check engine DACIA SUPERNOVA 2004 Owner's Manual

E7J-A-2/60 ENGINE16
16 - 5
ST ARTING AND CHARGING
The position of the alternator i s blocked.
The engine is revolved thre e and a half cra nkshaft turns;
The reading end of t he MOT. 1505 measuring device is placed in the measuring area;
The tension in the belt is measured;
It is checked whether t his fits i nto the mounting tension tolerance; if not, the belt will
be stretched again until the recommended tension ( 263 Hz +/- 10%) is reached.
The inspection a nd t he a djustment of the belt a re done with t he e ngine at ambient
temperature . Tighten at the require d moment, the alternator a ttachment screws :
- screw M10(lower attachment)-5 daNm
-screwM10 (upper attachment)-2.2 daNm.
Remark: Once dismounted, a belt is not to be remounted, but replaced.
MOT. 1505
MOT. 1505
AL
TERNATOR
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16E7J-A-2/60 ENGINE
16 - 6
ST ARTING AND CHARGING
DIS M O UNT ING
(in the air -conditioning variant)
The car is placed on a two-column lifting stand;
The electric connections are uncoupled from the battery;
The following are taken apart: -the top scre w of the alternator;
-the belt of the alternator;
The right-side front wheel of the car is taken apart;
The car is suspended;
The two screws fixing the shock-absorber on the steeri ng swivel stand are taken off;
The steeri ng swivel stand is lowered and the right-side planetary tra nsmission is taken
off the planetary pi nion of the gearbox; The electric conductors of the alternator a re disconnected;
The screw of the alternator is taken off;
The alterna tor is taken apart laterally past the right-side planetary tra nsmission.
R
E-MOUNT ING
The taking-apart opera tions are done in the reverse order;
The carrying belt of the alternator is stretched to obtain the mounting tension recom-
mended (263 Hz +/- 10% );
The position of the alternator i s blocked;
The engine is revolved thre e and a half cra nkshaft turns;
The reading end of the MOT. 1505 measuring device is placed in the measuring area;
The tension in the belt is measured;
It is checked whether t his fits into the mounting tension tolera nce; if not , the belt will be
str etched again until the re commended tension ( 263 Hz +/- 10%) is reached.
The i nspection and the adjustment of the belt are done with the engine at ambient
temperature .
Tighten at the require d moment, the alternator a ttachment screws :- screw M10 (lower attachment)-5 daNm
-screw M10 (upper attachment)-2.2 daNm.
Remark: Once dismounted, a belt is not to be remounted, but replaced.
AL TERNATOR
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E7J-A-2/60 ENGINE17
IGNITION AND INJECTION
17 - 1
S
TATIC IG NIT IO N
PRE S E NT
AT IO N
The system is made up of:
- electronic control unit;
- double ignition coil;
- four sparking plugs;
- spark plugs.
DES CRIPT IO N OF FUNCT IO NING PRINCI PL E
Accordi ng to the data received from
various sensors, but essentially according
to the revolution ratio and the load of t he
engine, the electronic control uni t will de-
termine the ignition advance; it will also
identify the cylinders that are set at the
upper center point and, consequently, will
command the re spective coil. This c auses the spark at the level of the
two cylinders t hat are at the upper center
point, thus interrupting the m ass-setting of
the respective coil. T
HE CO IL
The system c ontains a doubl e c oil, con-
trolled by the calculator.
Coil no. 2 has an electric connector (1) with
four ways, whi ch si m ultaneousl y produc e
s parks at cylinders nos. 1 and 4, when it i s
commanded by pin no. 32 of the i njection cal-
culator, and on cylinders no. 2 and 3 when it
is commanded by pi n no. 1 of the same cal-
culator.
ELECTRIC CONNECTOR
Pins Function
AC ommands ignition at
cylinders nos. 1 and 4
BC ommands ignition at
cy linders nos. 2 and
CFuel supply (+DC)
inter - pin Rezisten
a
check între pini
A-B 1 W
A-C 0,5 W
B-C0,5 W
HT - HT 11 KW
IGNITION SYSTEM
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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 - 16
S
TEPS IN DIAGNOSING
INSPECTION OF DEFECTS
This stage is the indispensable start ing-point before any intervention on the car. if the
defect is indicated by the t ester, then remedy it; if no defe ct ha s been signalled by t he
tester, a conformity inspection will ha ve to be made, thus helping t o spot the possible
causes. To do that check on the fol lowing elements:
- the electric circuit corre sponding to the defect which has been signalled;
- the electric connectors along the circuit (oxidized spots, deform ed plugs, etc.);
- the e lectric re sistance that is not i n keeping with the element connected to that
electric circ uit; - the state of the plugs (cut or worn-out insulation, areas with traces of pressing, etc.).
CONFORMITY I NSPECTION
Its aim is to check on the various states and parameters, to detect some anomaly when
the tester failed to find defe cts.
This phase allows:- to diagnose a breakdown or failure without displaying the defe ct corre sponding to
a deficient functioning of the parts or following complaints from the user. - to check the good functioning of the injection system and to ensure no breakdown
or failure will appear immediately aft er the repair ha s been made.
So, this heading concerns a diagnosing of the various states and parameters, unde r
certain inspection conditions.
If a state is defective or a parameter is be yond tolerance, the corre sponding diagnose
page will have to be consulted.
LOCALIZING A DEFECT AFTER USER’S COMPLAINT
If after the inspection of the injection system by means of the CLIP tester (inspection of
defects and i nspection of conform ity) the cause of the user’s c omplaint ha s not be en e limi-
nated, then the logical schema of finding out of the possible causes of the problem will be
used. These schemas will only be used under the following circumstances:- no defect has been shown by the tester;
- no anomaly has been signalled by the inspection of conformity;
- the car does not work properly. DIAGNOSING-INTRODUCTION
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E7J-A-2/60 ENGINE17
IGNITION AND INJECTION
17 - 18
DIAG
NOSING-INTERPRETING THE DEFECTS
LACK OF COMMUNICATION WITH THE CALCULATOR
LACK OF
COMMUNICA-
TION
SUGGESTIONS
Try the tester on a different car
Check:
- the connection between the tester and the diagnosing plug (state of the cable)
- the fuse s S3 and S4 in the engine compartment, and S15 in the passenger cabin.
Remedy if necessary.
Check at the diagnosing plug the presence of +12V for pin 16 and the mass for pin 5.
Remedy if necessary.
Connect the 90-way terminal-tester instead of the injection calculator and check the
insulation, the continuity and the absence of parasitic resistances along the following
ci rcu its:
-pin 28 of calc ulator ♦ mass
-pin 33 of calc ulator ♦ mass
-pin 3 of calculator ♦ mass
-pin 56 of calculator ♦ pin 7 of diagnosing plug
-pin 28 of calculator ♦pin 15 of diagnosing plug
-pin 28 of calculator ♦fuse S3 in the engine compartment
-pin 28 of calculator ♦ fuse S4 in the engine compartment.
Remedy if necessary.
AFTER
REPAIR
1.
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E7J-A-2/60 ENGINE17
IGNITION AND INJECTION
17 - 20
DIAG
NOSING-INTERPRETING THE DEFECTS
DEFECT
PRESENT
OR MEMO-
RIZED3.SUPPLY
1. Breakdown + 12V after the actuator relay 238 (D)
2. Breakdown + 12V after the contact (D.C)
SUGGES TIONSConditions of breakdown detection by the calculator:
-tak e the contact and wait till dialogue with the tester is lost
-put the contact and enter dialogue.
Conditions of performing the diagnosing:
-defec t is present.
Check the state of the battery and the connections to the mass.
Remedy if necessary.
Check the connecting and the state of the connector of 238 relay.
Change the connector if necessary.
Check the presence of +12V at the pole 3 of 238 relay.
Remedy the circuit to fuse S
1.
Take plug 5 out of the connector of 238 relay.
Check, after setting the contact, the presence of +12V at the pole 5 of
238 re lay.
Change relay if necessary.
Check insulation and the continuity of the circuit:
pin 66 of calculator
® pole 5 of actu ator relay 238.
Remedy if necessary.
Disconnect an element at a time (injector, canister draining valve, probe
O
2) and check the presence of +12 V for each of them.
Change the faulty element.
1.
2. The defe
ct is not active because it causes the loss of dialogue with the
tester
AFTER REPAIR
Er ase defects memorized by the computer.
Perform the steps under “Suggestions” to confirm the repair.
Remedy other possible defects.
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E7J-A-2/60 ENGINE17
IGNITION AND INJECTION
17 - 21
DIAG
NOSING-INTERPRETING THE DEFECTS
CIRCUIT OF COMMAND ACTUATOR RELAY
1. Circuit of command or short-circuit to the mass of the circuit to-
wards pin 39 of the calculator
2.
Short-circ uit a t 12V a long the c irc uit tow a rds p in 39 of the c a lc ula tor
4.
SUGGESTIONSConditions of breakdown detection by the calculator:
-tak e the contact and wait till dialogue with the tester is lost
-put th e contact and enter dialogue.
Condition of performing the diagnosing:
-defec t is present.
REMARK : This defect has priority and should be dealt with be-
fore the following ones.
Check the state of the battery and the connections to the mass.
Remedy if necessary.
Check the connecting and the state of the connector of 238 relay.
Change the connector if necessary.
Check the presence of +12V at the pole 1 of 238 relay.
Remedy the circuit to fuse S
1 in the engine compartment.
Check the coil of the 238 actuator relay.
Change relay if necessary.
Connect the 90-way terminal-tester instead of the calculator and check the insulation and
the continuity along the circuit:
pin 39 of calculator
♦ pole 2 of actu ato r r elay 2 38.
Remedy if necessary.
The proble m is not yet solved! Consequently, the injection calculator must be changed.
CAUTION! The destruction of the calculator has probably been caused by an electric shock.
The cause of the destruction must be found before mounting a new
calcul ator.
AFTER REPAIR Er
ase defects memorized by the computer.
Perform the steps under “Suggestions” to confirm the repair.
Remedy other possible defects.
DEFECT
PR ESENT
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E7J-A-2/60 ENGINE17
IGNITION AND INJECTION
17 - 22
DIAG
NOSING-INTERPRETING THE DEFECTS
CIRCUIT OF COMMAND PETROL PUMP
1. Open circuit or short-circuit to the mass of the circuit towards pin 68 of the c alculator
2. Short-circuit at 12V along the circuit towards pin 68 of the calculatorDEFECT
PRESENT
SUGGESTIONS
Conditions of breakdown detection by the calculator:
-tak e the contact and wait till dialogue with the tester is lost
-put the contact and enter dialogue.
Condition of performing the diagnosing:
-defec t is present.
REMARK : This defect has priority and should be dealt with before
the following ones.
Check the connection and the state of the 236 petrol pump connector.
Change connector if necessary.
Check, after setting the contact, the presence of +12V at the pole 1 of 236 petrol pump.
Remedy if necessary.
Connect the 90-way terminal-tester instead of the calculator and check the insulation
and the co ntinuity along the circuit:
pin 68 of calculator
♦ pole 2 of the 236 petrol pump.
Remedy if necessary.
Check the coil of the 236 petrol pump.
Remedy if necessary.
The prob lem is not yet solved! Consequently, the injection calculator must be changed.
CAUTION! The destruction of the calculator has probably been caused by an
electric shock.
The cause of the destruction must be found before mounting a new
calculator.
AFTER
R EPAIREr ase defects memorized by the computer.
Perform the steps under “Suggestions” to confirm the repair.
Remedy other possible defects.
5.
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E7J-A-2/60 ENGINE17
IGNITION AND INJECTION
17 - 23
DIAG
NOSING-INTERPRETING THE DEFECTS
DEFECT
PRESENT OR
MEMORIZED
CYLINDER 1 - INJECTOR CIRCUIT
1. Short-circuit at 12 V along the way to the pin 59 of the calcula- tor (injector command)
2. Short-circuit to the mass along the way to pin 59 of the calcula- tor (injector command)
3. Open c ircuit along the way to the pin 59 of the calculator (injec
tor command)
SUGGESTIONS
Conditions of breakdown detection by the calculator:
-the engi ne is started
Condition of performing the diagnosing:
-defec t is present
-the defect has been memorized but is recorded in the “present” state.
6.
Check the resistance of injector 1.
Change injector if necessary.
Check, after setting the contact, the presence of 12V at the pin 1 of injector 1.
Remedy, if necessary, the circuit up to the 238 actuating relay.
Connect the 90-way terminal-tester instead of the calculator and check the insulation
and the co
ntinuity along the circuit:
pin 59 of calculator
♦ pin 2 of injector 1.
Remedy if necessary.
The proble m is not yet solved! Consequently, the injection calculator must be changed.
CAUTION! The destruction of the calculator has probably been caused by an electric shock.
The cause of the destruction must be found before mounting a new
calcul ator.
AFTER REPAIR
Erase defects memorized by the computer.
Perform the steps under “Suggestions” to confirm the repair.
Remedy other possible defects.
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