relay DACIA SUPERNOVA 2004 Repair Manual

E7J-A-2/60 ENGINE13
PUMP SUPPLY
AIM:
To avoid accidental fire s owing to fuel leaks, which can be caused by an accident.
F
UNCT IO NING:
The shock-sensor lies in the engine compartment: it is mounted on the left-side shock-
absorber column. Du ring a shock, the ball of the sensor goes out of its slot, a nd thus achieves the breaking
of the electri c c ircuit be tween the relay commanding the petrol-pump and t he pe trol-pum p
itself.
PLACING B ACK THE SH OCK-SENSOR IN OPERAT IONAL MO DE
In order to resume the functioning of t he shock-sensor it will suffice to press its top,
and thus replace the ball in its former position. BREAKING FUEL SUPPLY
13 - 1
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E7J-A-2/60 ENGINE13
PUMP SUPPLY
SPE CIAL DE VICE S
Tu ning pincers “CLIC”
It is recommendable to do the inspection
of the fuel pump-fl ow through t he re turn fue l
hose which is connected on the pump-level
transmitter set.
I
MPORTANT!
During these operations it is compul-
sory:
-not to smoke or handle incandes-
cent obje cts at the working place;
-to ensure protection from the petrol
projections due to residue pressure left in
the ch anneling during the taking-apart.
PUMP-FLOW INSPECTION
The re turn c hanneling no. 1 of the fuel
supply is disconnected.
A hose is connec ted on the junct ion
whose end i s introduced in a gra ded ve ssel
(from 0 to 2000 ml) Term inals 3 and 5 of H relay (lying in
the fuse-box of t he motor-compart ment) of
the petrol pump are shunted. Within a minute, the fl ow of t he pump
must be min. 1.3 lite r at the voltage of 12
V .
If the fl ow is not corre ct, the suppl y
voltage of the pump is inspected (t he flow
d ecreases by approx. 10% for a 1 V
voltage-decre ase).
13 - 4
1
PUMP FLOW
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E7J-A-2/60 ENGINE13
PUMP SUPPLY
SU PPLY PRESSURE CONTROL
SPECIAL DE V I C E S
MOT 1311-01 Control Kit for
petrol pressure
MOT 1311-04 J Junction
MOT 1311-06 Junction-disconnect
ing device
CAUTION!
When the fuel circuit is opened, any
petrol jet due to residue pressure must be
averted by means of a gauze.
The air-filter is taken apart .
The fuel supply hose is disconnected.
The MOT 1311-04 deri vation junction
is connected onto the ramp, then the fue l-
s upply channelling is re-connected onto the
junction.
Te rm inals no. 3 and 5 of the H fuel-pump
relay (l ocated in the engine fuse -box) a re
shunted.
Pressure must be 3+/-0.2 bar.
By applying a 500 mbar depression on
the pressure-regulator, the pre ssure of the
fuel must be 2.5+/-0.2 bar.
13 - 5
MOT. 1 311 -0 4 MOT. 1 311 -0 1
The manometer 0-10 bar, as well a s the
flexible hose MOT 1311-01 are mounted.
SU PPLY PRESSURE
MOT. 1 311 -0 6
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E7J-A-2/60 ENGINE16
16 - 7
ST ARTING AND CHARGING
IDENTIFICATION
ENGINE STARTER
E7J - A-2/60 D 907 - M00 2T 13581
DIAGNOS TICATION
S pecial device: CLIP - SAGEM-TECHNIC TESTER which measures the battery
voltage and the intensity absorbed by the starter.
ANOMALOUS FUNCTIONING THAT CAN BE SETTLED
-Battery failure –contact drop on the starter when starting the engine.
-Blocked starter (t he absorbed curre nt is very high);
Coupling relay defect (the current absorbed is very weak).
In order to do the measurements one must carry t he engine in starter mode, thus pre -
venting the engine to run.
To do t hat, the revolution sensor (located in the c lutch cra nkcase) should be t aken apart .
Remark: After doing these tests, erase the possible defects memorized
by the calculator with the tester.
STA RTER
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E7J-A-2/60 ENGINE17
IGNITION AND INJECTION
17 - 4
PLAC ING OF ELEMENTS
1.Can
ister-draining valve;
2. Air -filter;
3. Det onation sensor (tightening couple: 2.5 daNm);
4. Atmo spheric air-pressure sensor;
5. Step-by -step idle mode-adjustment engine;
6. Cla pper position potentiometer;
7. Air- temperature sensor;
8. Inje ction calcul ator;
9. Shock-s ensor;
10. Fuse-and- relay box;
11. Revolution sensor;
12. Water- temperature sensor;
13. Oxyg en sensor (tightening couple: 4.5 daNm);
14. Igniti on coil;
15. Carbon canister.
1 14 3 5 6 7 4 2 11
9
10
15 13 \
12 8
PLACING OF ELEMENTS
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E7J-A-2/60 ENGINE17
IGNITION AND INJECTION
17 - 5
8. Injection calculator;
9. Shock-sensor;10. Revoluti on sensor;
11. Water-temperature sensor.
9
8
1
11
The fo
llowing relays can be identified in the fuse-box;
B = M otor-ventilator group relay (with Air-Conditioning)
H = Fuel-pump relay
C = Motor-ventilator group relay (without AC).
PLACING OF ELEMENTS
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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 - 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 - 17
DEFECTUL
1 Lack of c ommunication with the calculator 17-17
2 Calculator 17-18
3 Supply 17-19
4 Circuit of command actuator re lay 17-20
5 Circuit of command petrol -pump relay 17-21
6 Circuit of 1 cylinder injector 17-22
7 Circuit of 2 cylinder injector 17-23
8 Circuit of 3 cylinder injector 17-24
9 Circuit of 4 cylinder injector 17-25
10 Circuit of 1 and 4 ignition coil 17-26
11 Circuit of 2 and 3 ignition coil 17-27
12 Revolution ratio sensor information 17-28
13 Anti-start device 17-29
14 Failure to memorize the anti-start code 17-29
15 Circuit of atmospheric pre ssure sensor 17-30
16 Circuit of idle mode adjustment 17-31
17 Circuit of clapper potentiometer 17-32
18 Circuit of water-t emperature sensor 17-33
19 Circuit of air-t emperature sensor 17-34
20 Circuit of canister draining valve 17-35
21 Circuit of oxygen probe 17-36
22 Circuit of oxygen probe heating 17-37
23 Circuit of detonation probe 17-38
24 Car speed inform ation 17-39
25 Circuit of command air-c onditioning compressor relay 17-40
26 Water-temperature warning circuit 17-41
27 Circuit of command low-speed ventilator relay (air-c onditioned car) 17-42
28 Circuit of command high-speed ventilator relay (air-conditioned car) 17-43
29 Circuit of command ventilator relay (air-conditioned car) 17-44
30 Functional failure of oxygen probe 17-45
31 Pollutant combustion misfire / Disruptive combustion misfire 17-46
32 Combustion misfire at cylinders 1, 2, 3 and 4 17-47
DIAG NOSING-INTERPRETING THE DEFECTS
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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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