (85A, Wiping -
Washing).
aConnect the battery (see Battery: Removal - Refit-
ting) (80A, Battery).
aUnlock the airbag computer using the Diagnostic
tool (see Fault finding - Replacement of compo-
nents) (88C, Airbags and pretensioners).
aFill up and bleed the cooling system (see Cooling
system: Draining - Refilling) (19A, Cooling).
aCheck the cooling circuit (see Engine cooling sys-
tem: Check) (19A, Cooling).
aConsult the refrigerant and oil quantity values before
filling the circuit (see 62A, Air conditioning, Air
conditioning: Parts and consumables for the re-
pair, page 62A-2) .
aFill the refrigerant circuit using the refrigerant
charging station (see 62A, Air conditioning, Re-
frigerant circuit: Draining - Filling, page 62A-8) .
aCheck that the air conditioning system is operating
correctly (see 62A, Air conditioning, Air condi-
tioning: Check, page 62A-4) . WITH 2 SPEAKERS, WITHOUT RADIO or VEHI-
CLE WITHOUT RADIO
RADIO NO. 01 or RADIO NO. 03
WITH 2 SPEAKERS, WITHOUT RADIO or RADIO
NO. 01 or RADIO NO. 03
ENGINE REV COUNTER
D7F

61A-42
HEATING
Distribution unit: Removal - Refitting
CLIMATE CONTROL
61A
aRefit the storage compartment.
aRefit the radio (see Radio: Removal - Refitting)
(86A, Radio).
aRefit the tweeters (see Tweeter: Removal - Refit-
ting) (86A, Radio).
aRefit:
-the control panel (see 61A, Heating, Control pan-
el: Removal - Refitting, page 61A-65) ,
-the instrument panel (see Instrument panel: Re-
moval - Refitting) (83A, Instrument panel),
-the passenger front airbag (see Passenger's fron-
tal airbag: Removal - Refitting) (88C, Airbags
and pretensioners),
-the steering column switch assembly (see Steer-
ing column switch assembly: Removal - Refit-
ting) (84A, Control - Signals),
-the steering wheel (see Steering wheel: Removal
- Refitting) (36A, Steering assembly),
-the driver's front airbag (see Driver's frontal air-
bag: Removal - Refitting) (88C, Airbags and seat
belt pretensioners).
aRefit the rev counter (see Rev counter: Removal -
Refitting) (83A, Instrument panel).
aConnect:
-the air filter unit air inlet pipe onto the air filter unit,
-the heater matrix inlet and outlet hoses.aFit the heater matrix inlet and outlet hose clips using
the (Mot. 1448) or (Mot. 1202-01) or (Mot. 1202-
02).
aRemove the (Ms. 583) on the heater matrix inlet and
outlet hoses.
aRefit the air outlet pipe onto the air filter unit.
aFit the air filter unit air inlet pipe.
aRemove the plugs from the openings.
aFit the connecting pipes.
aRefit:
-the bolt to the expansion valve - compressor con-
necting pipe,
-the bolt to the condenser - expansion valve con-
necting pipe.
aRefit:
-the scoop under the scuttle panel grille (see Scoop
under the scuttle panel grille: Removal - Refit-
ting) (56A, Exterior equipment),
-the scuttle panel grille (see Scuttle panel grille:
Removal - Refitting) (56A, Exterior equipment),
-the windscreen wiper arms (see Windscreen wip-
er arm: Removal - Refitting) (85A, Wiping -
Washing).
aConnect the battery (see Battery: Removal - Refit-
ting) (80A, Battery).
aUnlock the airbag computer using the Diagnostic
tool (see Fault finding - Replacement of compo-
nents) (88C, Airbags and pretensioners).
aFill up and bleed the cooling system (see Cooling
system: Draining - Refilling) (19A, Cooling).
aCheck the cooling circuit (see Engine cooling sys-
tem: Check) (19A, Cooling).
aConsult the refrigerant and oil quantity values before
filling the circuit (see 62A, Air conditioning, Air
conditioning: Parts and consumables for the re-
pair, page 62A-2) .
aFill the refrigerant circuit using the refrigerant
charging station (see 62A, Air conditioning, Re-
frigerant circuit: Draining - Filling, page 62A-8) .
aCheck that the air conditioning system is operating
correctly (see 62A, Air conditioning, Air condi-
tioning: Check, page 62A-4) . WITH 2 SPEAKERS, WITHOUT RADIO or VEHI-
CLE WITHOUT RADIO
RADIO NO. 01 or RADIO NO. 03
WITH 2 SPEAKERS, WITHOUT RADIO or RADIO
NO. 01 or RADIO NO. 03
ENGINE REV COUNTER
D7F

61A-48
HEATING
Heater matrix: Removal - Refitting
LEFT-HAND DRIVE
61A
aRefit:
-the scoop under the scuttle panel grille (see Scoop
under the scuttle panel grille: Removal - Refit-
ting) (56A, Exterior equipment),
-the scuttle panel grille (see Scuttle panel grille:
Removal - Refitting) (56A, Exterior equipment),
-the windscreen wiper arms (see Windscreen wip-
er arm: Removal - Refitting) (85A, Wiping -
Washing).
aConnect the battery (see Battery: Removal - Refit-
ting) (80A, Battery).
aUnlock the airbag computer using the Diagnostic
tool (see Fault finding - Replacement of compo-
nents) (88C, Airbags and pretensioners).
aFill up and bleed the cooling system (see Cooling
system: Draining - Refilling) (19A, Cooling).
aCheck the cooling circuit (see Engine cooling sys-
tem: Check) (19A, Cooling).

61A-52
HEATING
Heater matrix: Removal - Refitting
RIGHT-HAND DRIVE
61A
-the instrument panel (see Instrument panel: Re-
moval - Refitting) (83A, Instrument panel),
-the passenger front airbag (see Passenger's fron-
tal airbag: Removal - Refitting) (88C, Airbags
and pretensioners),
-the steering column switch assembly (see Steer-
ing column switch assembly: Removal - Refit-
ting) (84A, Control - Signals),
-the steering wheel (see Centre console: Removal
- Refitting) (36A, Steering assembly),
-the driver's front airbag (see Driver's frontal air-
bag: Removal - Refitting) (88C, Airbags and seat
belt pretensioners).
aRefit the rev counter (see Rev counter: Removal -
Refitting) (83A, Instrument panel).
aRefit the air outlet pipe onto the air filter unit.
aFit the air filter unit air inlet pipe.
aConnect the air filter unit air inlet pipe on the air filter
unit.
aConnect the heater matrix inlet and outlet hoses.
aFit the heater matrix inlet and outlet hose clips using
the (Mot. 1448) or (Mot. 1202-01) or (Mot. 1202-
02).
aRemove the (Ms. 583) from the heater matrix inlet
and outlet hoses.
aRefit:
-the scoop under the scuttle panel grille (see Scoop
under the scuttle panel grille: Removal - Refit-
ting) (56A, Exterior equipment),
-the scuttle panel grille (see Scuttle panel grille:
Removal - Refitting) (56A, Exterior equipment),
-the windscreen wiper arms (see Windscreen wip-
er arm: Removal - Refitting) (85A, Wiping -
Washing).
aConnect the battery (see Battery: Removal - Refit-
ting) (80A, Battery).aUnlock the airbag computer using the Diagnostic
tool (see Fault finding - Replacement of compo-
nents) (88C, Airbags and pretensioners).
aFill up and bleed the cooling system (see Cooling
system: Draining - Refilling) (19A, Cooling).
aCheck the cooling circuit (see Engine cooling sys-
tem: Check) (19A, Cooling).
ENGINE REV COUNTER
D7F

62A-5
AIR CONDITIONING
Air conditioning: Check
AIR CONDITIONING or CLIMATE CONTROL
62A
II - VEHICLE PREPARATION OPERATION
aPut the vehicle in the shade, where the temperature
is greater than or equal to 15˚C minimum.
aClose the bonnet.
aOpen the front windows.
aStart the engine and let it idle.
aSet the air conditioning controls with:
-recirculation mode in the external position,
-the ventilation distribution in "face" mode,
-the temperature control to coldest temperature set-
ting in front (and at the back, if it exists),
-the speed of the passenger compartment fan as-
sembly set to maximum (switch off the rear control
if it exists),
-the front side and centre air vents open with the
vanes in a neutral position,
-the air conditioning system must be turned on (indi-
cator light illuminated).
aWait 5 minutes with the engine idling before tak-
ing any measurements.
III - MEASUREMENTS
aRecord the air temperature at the scuttle panel grille
(T3).
-open the bonnet, depending on the vehicle, to ac-
cess the scuttle panel grille.
-place the sensor where air is drawn through the
scuttle panel grille.-wait for the value to become stable.
-record the T3 temperature value.
-close the bonnet if it was opened.
aRecord the air temperature at the left air vent (T1),
and at the right air vent (T2).
-fit sensor T1 in the left air vent (1) .
-fit sensor T2 in the right air vent (2) .
aRecord the differences in temperature once the (∆T)
value has stabilised:
-between T3 and the higher of values T1 or T2, (T3
- highest value).
-record this difference in temperature.
-between T1 and T2 (read the (∆T) value (T1-T2)
display mode).
-record the difference in temperature (∆T) accord-
ing to the correction (∆) to be applied to the mea-
surement.
aIf the (∆T)=(T1-T2) measurement is unstable, follow
the procedure below:
119359
119357
Note:
Depending on the vehicle's air conditioning sys-
tem programming, this check method may not be
applicable because the engine cooling fan
assembly has been activated. Its operation ren-
ders the (∆Τ) value between T1 and T2 unstable.
To eliminate this error, the fan assembly must be
activated for the entire period over which temper-
ature T1 and T2 measurements are recorded.

62A-6
AIR CONDITIONING
Air conditioning: Check
AIR CONDITIONING or CLIMATE CONTROL
62A
aActivate the engine cooling fan assembly operation
by modifying the engine speed.
-stabilise the engine speed at 2000 rpm while T1
and T2 temperature measurements are being re-
corded.
-check that the engine cooling fan assembly operat-
ing.
-record the temperatures by following the instruc-
tions given in the paragraph MEASUREMENTS.
IV - FAULT FINDING PROCEDURE
aThe following two following conditions must be met:
-the difference between T3 and the higher of the two
values T1 or T2, must be greater than or equal to
5˚C,
-the difference between T1 and T2 must be less
than or equal to 2˚C.
Note:
If one of these two conditions is not met, then the
air conditioning system is not working properly.
Should this be the case, refer to the fault finding
procedure for the air conditioning system for the
vehicle concerned.

62A-9
AIR CONDITIONING
Refrigerant circuit: Draining - Filling
AIR CONDITIONING or CLIMATE CONTROL
62A
I - RECOVERING REFRIGERANT FLUID
a
When draining or checking the refrigerant fill load,
three scenarios are to be taken into account:
-the engine is running and the air conditioning is in
operation (A),
-the engine is running but the air conditioning is not
in operation (B),
-the engine is not running nor is the air conditioning
in operation (C).
aScenario A:
-Operate the air conditioning until the cooling fan
assembly is triggered twice,
-Switch off the engine,
-drain for the first time (note down the original val-
ue),
-wait 15 minutes,
-check that the relative pressure is no more than 0
bar,
-repeat the cycles until the relative pressure is equal
to or less than 0 bar,
-add together the values of the various draining op-
erations; the fill is confirmed as being correct if the
volume of refrigerant fluid is the specified fill +35g
or -100g.
Scenario B:
-run the engine until the cooling fan is triggered
twice,
-Switch off the engine,-drain for the first time (note down the value),
-wait 15 minutes,
-run the engine until the cooling fan is triggered
twice,
-Switch off the engine,
-drain for the second time (note down the value),
-repeat the cycles until the relative pressure is equal
to or less than 0 bar,
-add together the values of the various draining op-
erations; the fill is confirmed as being correct if the
volume of refrigerant fluid is the specified fill +35g
or -100g.
Scenario C:
-drain for the first time (note down the value),
-wait 2 hours,
-repeat the cycles until the relative pressure is equal
to or less than 0 bar,
-add together the values of the various draining op-
erations; the fill is confirmed as being correct if the
volume of refrigerant fluid is the specified fill +35g
or -100g.
II - CREATING A VACUUM
aIt is essential to carry out vacuum extraction correct-
ly before loading, otherwise the air conditioning will
not work properly.
There are two scenarios to consider:
-vacuum created immediately after discharge (sce-
nario A),
-vacuum created after an interval of several hours
or days (scenario B).
Scenario A:
-creation of a vacuum takes 20 minutes.
Scenario B:
-creation of a vacuum takes 45 minutes to elimi-
nate any trace of moisture.
aTest the seal once the vacuum has been created
(some stations do this automatically).
III - FILLING
aFill up the refrigerant circuit using the refrigerant
charging station. Note:
-If the air conditioning circuit is fitted with a sin-
gle filler valve, some filling equipment only
requires the use of the high pressure pipe (refer
to the filling station instructions).
-Depending on the situation, run the system for
a few minutes before recovering the coolant to
improve drainage.
Note:
It is essential to follow these procedures to pre-
vent:
- gas escaping when the circuit is opened,
- pollution of the environment through the release
of gas into the atmosphere when the circuit is
opened or when a vacuum is created.