2004 DACIA SUPERNOVA air condition

E7J-A-2/60 ENGINE17
IGNITION AND INJECTION
17 - 47
DIAG
NOSING-INTERPRETING THE DEFECTS
POLLUTING COMBUSTION MISFIRE
DESTRUCTIVE COMBUSTION MISFIRE
1. Combustion misfire during the last running done
2. Confirmed combustion misfire.DEFECT
PR ESENT
Combustion misfire at cylinder 1
Combustion misfire at cylinder 2
Combustion misfire at cylinder 3
Combustion misfire at cylinder 4.
Furnishe s informa tion c onc e rning the na ture and loc ation of bre a kdown.
SUGGESTIONS
31.
Connect the tester and select “Test of ignition”.
Watch the indications and replace the necessary parts.
Connect the tester and select “Test of compression”.
Watch the indications and replace the necessary parts.
Connect the tester and check the cogs of the flywheel.
Remedy if necessary.
If no defect is found ou
t, then there is a problem with the fuel-supply circuit. You must
check:
-p etro l filter
-f low and pressure of fuel
-condition of petrol pump
- if there are impurities inside the tank
-condition of injectors.
Remedy the elements of the fuel-supply circuit that are faulty.
Note down other functional defects.
Erase the defec ts memorized by the calculator.
Remedy other possible defects.
AFTER REPAIR
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E7J-A-2/60 ENGINE17
IGNITION AND INJECTION
17 - 50
DIAGNOSING-CON
FORMITY TEST
LIST OF PARAMETERS
5.Water te m-
perature sen-
sor Parameter
: water
temp erature X= Eng ine
temperature +/- 50C
If further problems
arise, refer to the diag-
no sing of that parameter
Parameter : air te mperature
Air tempera-
ture se nsor X= Temp erature
under engi ne ho od
+/- 5
0C
If further problems arise,
refer to the diagnosing of
that parameter
6.
P
ressure sen-
sor Parameter
: collector
pressure
Parameter : atmospheric
pressure If
further problems arise,
refer to the diagnosing of those parameters
X= Atmo s pheri c
pressure
X= Atmo s pheri c
pressure
7.
COMMAN D OF A CTUATO RS
8. Petrol pump Command:
relay of petrol
pu
mp
F unctioning of
petrol pump must be heard If
further problems arise,
refer to the diagnosing of that command
Command: low speed cool-
i ng ventilator
Command: high speed cool-
i ng ventilator F
unctioning of
l ow speed ventila-
tor must be heard
F unctioning of
high speed venti-
lator mu st be
heard If
further problems arise,
refer to the diagnosing of that command
If further problems arise,
refer to the diagnosing of that command
C
ooling
ventilator
If further problems arise,
refer to the diagnosing
for lack of conformity to
idle mod e adjustment
Pu
t hand under the
engine to feel its
functioning
Command:
idle mode adjust-
me nt engine
St
ep-by-step
engine
If further problems
arise, refer to the diag-
nosi ng defects along the
d raining valve circuit
Va l
ve must be
functional
Command: C
anister draining
valve
C
anister
draining
valve
9.
10. 11. If further problems
arise, refer to the diag-
nosi ng of the states of air
conditioning
Compress
or must
couple
Command:
AC must be op-
erated through the board
switch
Air condi-
tioning (AC)
12.
Command: Water tempe ra-
ture
alert light indicator on
board
Water te m-
perature alert
light indica-
tor
13.
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E7J-A-2/60 ENGINE17
IGNITION AND INJECTION
17 - 52
DIAGNOSING-CON
FORMITY TEST
Pressure circuitParameter: Collector pres-
sure
Parameter: Atmospheric
pressure 290 < X < 370 mbar
X=Atmos
pheric
pressureIf further problems
arise, refer to the
di agnosing of those
p arameters9.
Parameter: Detonation sig-
nal 30 < X < 70
If
further problems
arise, refer to the
di agnosing of that
p arameter
Anti-detonation
circuit
10.
LIST OF STÃTES
LIST OF PARAMETERS
Enrichment
adjustment
Stat
e: enrichme nt adjustment
Parameter: tension of oxygen
probe
Parameter: enrichme nt ad-
justm ent correction Confirmed state
20mV 0 A verage = 128 If
further problems
arise, refer to the
di agnosing of that
state
Stat e: Air-conditioning re-
quirement
Stat e: Accelerated idle mode
Stat e: AC compressor
Parameter: en g i ne ro t ation ratio
Parameter: power absor bed
by AC compressor
State: Ai r-condit ioning requirment
State: Accelerated idle mode
Stat e: AC compressor
Para meter: en gine ro t ation ratio
Para meter: power ab s o rbed by
AC co mp res sor Confi rmed state
Lig ht indicat or is on
when AC co mman ds
co upling of co mpres -
sor
Confi rmed state
Lig ht indicat or is on
when accel erated idle
mo d e is active
Confi rmed state
Lig ht indicat or is on
when injection au tho-
ri zes co u pling of co m-
pressor
75
0 3 00 Not co nfirmed sta te
Confi rmed state
Not co nfirmed sta te
If th e injection does
not auth ori ze co upling
of compres sor
75 0 X<25 0 W
Confi rmed state
Ventilator must have
low rotation ratio
Sta te: Low sp eed ven tilat or
If further problems
arise, refer to the
di agnosing of those
states
11.
12.
Air-conditioning
(board-com-
m
anded AC)
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E7J-A-2/60 ENGINE17
IGNITION AND INJECTION
17 - 58
STATEENRICHMENT ADJUSTMENT
SUGGESTIONSThere shou
ld be no defect present or memorized.
Check the connection and the condition of the oxygen probe connector.
Remedy if necessary.
Check the presence of + 12V at pin A of oxygen probe after setting the contact.
Check insulation and continuity along the circuits:
pin 45 calculator
♦ pin C oxygen probe
pin 80 calculator
♦ pin D oxygen probe.
Remedy if necessary.
- Check the ignition system
- Check the watertightness of the connections to the canister draining valve and to the can
ister (lack of watertightness in these locations considerably perturbs enrichment).
- Chec k the watertightness of the exhaust (i.e. exhaust-pipe) circuit.
- Chec k the watertightness of the intake collector.
- If the car on ly runs in town, the probe can be clogged (try to do a loaded running)
- If the idle mode running is unstable, check the adjustment of the rocker-arms and the
settling of the distribution.
- Chec k petrol pressure
- Chec k the injectors (the petrol flow and the shape of the flow).
If necessary, replace the oxygen probe.
AFTER REPAIR Perform again the conformity test.
DIAG
NOSING-INTERPRETING THE STATES
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E7J-A-2/60 ENGINE17
IGNITION AND INJECTION
17 - 59
STATEAIR CONDITIONING AC COMPRESSOR REQUIREMENT
SUGGESTIONSNo defect should be present or memorized
The compressor
clutch do es n ot
couple Check the insulation and continuity along the circuit towards pin 10
injection calculator.
Remedy if necessary.
If
the incident persists, refer to the diagnosing of he air-conditioning.
AFTER REPAIRPerform again the conformity test
CALCULATOR POWER VOLTAGE
PA R AMETER
No defect should be present or memorized.
No consumer should be turned on.
SUGGESTIONS
The contac
t is set
If the voltage < the minimal voltage, then the battery may be flat.
Check the charging circuit, in order to detect the cause of the problem.
If the voltage > the maximal voltage, then it is possible that the
battery may be overcharged.
Check the charging voltage to be correct, with and without consumers.
In idle mode
If the vo ltage < the minimal voltage, then the charging voltage is too
small.
Check the charging circuit, in order to detect the cause of the problem.
If th e voltage > the maximal voltage, then the charge of the battery is
too high.
The vo ltage regulator is faulty.
Remedy this problem, and then check the level of the electrolyte in the
ba ttery.
DIAG NOSING-INTERPRETING THE STATES
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E7J-A-2/60 ENGINE17
IGNITION AND INJECTION
17 - 69
DIAG
NOSING-BREAKDOWN LOCALIZATION ALGORITHM
RUNNING PROBLEMS3.
SUGGESTIONSDo not use this information before having done the complete
check- up with the tester!
Check if there are no broken tubes
Check if the air filter is not deformed.
Check the condition of the fittings.
Check if the exhaust collector is watertight.
Make sure that, after taking them off, the injectors do not leak.
♦
♦
♦
Check if there are no broken tubes
Check the state of the sparking plugs and the ignition coil.
Check if there is petrol in the fuel tank (do not rely on the
on-board in dices). Check if it is the fuel recommended by
the manufa cturer. Check if there are no broken tubes.
Check if the exhaust circuit is not strangled-up and the
cata lyst is not stopped-up.Check the exhaust
system
♦♦
♦ ♦
♦ ♦ ♦Check, on the oil gauge, if the level of the oil is not too high.
Check the air filter
Ch eck the fuel
Check the tube s a nd
hose s.
Check the fuel-sup-
ply circuit
Check the ignition Check the engine oil
levelCheck the intake
collector
Check the exhaust
collector
Check the injectors
A
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19 - 02
FILLING AND DRAINING
The hea ting radiator does not have a tap.
The circula tion of the cooling liquid is done continuosly within the heating radiator, which con-
tributes to the heating of the engine.
F
ILLING
The tightening of the emptying stopper is checked.
Th e dr aining screw placed on the tube between the engine and the air-conditioning radiator is
taken off.
Th e circ uit is filled through the hole of the de-gassing pot.
The dr aining screw is fastened when the liquid flows in a continuous jet.
The engine is set into motion ( 2500 rot/min).
The leve l is adjusted for approx. 4 minutes.
Th e stopper of the de-gassing pot is closed.
D
RAINING
The engine is let to run for 10 minutes at 2500 rot/min until the motor-ventilator starts (i.e. the
time for the automatic de-gassing).
Check if thelevel of the liquid is close to “ Max”.
Do not open the draining screw when the engine is running.
Fasten again the stopper of the de-gassing pot with the engine still hot.
FILLING AND DRAINING19
COOLING - EX HA U ST - FU EL
TANK
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19 - 6
19
COOLING - EX HA U ST - FU EL TANK
COOLING FAN REPLACEMENT
for vehicles with air conditioning
1 6 5
3 2 4
7
8
DISMOUNTING
Di
sconnect the (-) plug of the battery.
Di sconnect the cooling fan connector (5).
Di sconnect the cooling fa n resistance connector (1). Mark t he mounting position iden-
tification of the two connectors.
Detach the wiring from clip (6).
Cut the clip attaching the wiring on the cooling fan assembly in point (7).
Dismount the four-attachement screws (3) of the cooling fan on the radiator, recovering the
washers (2) and (4). Remove the cooling fan assembly.
REMOUNTING
Check the condition of the fan propeller, cooling fan electri c motor, washers.
Tighten the attachement screw (3) of the assembly.
Replace the clip from point (7).
Mount the wiring of t he cooling fan assembly taking i nto the considera tion the mount-
ing position m arked before dismounting. This is to be fi xed by means of a clip in point (7)
and will pass trough the clip (6). Connect the cooling fan re sistance connector (1).
Connect the cooling fan c onnector (5). Observe t he m ounting position i dentification of
the two connectors. Connect the battery plug (-). In case the vehicle is equipped with progammable radio-
cassettes, electronic clock, e tc, these a re to be reset before returning the vehicle to t he client. Check t he c ooling fan opera tion: start the vehicle engine and disconnect the water
temperature sensor. The cooling fa n must start. Reconnect the water t emperature sensor,
then by means of the CLIP tester, erase the memorized failure related to the water t em-
perature sensor.
FAILURES
ERASING
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