sensor DACIA SUPERNOVA 2004 Owner's Manual

E7J-A-2/60 ENGINE17
IGNITION AND INJECTION
17 - 43
DIAG
NOSING-INTERPRETING THE DEFECTS
LOW SPEED VENTILATOR RELAY COMMAND CIRCUIT
(for A.C. cars)
1. Open circuit or short-circuit to mass of the way to pin 8 of the calcu- lator
2. Short-circuit at 12 V along the way to pin 8 of the calculator.DEFECT
PR ESENT27.
Conditions of breakdown detection by the calculator:
-take the contact and wa it for the dialogue with the tester to be lost
-set the conta ct and enter dialogue.
Condition of performing the diagnosing:
-defec t is present
Note: this defect has to be correlated with the diagnosing of the water
temperature sensor circuit and the air-conditioning installation.
SUGGESTIONS
Check the connection and the condition of the low-speed 700 ventilator connector
Change the connector if necessary.
Check, after setting contact, the presence of +12 V at pole 1 of the 700 relay.
Remedy it if necessary.
Connect the 90-way terminal-tester instead of the calculator and check the insulation
and the co ntinuity along the circuit:
pi n 8 of calculator
♦ po le 2 of the low-speed 700 ventilator relay.
Remedy if necessary.
Check the coil of the low-speed 700 ventilator relay.
Change relay 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.
AFTER
REPAIREr 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 - 44
DIAG
NOSING-INTERPRETING THE DEFECTS
HIGH SPEED VENTILATOR RELAY COMMAND CIRCUIT
(for A.C. cars)
1. Open circuit or short-circuit to mass of the way to pin 38 of the calculator
2. Sh ort-circuit at 12 V along the way to pin 38 of the calculator.DEFECT
PRESENT
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 and the air-conditioning installation.
S UGGESTIONS
Check the connection and the condition of the high-speed 234 ve n tilator co n nector
Change the connector if necessary.
Check, after se tt i ng co ntact, the presence of +12 V at po le 1 of the 234 re la y .
Remedy it if necessary.
Connect the 90-way terminal-tester instead of the calculator and check the insulation
and the con ti nui ty alo ng the circui t:
pin 38 of calculator
® pole 2 of the low-speed 234 ve nt il a to r relay.
Remedy if necessary.
Check the co i l of the lo w- sp e ed 23 4 ventilator relay.
Change re la y 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
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
28.
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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 - 57
DIAG
NOSING-INTERPRETING THE STATES
The idle mode rotation
ra tio > maximal limit. The id
le mode rotation ratio is too great.
- Chec k the oil level of the engine
- Chec k the good functioning of the atmospheric pressure sensor.
- Check the tubes connected to the admission collector.
-C heck the fittings of the admission collector
- Check the watertightness fittings of the clapper body
- Check the watertightness of the power-brakes.
- Chec k the presence of the nozzles of the oil-vapour re-aspiration circuit
- Chec k petrol pressure.
- Check the adjustment of the rocker-arms and the settling of the distribution.
If all the above are correct, then the step-by-step engine will have to be replaced.
Perform again the conformity test
AF T E R REPAIR
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E7J-A-2/60 ENGINE17
IGNITION AND INJECTION
17 - 61
DIAG
NOSING-INTERPRETING THE STATES
PARAM ETERWATER TEMPERATURE
SUGGESTIONSNo defect should be present or memorized
If the value read is not real, check if the sensor for water temperature correctly follows the
“standard curve of the resistance according to temperature”.
Replace sensor if there are deviations.
REMARK: a sensor displaying deviations regarding the normal evolution of its param
eter s has previously undergone an electric shock.
Check the insulation, the continuity and the absence of contact resistance along the circuits:
pin 13 of calculator
♦ pin B2 of water temperature sensor
pin 73 of calculator
♦ pin B1 of wa ter temperature sensor.
Remedy if necessary.
AFTER REPAIR Perform again the conformity test.
SUGGESTIONS No defect should be present or memorized PA R A METER
AIR TEMPERATURE
If the va lue read is not real, check if the sensor for air temperature correctly follows the
“ standard curve of the resistance according to temperature”.
Replace sensor if there are deviations.
REMARK: a sensor displaying deviations regarding the normal evolution of its param
eter s has previously undergone an electric shock.
Check the insulation, the continuity and the absence of contact resistance along the circuits:
pin 49 of calculator
♦ pin 1 of air te mperature sensor
pin 73 of calculator
♦ pin 2 of ai r temperature sensor.
Remedy if necessary.
AFTER REPAIR Perform again the conformity test.
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E7J-A-2/60 ENGINE17
IGNITION AND INJECTION
17 - 62
DIAG
NOSING-INTERPRETING THE STATES
PARAM ETERCOLLECTOR PRESSURE
ATMOSPHERIC PRESSURE
Check the insulation, the continuity and the absence of contact
resistance along the circuits:
pin 15 of calculator
♦ pin A of atmo spheric pressure sensor
pin 16 of calculator
♦ pin B of atmo spheric pressure sensor
pin 78 of calculator
♦ pin C of atmo spheric pressure sensor.
Remedy if necessary.
If all the above are correct, replace the atmospheric pressure
sensor
SUGGESTIONSNo defect should be present or memorized
Collector pressure not
r eal after setting
contact.
Co llector pres s ure <
Min. in idle mode.
Atmospheric pressure
not r eal
Check:
- watertightness of tube between the atmospheric pressure sensor
and the intake collector
- adju stment of rocker-arms
- canister draining valve, which should be closed in idle mood
- cy linder compression, controlled with “CLIP TEHNIC”
If all the above are correct, replace the atmospheric pressure sen-
sor
Collector pressure <
Max. in idle mode.
Perform again the conformity test.
AFTER REPAIR
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E7J-A-2/60 ENGINE17
IGNITION AND INJECTION
17 - 63
DIAG
NOSING-INTERPRETING THE STATES
PARAM ETERDETONATION SIGNAL
SUGGESTIONSNo defect should be present or memorized
The de tonation sensor should generate a signal, the amplitude of which must differ from 0,
a proof of the fact that it perceives the mechanical vibrations of the engine.
If th e signal = 0:
- check if the sensor is well fixed
- ch eck the insulation and continuity of cabling along the circuits:
pin 20 of calculator
♦ pin 1 of detonation sensor
pin 79 of calculator
♦ pin 2 of detonation sensor
pin 19 of calculator
♦ pin 1 of detonation sensor screening.
Replace detonation sensor if necessary.
AFTER REPAIR
PA R A M E T E RADAPTATION OF ENRICHMENT WHILE RUNNING
ADAPTATION OF ENRICHMENT IN IDLE MODE
SUGGESTIONS No defect should be present or memorized.
Do initialization.
Ma
ke sure the canister draining valve is watertight.
Erase memo ry o f th e injection calculator.
With the engine hot, in the stage of the idle mode adjustment, watch these parameters and
notice:
- if one of the parameters drifts to the MAX limit, then there is no enough petrol
- if one of the parameters drifts to the MIN limit, then there is too much petrol.
Ensure the cleanness and the good functioning of:
- p etrol filter
- petr ol pump
- petrol supply circuit
- petr ol tank.
AFTER REPAIR Perform again the conformity test.
Perform again the conformity test
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E7J-A-2/60 ENGINE17
IGNITION AND INJECTION
17 - 64
COMMANDPETROL TANK
SUGGESTIONS No defect should be present or memorized
Check that the shock sensor has the inner contact shut.
Push in order to perform the closing of the shock sensor, if necessary.
Check, while the injection calculator commands the petrol pump, the presence of 12V at
pin 3 of the shock sensor.
If there is no 12V at pin 3 of the sensor, then remedy the circuit between pin 3 of sensor
and pole 5 of petrol pump relay.
Check the continuity between pin 1 and pin 3 of shock sensor.
If necessary, replac e shock sensor.
Check the integrity of the cabling and the presence of mass at pin A1 of the connector on
the cap of the petrol tank.
Check the insulation and the continuity of the cabling along the supply circuit +12V:
-pin 1 shock sensor
♦ pin B1 pe trol tank connector.
Remedy if necessary.
If the incident persists, replace petrol pump.
AFTER REPAIR Perform again the conformity test
DIAG NOSING-INTERPRETING THE STATES
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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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19 - 10
19
COOLING - EX HA U ST - FU EL TANK
COOLING FAN REPLACEMENT
for vehicles without air conditioning
6 5
4 3 7
1
2
DISMOUNTING
Di
sconnect the (-) plug of the battery.
Di sconnect the cooling fan connector (7).
Dismount the three-attachement screws (6) of the cooling fan on the radiator, recovering the
attachement buffers (2), cross-pieces (3) and the washers (4) and (5).
Remove the cooling fan assembly (1).
REMOUNTING
Check the condition of the fan propeller, cooling fan electric motor, bushings and washers.
Tighten the attachement screw (6) of the assembly.
Connect the cooling fan connector (7).
Connect the battery pl ug (-). In case the vehicle is equipped with progammable radio-
cassettes, electronic clock, etc, these are t o be reset before re turning t he vehicle to the
client.
Check the cooling fan opera tion: start the ve hicle e ngine and disconnect t he water tem-
perature sensor. The cooling fan must start. Reconnect the water tempera ture sensor, then
by means of the CLIP tester, erase the memori zed failure related to the water t empera ture
sensor.
FAILURES
ERASING
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