light DACIA SUPERNOVA 2004 Repair Manual

ENGINE E7J-A-2/6010
10 - 3
ENGINE AND LOWER ENGINE UNITS
MOTOR-PROPELLING GROUP
Di sconnect the wiring c onnector from t he
reverse driving contact. The right-side planetary transmission is un-
coupled as follows:
-the brake-stirrup set is dismantled;
-disconnect the wire for the brake pads
wear indicator; -the t wo screws for fixing the shock-
absorber of the steering-swivel stand are taken
off;
The steering-swivel stand is tipped up and
the planetary t ransmission is taken out from
the planetary pinion of the gearbox;
The l eft-side planetary transm ission is un-
coupled as follows:
-the steering-swivel screw-nut is dis-
mantled; -t he scre ws for fi xi ng t he pl a neta ry
transmission on the gearbox a re taken off; -the brake-stirrup set is dismantled;
-the e lectric wire of the wear-and-abra -
sion light-i ndicator is taken off; -the t wo screws for fixing the shock-
absorber of the steering-swivel stand are taken
off; -the steeri ng-swivel stand is t ipped up
and the planetary tra nsmission is taken out; The fuse-box in the engine compartment
is dismantled.The following are disconnected: -connector 1 from the UCE injection
(pull flap 2, then disconnect);
-the front cabling of the engine;
-the connector of t he shock-sensor;
-the ventilator connector;
-the mass wire on the gearbox.
The battery protection screen is dis-
mantled.
The following are taken off:-the linking pipes coming from the ra -
diator, by using the pincers for elastic pipe-
collars MOT.1202-01B ;
-the linking pipes coming from the de-
gassing vessel, by using the pincers for elas-
tic pipe-collars MOT.1202-01B ;
-the pipes for a ir-conditioning coming
from the therm ostat stand and the water-pi pe;
12
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ENGINE E7J-A-2/6010
10 - 4
ENGINE AND LOWER ENGINE UNITS
The following are uncoupled:-the end of acceleration cable 1 from
the command lever of t he clapper; it is then
extracted off m uff 2 in the stand;
-the mileage cable: the two clamps are
pressed, and the cable is extra cted; -t he ri ght -si de he a dlight adjust m ent
cable, which is then positioned by the car
bodywork;
-the l inking pipes c oming from t he c arbon
canister and the canister-draining valve; -the fue l supply pi pes (both t he going- and
the re turn one) from the i njection ra mp, by
using MOT.1311-06 ;
The scre w linking the gear- bar and t he
auxiliary connecting rod to the gearbox is
dismantled.
MOTOR-PROPELLING GROUP
-the hydra ulic command con duit of the
clutch; fastener 1 is taken out and supply pipe
2 is withdrawn in the dire ction shown by the
arrow.
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E7J-A-2/60 ENGINE16
16 - 1
ST ARTING AND CHARGING
IDE NT IFIC ATIO N
ENGINE ALTERNATOR INT E NSITY
E7J - A-2/60 VALEO A11 VI 87 75A
VALEO A13 VI 212 80A
INSPE CT IO N
After 15 minutes’ warming under a 13.5 V voltage.
ENGINE REVOLUTIONALTERNATOR 75 A ALTERNATOR 80A
RATIO (rot/min) (A) (A)
1000 46 54
2000 68 75
3000 71 80
4000 72 82
FUNCTIONING AND DIAGNOSING
These c ars are equipped with interna l ve ntilation alternators, with i n-built voltage re gu-
lator a nd on-board light indicator, which must work as follows:
-when the contact is on, the light is on;
-when the engine start s, the light goes out;
-if t he l ight is on again as t he engine is runni ng, then i t i ndicates a charging dysfunc-
tion.
S
HOOT - FINDING INCIDE NT S
A.The light does not turn on when the contact is on.
To check:
-if the electric connections are done prope rly;
-if the light of the board indicator is working properly (when the circuit is set to the
mass, the light must turn on). AL
TERNATOR
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16E7J-A-2/60 ENGINE
16 - 2
ST ARTING AND CHARGING
B.The light turns on when the engine is running
This indicates a charging fa ult, the cause of which may be: - the carrying belt of t he alternator i s broken, the charging conductor i s cut (+ con-
tinuous); - a fault with the alternator (rotor, stator, diodes or brushes);
- a fault with the voltage regulator;
- a voltage surge (overvoltage).
C. The customer / user claims a fault with the charging, as the
on-board light works correctly.
If the re gulated voltage is less than 13.5 V, the alternator is checked. The cause of the defect may be:
- a burnt diode;
- disconnected or cut live wire;
- the coal powder or the wear of the collector.
C
ONTROL OF VO LTAG E
A voltmeter is connected across the terminals of the battery and the voltage value is
read.
The engine is run until the needle of the voltmeter settles at the regulated voltage. This value should be within 13.5 and 14.8 V.
The maximum of consumer devices are connected: the voltage should remain between 13.5 and 14.5 V.
CAUTION!
In case electric arc welding i s being done on t he car, the battery and t he voltage
regulator will be compulsorily disconnected (t he alternator).
AL TERNATOR
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E7J-A-2/60 ENGINE17
IGNITION AND INJECTION
17 - 3
I N J E C T I O N S Y S T E M
Peculiariti es of the multi-point system
90-pin calculator made by SIEMENS.
Multi-poi nt sequential injection. It commands an injector at a time, in turns.
S tatic ignition with double ignition coil.
Canister-dra ining valve controlled in a cyclical relation to the opening.
Correction of idle mode system in keeping with: -air-conditioning (AC);
-battery vol tage.
On -board injection light indicator;
Maximal load / regimen:
-6200 rot/min for gears: I, II, and III;
-6000 rot/min for gears: IV and V. PECULIARITIES
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E7J-A-2/60 ENGINE17
IGNITION AND INJECTION
17 - 6
The water - temperature sensor
This sensor (no.1) sends the inform ation concerning t he water t emperature to t he c alcu-
lator, and ot her i nformation is sent t o the on-board indicator, which will di splay water
temperature . In case of emergency regarding water t emperature , the calculator will command the
lighting of the water-tempera ture alert indicator on the board. In keeping with the water-temperature information received by the calculator, it will
command:
-the injection system;
-the relays for the command of the motor-ve ntilator e ngine cooling group.
When setting the contact on, the water tempera ture indicator, placed on the instrument
panel, shall be lighted for 3 seconds then it shall turn off.
1
So, after setting the contact off, during next 2 minutes from engine stopping, the water
temperature reaches the value of 102 C and the injection computer is then control ling the
cooling blower starting at low speed. When the tempera ture is lowering at 96 C, the blower will be stopped ; its operation
must not be over 10 minutes after engine stopping. PLACING OF ELEMENTS
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E7J-A-2/60 ENGINE17
IGNITION AND INJECTION
17 - 7
IN
JECTION-DISRUPTION LIGHT INDICATOR
THE SYSTEM PARTICULARITIES ( ANTI-STARTING INDICATOR )
On setting the contact, the injection calculator receives from UCE DECODING DE-
VI CE a c ode, which is then compared with t he one previously memorized; i f the two
codes are the same, then the start ing of the engine is authorized. After t he setting of t he c ontact, t he anti-start light indicator, which until then was fl ash-
ing on and off, will turn on for 3 seconds, and then it will turn off, thus confirming the
recognition of the key. If the key is wrong, after it has been put in the contact the light will turn on and off
quicker, and the engine starting will be impossible.
Ob servation:
Fo r details regarding the vehicle anti-start ing system, see chapter « Anti-starting
System » from the Workshop manual SupeRNova – vol.2, ed.I) PLACING OF ELEMENTS
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E7J-A-2/60 ENGINE17
IGNITION AND INJECTION
17 - 8
THE ANTI-START FUNCTION
R
EPLACING UCE INJE CT IO N CAL CUL ATOR
The UCE injection
calculator is delivered without a code, but it is able to memorize a code.
When mounting a new c alculator, it will have to memorize the code anti-start fuction
singularity of this car, then one has to check if the a nti-start function is operational. In
order to do that, the following operations must be done: -the contact is set for a fe w seconds, then it is taken out;
-after t aking out the key, the anti-start function is actived.
I
NSPE CT ING THE ANT I - ST ART FUNCT IO N
Take the key out of the contact and after 10 seconds the anti-start light indicator on the
board must begin to flash on and off. When setting the contact on, the anti-start ing indicator must turn off.
THE INFLUENCE OF THE AIR-CONDITIONINGON THE INJECTION SYSTEM
The air-conditioning installation ( AC) uses a variable cylinder-volume compressor.
There are the following connections between the air-co nditioning and the petrol injection system:
-pin no. 46 of t he injection calculator re ceives the i nformation “ solicit accelera ted
idle mode” when the button for t he air-conditioning i nstallation is pre ssed and the pres-
su re of the freon in the installation is above a limit.
-the i nformation “ absorbed power” does not infl uence the idle m ode re gime, but lets
the calculator know about the value of the couple taken by the compressor, and the calcu-
lator will opera te the step-by-step engine, through pins nos. 12, 41, 42 and 72, in order to
compensate for the couple fall. With the tester it can read in t he m enu : « Parameters l ist «
the power absorbed by the compre ssor, wich will be between 300 and 5000 W. The value
that is re ad will be of m inimum 300 W, irre spective of the coupled / uncoupled state of the
compressor.
-pin no. 10 of the injection calculator will command the E relay located in the fuse-
box of the engine compartment, which will couple the compressor.
The injection calculator c an prohibit the coupling of the AC compre ssor:
-it does not allow the coupling of the compresso r before 10 seconds after the starting of the engine;
-accordi ng to the couple re quired from t he e ngine by the driver - a nd in cert ain
s ituations according to the power absorbed by t he c ompressor - the calculator c an forbid or
authorize the starting of the compressor;
-if the water temperature is higher than, or equal to 11 5
oC, the therm ic prot ection is oper-
ated, which will not authori ze the start ing of the compre ssor; -the overload protection doe s not permit t he coupling of t he compressor when the
revolution ratio of the engine is over 5900 rot/min.
PLACING OF ELEMENTS
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E7J-A-2/60 ENGINE17
IGNITION AND INJECTION
17 - 9
IDLING REGIME ADJUSTMENT DUE TO BATTERY VOLTAGE
The idle mode of t he engine is influenced by the voltage of the battery with a view t o
compensating the voltage fa ll caused by the coupling of the consumers when the battery is
poorly charge d; this imposes an increase in the idle mode revolution ra tio, so the ratio of
the alternator will be incre ased by increasing the charging voltage. The lower the voltage,
the more significant the correction applied, which begins under 12.7 V.
The idle mode regime can thus be incre ased up to 830 rot/min.
If the injection calculator receives the information “command AC coupling”, then the
idle mode revolution ra tio will go up to 850 rot/min.
VA LUES « IDLING RCO « AND « IDLING RCO ADAPTATION «
P
RINCIPL E:
In order to use the information related to the parameters value “PR 021= RCO idling“
and “ PR 022= RCO idling”, the CLIP tester is to be used, which will be connected at the
diagnosis socket and at the vehicle battery ( or lighter socket). Select on tester m enu “COMPUTERS TEST”, then “PETROL INJECTION” . Find then
“FUNCTIONS TEST” and read here the progress of the PR 021 and PR 022 parameters.
In normal operation conditions, warm engine, the value RCO idling ( PR 022 ) is changing
between a maximal a nd a minimal value, so that nominal idling RPM is obtained. It is
possible that further to an operation dispersion ( runni ng in, engine choking up,etc) the
value “RCO idling” to get closer t o the minimal or m aximal value. The adaptive correction (PR 021 ) on “ RCO idling” (PR 022) is allowing r eaching at slow
variations of the engine air necessities, so that “RCO idling” is re-set on an average nominal
value. The parameters PR 021 and PR 022 are progressing among the following limits :
RA TED IDLE MOD E REGIME
(PR 006)
750 rot / min
RCO idling (PR 022)
5% £ X £ 12 % RCO idling
(PR 021)
-3 % .......+7 %
ID
LING REGIME ADJUSTMENT
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E7J-A-2/60 ENGINE17
IGNITION AND INJECTION
17 - 12
ENRICHING ADAPTIVE CORRECTION
PRINCIPLE
In the “ closed loop” stage, t he enri ching correction va lue (PR 035) is adjusting the
injection times in order to obtain a ratio as close as possible to the enriching value = 1.
The correction value is close to 128, having as limits 0 and 255; nevert heless, dispersions
of the injection system components may occur, that a re giving the correction a displacement
towards 0 or 255, in order to obtain the enriching value 1.
The a daptive c orrection i s allowing the injection c hart displacement i n order to re -
focus the enri chment adjustment (PR 035) on the 128 value.
The values of the adjustment correction may be read by means of the CLIP tester, as follows :
- connect the tester to the vehicle diagnosis socket and to the battery (or to the lighter socket).
- select
“COMPUTERS TEST” , then “PETROL INJECTION”
- in the menu “FU NCTIONS TEST”, access “ENRICHING ADJUSTMENT”, where
you can find para meters PR 030= enriching a dapting in opera tion (the adaptive corre ction
for the partial and large charge s area) and PR 031= enriching adapting at idling (adapting
correction at idling and in small charges area).
PARAMETER FIELD
Enriching adapting in operation (PR 030) 80% £ X £ 176 %
Enriching adapting at idling (PR 031) 80% £ X £ 176 % ENRICHING ADAPTIVE CORRECTION
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