climate control DACIA SUPERNOVA 2004 User Guide

HEATING
61
61 - 4
DISMOUNTING
Release
the climate maintenance assembly from under the dashboard, dismounting beforehand
the central console, the documents compartment, the lower casing, the dashboard. Unscrew the attachment screws of the turbine deflector.
Unscrew the attachment screws of the blower.
Disconnect the blower from the blower wiring.
REMOUNTING
Perform in the reverse order the dismounting operations.
C
LIMATE CONTROL BLOWER
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AIR CONDITIONING
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Basically, the air conditioning unit is formed of a closed circuit, composed by the following main
elem ents:
- ev aporator
- compre ssor
- c ondenser
- thermo static expansion valve
- conn ection pipes.
The evaporator is the component that ex t racts the heat from the passengers compartment and
is generally placed in the passengers compartment. In order to cool the passengers compartment
the hot air must be absorbed, the heat extracted and the “cooled” air redistributed. The hot air is
pa ssing through the evaporator to who is giving part of the temperature reducing so, its own
temperature. The cooled air is so conveyed in the passengers compartment, progressively reducing
the temperature.
In the same time, the refrigerant fluid which goes into the evaporator, is absorbing the heat, from
ai r pa ssing through the evaporator and at the same temperature, is transforming it from liquid into
va pors. At the evaporator exit, the refrigerant fluid is in vapor condition.
The evaporator is placed in the climate control unit and is protected by cases.
EVAPORATOR
EVAPORATOR CASES ASSEMBLY REPLACEMENT
DISMOUNTING
Disconnect the battery.
Drain the refrigerant circuit.
Dismount the sealing gaskets on the climate box outliner.
Dismount the thermostatic expansion valve.
Dismount the climate case locking plate.
Di sconnect the pipes evaporator – compressor and evaporator – tank filter.
Dismount the evaporator cases attachment nuts, on the right side.
Release the evaporator cases.
Replace the assembly .
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AIR CONDITIONING
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REMOUNTING
Perform the dismounting
operations in the reverse order.
Fill the refrigerant circuit and check the good operation of the climate control system.
NOTE
Ensure that evaporator finned plates are not deformed and they are not excessive
dirty.
The tightening nuts for the climate and conditioning assembly, the connections for piping,
condenser and filter tank, must have the following tightening moments:
- thread 3/4” – 16 pitch/l” – at t he moment 18-20 Nm;
- thread 5/8” - 18 pitch/l” – at the m oment 14-20 Nm.
The tightening moment of the compressor flange attachment screw -12+/-1,2 Nm.
The tightening moment of the thermostatic probe attachment screw -5,7+/-0,5 Nm.
The tightening moment of the pressure capture - 20,7+/-2 Nm.
NOTE
After each operation that implies t he disconnection of t he battery, at its reconnection,
introduce the radio code that is written on the vehicle-selling invoice. EVAPORATOR
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AIR CONDITIONING
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The compressor is absorbing the vapors coming from the evaporator at low pressure and
temperature, is compressing them and convey the gas at high temperature and pressure. The refrigerant fluid in high pressure and temperature vapor condition is entering in the second
he at exchanger, which by condensation is transmitting the heat to the external environmental.
At the exit from the condenser, the refrigerant fl uid is in liquid condition, at a high pressure and temperature.
Type of compressor: SD 7Y15
Compressor oil : PAG SP 10 or SP20, volume –135 cmc.
Refrigerant: HFC 134 a, quantity of refrigerant : 0.590 kg
C OMPRESSOR REPLACEMENT
DISMOUNTING
Disconnect the battery.
Drain the refrigerant circuit.
Disconnect the compressor’s connection.
Disconnect the pipes from the compressor.
Dismount the belt tensioning screw and release the belt.
Dismount the compressor attachment screws.
Dismount the compressor.
Replace the compressor.
REMOUNTING
Perform in the reverse order the dismounting operations.
T ension the belt and tighten at the required moment the tightening attachment screw.
Fill the refrigerant circuit and check the good operation of the climate control system.
COMPRESSOR
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AIR CONDITIONING
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CL
IMA TE CONTROL UNIT REPLACEMENT
DISMOUNTING
Disconnect the battery.
Release t he lateral and central console.
Disconnect the wires from the dashboard wiring.
Disconnect the distribution flow flap control cables and the mixing flow flap from the control
lever and the recycling flow flap cable from the climate control panel.
Disconnect the air flow pipes.
Dismount the screws from the front side of the climate box.
Dismount the nuts from the welded screws in the backside of the climate box.
Release the climate control unit.
Replace the climate control unit.
REMOUNTING
Perform in the reverse order the dismounting operations.
CL
IMA TE CONTROL UNIT
AIR INLET ASSEMBLY REPLACEMENT
DISMOUNTING
Dismount the sealing gaskets on the climate box outliner.
Dismount the climate box locking plate.
Dismount the nuts from the right side of the climate box.
Release the air inlet assembly .
Replace the assembly .
REMOUNTING
Perform in the reverse order the dismounting operations.
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AIR CONDITIONING
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Defective cooling
Is climate
blower working ?
Check the bl ower fuse and relay.
Are they defective?
Supply the blower motor
at (+12 V).
D oes it works?
Replace the climate control
switch or repair the electric
circuit.
Replace them
No
Ye s
Ye s
Change
blower.
No
No
Adequate air flow ?
Check t he a irflow fl aps
operation and the air ducts
integrity.
Compressor belt tensioning is good?
Yes Ye s
No
Any refrigerant fluid leakage
in the system ?
No
Ye s
Ye s
Is compressor clutch supplied with (+ 12 V)?
No
Ye s N o
Clutch is coupling the
compressor?
Replace the therm ostatic
expansion valve.
Ye s
No Check the electri c circ uit
for supplying and control.
Detect th
e refri ge ra nt fl ui d
leakage cause . Perform refilling.
Pressure controller is working?
Replace it.
Reface
i tensiunea curelei
Replace it.
No
Ye s DIAGNOSIS
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81
REAR AND INTERIOR LIGHTING
81 - 7
A.
FOR VEHICLES MANUFACTURED TILL 01.06.2001
The fuses are protecting the following electric circuits:
FUSE
NUMBER FUSE
TYPE
PROTECTED CIRCUIT
Clock, radio, STOP contact, climate blower relay control
Reverse driving contact
UCE decoder, speed transducer, instrument panel supply, diagnostic
socket, AC starting button, UCE anti intrusion
Turning and hazard lights
Front/rear parking lights, lighting: switches, instrument panel, climate
control, documents compartment, cigarette lighter, ashtray, radio
Cigarette lighter, instrument panel (anti-starting indicator), front right
ceiling lamp, UCE anti intrusion, anti intrusion indic
ator, diagnostic socket
Windscreen wiper-washing switch, windscreen wiper timer
Rear window defrosting
Climate blower
Left fo g lamp
F01
F02
F03
F04
F05
F06
F07
F08
F09
F10 15A
5A
15A
7,5A
5A
15A
15A
20A
15A
5A
COCKPIT FUSE BOX
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REAR AND INTERIOR LIGHTING
B. FOR VEHICLES MANUFACTURED AFTER 01.06.2001
AND VEHICLES RESPECTING EURO 2000 POLLUTION NORM
The fuses are protecting the following electric circuits:
FUSE
NUMBER FUSE
TYPE
PROTECTED CIRCUIT
Clock, radio, STOP contact, climate blower relay control
Reverse driving contact
UCE decoder, speed transducer, instrument panel supply, diagnostic
socket, AC starting button, UCE anti intrusion.
Turning and hazard lights
Front/rear parking lights, lighting: switches, instrument panel, climate
control, documents compartment, cigarette lighter, ashtray, radio.
Cigarette lighter, clock, instrum
ent panel (anti-starting indic ator), front right
ceiling la mp, UCE anti intrusion, anti intrusion indicator, diagnostic socket.
UCE decoder, FLASH relay, anti starting bushing
Rear window defrosting
Climate blower
Left fo g lamp
F01
F02
F03
F04
F05
F06
F07
F08
F09
F10 15A
5A
15A
7,5A
5A
15A
15A
20A
15A
5A
81 - 9
COCKPIT FUSE BOX
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82B
HORN - ENGINE IMMOBILISER
82B - 41
GENERALITIES
DESCRIPTION
The a nti intrusion system has t he purpose of peripheral prot ection of the ve hicle a nd the
volumetric protecti on of the passengers compartment (cockpit) and has the following components:
The ECU anti intrusion (1) is located under the central console, being attached under the
climate control unit and receives information from the volumetric sensors and from the contacts
of: front doors, engine hood and tail hatchback.
In case of an intrusion into the vehicle, when the system is activated, ECU will start t he siren
combined with intermittent lightening of the turning lamps.
The volumetric sensors (2) are fixed on the upholstery of the left and right upper part of the
pillars. After the activation of the anti intrusion system with the remote control, the sensors c an
supply information to the ECU concerning the interior volume of the cockpit, which, in case of its
modification will produce the siren starting and the intermittent lightening of the turning lamps.
The siren (3) is fixed on a frame, being located in the climate control unit and it is controlled by
the ECU anti intrusion.
The intrusion LED indicator (4) is located on the dashboard, on the left side and it indicates if
the system is activated or not and in case of an aggression on the vehicle, the indicator will show
the type of aggression.
The contacts of the front and rear doors (5), of the e ngine hood (6) a nd of the hatchback (7)
are supplying information concerning their opening, to the ECU anti intrusion, when the system is
activated.
1 3
6
4
7
5
2
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82B
HORN - ENGINE IMMOBILISER
82B - 51
If after a complete checking of the anti intrusion system,
the replacement of the E.C.U. anti
intrusion is required, proceed as follows:
- remove from the central console the tape recorder’s frame and the tape recorder pulling
backward but without disconnecting the tape recorder from the vehicle’s wiring;
- dismount by detaching the aeration grill located on the right side of the central console ;
- dismount the t wo screws attaching t he E CU support i n t he ri ght side of the climate
control unit;
- take off the anti intrusion ECU together with its support through the central zone of the
central console; - disconnect the 24 ways connector from the anti intrusion ECU proceeding as follows:
remove towards exterior the two blocking clips of the connector and then carefully pull out the
connector; - dismount carefully the two way connector from the anti intrusion ECU;
- dismount the two screw attaching the anti intrusion ECU on its support;
- proceed the in reverse order of the dismounting;
- check the proper operation of the anti intrusion system. DISMOUNTING – REMOUNTING
OF THE ANTI INTRUSION ECU
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