2004 DACIA SUPERNOVA cooling

E7J-A-2/60 ENGINE17
IGNITION AND INJECTION
17 - 34
DIAG
NOSING-INTERPRETING THE DEFECTS
DEFECT
PRESENTOR
MEMO RIZEDWATER TEMPERATURE SENSOR CIRCUIT
Breakdown of water temperature sensor
Conditions of breakdown detection by the calculator:
-se t the contact
-if the defect is only memorized, start the engine and keep it run till
the first start of the cooling engine ventilator.
Conditions of performing the diagnosing:
-the defe ct is present
-the defect has been memorized but is recorded in the “present” state.
S UGESTIONS
Check the connection and the state of the water temperature sensor
Change the connector if necessary.
Check that the resistance of the water temperature sensor is not 0 or “infinite” (i.e. certain
breakdown of the sensor).
Change the sensor if necessary.
Connect the 90-way terminal-tester instead of the calculator and check the insulation,
the continuity and the absence of contact resistance along the circuits:
pin 73 of calculator
♦ pin B1 of th e water temperature sensor
pin 13 of calculator
♦ pin B2 of th e water temperature sensor.
Remedy if necessary.
Check that the alteration of the resistance of the sensor for various temperatures is in
ke eping with its variation curve.
Change the sensor if necessary.
The problem 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.
Erase defects memorized by the computer.
Perform the steps under “Suggestions” to confirm the repair.
Remedy other possible defects.
AFTER REPAIR
18.
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E7J-A-2/60 ENGINE17
IGNITION AND INJECTION
17 - 35
DIAG
NOSING-INTERPRETING THE DEFECTS
AIR TEMPERATURE SENSOR CIRCUIT
Breakdown of air temperature sensorDEFECT
PR ESENTOR
MEMO RIZED
Conditions of breakdown detection by the calculator:
-se t the contact
-if the defect is only memorized, start the engine and keep it run till
the first start of the cooling engine ventilator.
Conditions of performing the diagnosing:
-defec t is present
-the defect has been memorized but is r ecorded in the “present” state.
SUGGESTIONS
Check the connection and the condition of the air temperature sensor
Change the connector if necessary.
Check that its resistance is not 0 (i..e. certain breakdown).
Remedy the sensor if necessary.
Connect the 90-way terminal-tester instead of the calculator and check the insulation,
the continuity and the absence of contact resistance along the circuits:
pin 77 of calculator
♦ pin 2 of air te mperature sensor
pin 49 of calculator
♦ pin 1 of ai r temperatur e sen sor.
Remedy if necessary.
Check that the alteration of the resistance of the air temperature sensor for various tem-
per atures is in keeping with its variation curve.
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
calcul ator.
Erase defects memorized by the computer.
Perform the steps under “Suggestions” to confirm the repair.
Remedy other possible defects.AFTER REPAIR
19.
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E7J-A-2/60 ENGINE17
IGNITION AND INJECTION
17 - 45
DIAG
NOSING-INTERPRETING THE DEFECTS
VENTILATOR RELAY COMMAND CIRCUIT
(for cars having no A.C.)
1. Open circuit or short-circuit to mass of the way to pin 8 of the calculator
2. Sh ort-circuit at 12 V along the way to pin 8 of the calculator.DEFECT
PRESENT29.
Conditions of breakdown detection by the calculator:
-take the contact and wait for the dialogue with the tester to be lost
-set the conta ct and enter dialogue.
Condition of performing the diagnosing:
-the defe ct is present
Note: this defect has to be correlated with the diagnosing of the water
temperature sensor circuit.
SUGGESTIONS
Check the connection and the condition of the connector of the 23 4 cooling ventilator
re lay.
Change the connector if necessary.
Check, af t er se tt i ng co nt a ct, the pr e sence of +12 V at po le 1 of the 234 re lay.
Remedy it if necessary.
Connect the 90 - way te r m in a l -tester instead of th e calculator an d check the in s ulation
and the con ti nui ty alo ng the circui t:
pi n 8 of ca lc ul at or
♦ pole 2 of th e 23 4 cooling ve nt il at or re la y.
Remedy if necessary.
Check th e coil of th e 234 co ol in g ventilator relay.
Change th e relay if ne ce ss ar y .
The problem is not yet solved! Consequently, the injection calculator must be changed.
CAUTION! The destruction of the calculator has probably been caused by an
ele ct ric sho ck.
The cause of the destru ction must be found before mounti ng a new
calcu lato r.
Er ase defects memorized by the computer.
Perform the steps under “Suggestions” to confirm the repair.
Remedy other possible defects.AFTER
R EPAIR
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E7J-A-2/60 ENGINE17
IGNITION AND INJECTION
17 - 70
DIAG
NOSING-BREAKDOWN LOCALIZATION ALGORITHM
Check if the clapper body is not clogged.
Check if there are cases of lack of watertightness (noise)
on the powe r-brakes.
Connect the tester “CLIP” and do the test corresponding
to the check-up of the rotation signal.
Check if the spurs, the brake cylinders and the wheel ball-
rings are no t seized-up.Check the body o f
the clapper♦
Ch eck t he power-br akes
Check the engine
flywheel
Check the running
train
Check the cooling
of the engine
♦
♦
♦
Check if there is enough engine cooling.♦
Check the canister
draining valve Disconnect the tube between the draining valve and the in-
take collector and strangle it up. If the disturbances disap-
pear, the caus
e was the draining valve.
Check the engine
comp ression Connect the “CLIP TEHNIC” device to do this test in accor-
dance w ith the usual manner of work.
AFTER REPAIR Erase the defec
ts memorized. If there are no other problems,
eras e the parameters memorized by the calculator.
♦
♦
A
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19 - 1
19
COOLING - EXHA U ST - FUEL TANK
QUANTITY AND QUALITY OF COOLING LIQUID
TYPE ENGINE QUANTITY (L) CALITAT E PECULIARI TI ES
E7 J 6 Anti-freeze type D Protection up to -400C
GLACEOL RX
THERMOSTAT
TYPE E NGINE START OF OPENI NG (0 C) END OF OPENI NG (0 C ) DRI VE (MM)
E7J 89 101 7,5
CHARACTERISTICS
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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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1. CHECKING WATERTIGHTNESS OF CIRCUIT
The MS 554-01 adapter is mounted instead of the valve of the de-gassing pot.
The MS 554-07 device is connected to the adapter.
The engine is heated, and then stopped.
the pump is used in order to put the circuit under pressure. The pumping is stopped at a value 0.1 bar smaller than the tare value of the valve ( 1.2 bar).
Th e pr essure must not go down; otherwise, the leak is looked for.
Th e junction of the device for cooling system decompression is progressively unscrewed,
then the apparatus is taken off and the valve of the de-gassing pot, equipped with a new fitting,
is mounted.
2. CHECKING WATERTIGHTNESS OF CIRCUIT
The MS 554-06 devi ce, then the pressure in the circuit is reestablished; this pressure must
become stable at the tare value of the valve with the control tolerance of +/-0.1 bar.
Th e tare value of the valve of the de-gassing pot: 1.2 bar.
19
COOLING - EXHAUS T - FUEL TANK
CONTROL
19 - 03
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19 - 4
19
COOLING - EX HA U ST - FU EL TANK
Components:
1. Engine
2. Radiator
3. De-gassing pot
4. Air-warming device
5. Thermostat stand
6. Nipple ø 3
7. Draining screw
THE SCHEMA
Thermostat
Wa ter pump
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