air conditioning DACIA SUPERNOVA 2004 Owner's Guide

AIR CONDITIONING
62
62 - 9
PRESSURE CONTROLLER
(low pressure, high pressure, medium pressure, in accordance
with the specification) or pressure capture
- low pressure – disconnect when the pressure in the low pressure circuit is lower than
1,96 +/-0,2 bar , reestablishing at a higher pressure than 2,16 +/- 0,2 bar; - higher pressure – disconnect when the pressure in the high pressure circuit is higher than
31,4 +/-2 bar , reestablishing at a higher pre ssure than 25,5 +/-2 bar; - medium pre ssure - start s the bl ower on t he second level speed, when t he pressure i s
higher than 17,7+/-1bar and stops the blower at a lower pressure 13,7+/- 1,2.
Thermostatic expansion valve allows the reduction of the refrigerant liquid pressure which is
coming from t he condenser, passing through the tank filter and i s continuously adjusting the
refrigerant flow from the evaporator, to reach the compressor in vapor condition. PRESSURE CONTROLLER
The good operation of the air conditioning unit is ensured by a dryer filter tank that ha s the
purpose to protect the unit. The filter’s purpose is to absorb the eventually solid particles found
in the oil and refrigerant liquid circulation.
The interception is needed as they might block the operation of the thermostatic expansion
valve or may produce the compressor mobile parts worn or gripping.
DETECTION OF REFRIGERANT F LUID LEAKAGE
In order to detect the refrigerant liquid leakage, it is used a detector, calibrated to detect
leakage of 9gr. /year.
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AIR CONDITIONING
62
62 - 10
DRY
ER FILTER TANK
The dryer filter tank has a triple function in the air conditioning unit:
- filtering the refrigerant fluid from the unit;
- absorbing the moisture from the unit;
- it is a buffer storage tank of refrigerant fluid.
DRY ER FILTER TANK
REMOUNTING
Perform the dismounting operations in the reverse order.
Fill the refrigerant circuit, check the leakage and the good operation of the unit.
AT TENT ION
Do not mount dryer fi lter tanks that do not have protection covers. DRY
ER FILTER TANK REPLACEMENT
DISMOUNTING
Disconnect the battery.
Drain the refrigerant circuit.
Dismount the piping and protect the threads.
Disconnect the connector of the air conditioning pressure controller.
Dismount the receiver tank filter from the collar support.
Replace the tank filter.
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AIR CONDITIONING
62
62 - 11
UNIT PIPING
The air conditioning unit piping is ensuring the refrigerant fluid circulation between the unit
components. When piping is replaced, check the existence of the protective covers, the lubrication
of the connections and gaskets with compressor oil as well as filling up with compressor oil.
The unit filling and draining valves are placed on the compressor piping and they have different
diameters, so that they can not be reversed.
NOTE
For tightening or loosening the unit piping connections where the refrigerant fluid is
passing through, two special wrenches are to be used, in order to balance the moments’ twist.
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AIR CONDITIONING
62
62 - 12
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
62
62 - 13
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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AIR CONDITIONING
62
62 - 14
Correct AC system
filling.
Compressor does not work.
Ye s
Ye s No Ye s
Check the clutch coil. Damaged,
short-circuit?
Replace the
compressor.Restore the electric circuit
between E and clutch.
Is + 12 V at pol e E 5 of E relay?
Is + 12 V at pole E3 of E relay?
Is + 12 V at pole E3 of E relay?
Check fuse S6 from engine
compartment. Restore the
wiring between S6 and relay E.
No
Restore the wiring between pole
E1 of E relay a nd pole D5 of D
relay.
No
The wiring between injection
computer
and the pole E2 of E re lay is broken ?
Ye s
Repair the wiring.
Ye s
No
Check the pressure
controller electric circuit.
Injection computer does not receive
AC actuation?Yes
Check the switch electric circuit.
Pressure controller is working?
No
Replace the switch.
AC control switch is
working ?No
Ye s
Ye s
Check the pressure controller
electric circuit.
No
Replace the pressure controller.
No
DIAGNOSIS
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89A
ELECTRICAL DIAGRAMS
89A - 10
( until 01.06.2001)
NR. ELECTRIC DIAGRAMS DENOMINATION AE1 AE2 AE3
1 ANTI -INTRUSION AE2(O), AE3 O S
2 DOORS CENTRAL LOCKING S S S
3 ANTI-STARTING S S S
4 ELECTRIC LIGHTER S S S
5 CLIMATE CONTROL AE1, AE2 S S
6 CLIMA TE CONTROL AND AIR CONDITIONING AE1(O), AE2(O), AE3 O O S
7 TRUNK LIGHTING S S S
8 CEILING LIGHTING S S S
9 ASHTRAY AND DOCUMENT COMP.LIGHTING S S S
10 CLOCK S S S
11 PRE-EQUIPPING RADIO AE1, AE2 S S
12 PRE-EQUIPPING RADIO AE3 S
13 STARTING CIRCUIT S S S
14 ENGINE COOLING CIRCUIT AE1(series), AE2(series) S S
15 ENGINE COOLING CIRCUIT AE2(O), AE3 O S
16 ELECTRONIC INJECTION AE1(series), AE2(series) S S
17 ELECTRONIC INJECTION AE3 S
18 ALTERNA TOR CIRCUIT S S S
19 MASS SS S
20 MASS AE1 S
21 MASS AE2 S
22 MASS AE2(anti-intrusion), AE3 O S
23 MASS AE1 S
24 MASS AE1(
CA)O
25 MASS AE2 S
26 MASS AE2(
CA), AE3 O S
27 MASS AE1, AE2 S S
28 MASS AE2(anti-intrusion), AE3 O S
29 MASS AE1, AE2 S S
30 MASS AE1(
AC), AE2(CA), AE3 O O S
31 FUSE BOX AND COCKPIT RELAYS AE1 S
32 FUSE BOX AND COCKPIT RELAYS AE1(
CA)O
33 FUSE BOX AND COCKPIT RELAYS AE2 S
34 FUSE BOX AND COCKPIT RELAYS AE2(
CA), AE3 O S
35 FUSE BOX AND ENGINE RELAYS AE1 S
36 FUSE BOX AND ENGINE RELAYS AE1(
CA)O
37 FUSE BOX AND ENGINE RELAYS AE2 S
38 FUSE BOX AND ENGINE RELAYS AE2(
CA),AE3 O S
FUNCTIONAL DIAGRAMS LIST
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89A
ELECTRICAL DIAGRAMS
89A - 32
ENGINE RELAYS AND FUSE BOX

(FOR VEHICLES WITHOUT AIR CONDITIONING SYSTEM)
ENGINE WIRINGB41
01
NO
E2
R
C 1 C4 C 2
3NR 3JN
A
A-V OR
R-V
A1 A4 A2
8A M
V
A N R
H1 H4 H2
H3
A-V
A
G M-G
R
D5
D1 D4 D2
BP17 3GT D3
A-VI
R-N AS-R R
S1
R
S3G
G
E1 R
R
2
R
E3
R
S2
R-V
1
R
S 4
R
E4
R
597
BP37 BP17
3NR
BB BP17
3NA
AP29
AP293AC
BP17
A
BPR1 B
8D P
BPR1
BP7
49B
B BP7
CONNECTORS AND CONNECTIONS WIRES FUNCTION
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89A
ELECTRICAL DIAGRAMS
89A - 34
ENGINE WIRINGB4101
ENGINE RELAYS AND FUSE BOX

(FOR AIR CONDITIONING SYSTEM EQUIPPED VEHICLE S)
NO
A1 A4 A2
V
A N
R
H1 H4 H2
A-V
A
G M-G R
D1 D4 D2
A-VI
R-N AS-R R
5 9 7
C 1 C4 C2
C3
A
A-V M- R
R-V
B1 B4 B2
B3
R-G
A OR
R-G
S3G
G
E1R
R
1
R
E4
R
E5
E1 E4 E2 E3
V
G V-M
A
E2
R
S4
R
S1
R
E3
R
S6
A
2
R
E6
A-R
S2
R-G
R-V
BP37 BP17
BP17 3GT3NR
BP17
3NA
BPR1 3AC
38K AP29
38R BB
3NR AP29
BP17
A
8DP
BPR1
BPR1
8A M
B
B
BP7 BPR1
B BP7 49B
49L
3N R 3JP
3JN 3N R
CO
NNECTORS AND CONNECTIONS WIRES FUNCTION
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89A
ELECTRICAL DIAGRAMS
89A - 35
ENGINE WIRINGB4101
A1 0,5 8A + FOG LA MPS RELA Y
A2 0,5 M MASS
A3 1,0 BPR1 + BATTERY > FUSE OUTLET F17 > RELA Y
A5 1,0 8DP + PROTECTED FUSE > FOG LAMPS
B1 0,63 NR+ INJECTORS > ACTUATORS RELAY OUTLE T
B2 0,63 JN - BLOWER RELAY, TR.1
B3 2, 0 BP7 + PROTECTED BATTERY > FUSE OUTLET F02
B5 2, 0 49L BLOWER COOLING RESISTANCE CONTROL
C1 0,63 NR+ INJECTORS > ACTUATORS RELAY OUTLE T
C2 0,63 JP CONTROL – BLOWER RELAY, TR.2
C3 4, 0 BP7 + PROTECTED BATTERY > FUSE OUTLET F02
C5 5, 0 49B CONTROL + BLOWER COOLING
D1 0, 6 BP17 + PROTECTED BATTERY > FUSE OUTLET F01
D2 0,63 GTACTUATORS RELAY CONTROL, IN JECTION COMPUTER
D3 5, 0 BP17 + PROTECTED BATTERY > FUSE OUTLET F01
D5 5,03 NR+ INJECTORS > ACTUATORS RELAY OUTLE T
E1 0,53 NR+ INJECTORS > ACTUATORS RELAY OUTLE T
E2 0, 5 38K AIR CONDITIONING SYSTE M STOPPING CONTROL >
INJECTION COMPUTER
E3 1, 0 BPR1 + BATTERY > FUSE OUTLET F06 > RELA Y
E5 1, 0 38R CONTROL + AIR CONDITIONING COMPRESSOR CLUTCH
H1 0, 6 AP29
+ AFTER PROTECTED CONTACT > FUSE OUTLET F03
H2 0, 6 3AC CONTROL - FUEL PUMP RELAY
H3 5, 0 BP17 + PROTECTED BATTERY > FUSE OUTLET F01
H5 2, 0 3NA
+ IGNITION COIL, CHOKE SENSOR > FUEL PUMP RELA Y
H5 1, 4 3NA
+ IGNITION COIL, CHOKE SENSOR > FUEL PUMP RELA Y
E1 5,0 B + BATTERY E1 0, 6 B + BATTERY > FUSE INLET F04
S1 5,0 BP17 + PROTECTED BATTERY > FUSE OUTLET F01
E2 5, 0 B + BATTERY > + STARTER
S2 2,0 BP7
+ PROTECTED BATTERY > FUSE O UTLET F02, BLOWER
COOLING
S2 4,0 BP7 + PROTECTED BATTERY > FUSE OUTLET F02
E3 1,0A SUPPLY + AFTER CONTACT
S3 0,6 AP29 +PROTECTED D.C. > ENGINE RUNNING SAFETY RELAY
S3 0,35 AP29
+ AFTER PROTECTED CONTACT > FUSE OUTLET F03
E4 0, 6 B + BATTERY > FUSE INLET F01
S4 0,6 BP37 + PROTECTED BATTERY > FUSE OUTLET F04
11 ,0 B + BATTERY
21 ,0 BPR1 + BATTERY > FUSE O UTLET F17 >RELA Y
E6 1,0B + BATTERY
S6 1,0 BPR1 + BATTERY > FUSE OUTLET F06 > RELA Y
Pos . SectioningDestination
CONNECTORS AND CONNECTIONS WIRES FUNCTION
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