sensor DACIA SOLENZA 2004 Owner's Manual

IGNITION AND INJECTION
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At vehicles equipped with diagnostic system OBD (On Board Diagnostic), when detecting a
caus e leading to an excessive pollution, on the instrument panel the OBD indicator will be on,
indicating to the driver that vehicle must be repaired to eliminate the pollution cause.
The OB D system is taking into consideration during its operation of the performing the follow-
ing diagnostics: -electric diagnostics;
-c ombustion misfires diagnostics
-f unc tional diagnostic of the upstream oxygen sensor;
-c atalyst diagnostic.
El ectric and combustion misfires diagnostics are permanently performed.
Functional diagnostic of the upstream oxygen sensor and catalyst diagnostic are performed one
time only during one driving, subject to reaching the imposed values of the following parameters, in
or der to a.m. diagnostics commencement:
-water /air temperature conditions;
-v ehicle speed condition (evaluation field);
-e ngine parameters conditions (inlet manifold pressure, values fields and stability);
- starting timer.
OBD information management is completing classical electric failures management.
In orde r to meet this requirement, it is obligatory the OBD operation as per following way:
- lighting (or blinking for some failures) of the OBD indicator;
-memoriz ing of the OBD failures by UCE injection.
EFFEC TS ON DIAGNOSTIC AND REPARATIONS
During reparation of vehicles equipped with OBD system, a special attention will be given to
a void the OB D indicator lighting after reparations performing and returning the vehicle to the end-
user.
Certain failures can be noticed only during driving, this being the moment when the adaptive
values ar e ”learned ”, so: The reparation validation is obligatory imposed .
REMARK: all electric failures leading to pollution limit exceeding, will produce the OBD
indicator lighting.
ATTENTION: after each test performing, the contact setting on is imposed (key in M
position) before reading the res ults by means of the C LIP tester. Any contact sett ing off
be fore reading the test results, will lead to their wrong interpretation.
“On Board D iagnostic” system c haracteristics
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IGNITION AND INJECTION
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DIAGNOSTIC CONDI T IONS
If wh en setting on the contact, with stopped engine, one of the following conditions is accom-
plished: -air temperature, red by the air temperature sensor, is not situated between –6° and 119°C.
-w ater temperature, red by the water temperature sensor, is not situated between –6° and
119°C.
-atmosphe ric pressure is under 775mbar,
then the OBD diagnostics are not authorized until the next contact setting on. In order to have a correct operation of the OBD diagnostic system, no electric failure of the
injection system must exist, even if the lighting of the OBD indicator is not established. The catalyst and oxygen sensor diagnostics can not be performed in the same time, but one
after other.
When the catalyst or oxygen sensor diagnostics are under operation, the canister purging valve
is closed, and the adaptive values are “blocked” at the last existent value prior to a.m. diagnostics
starting. TESTS PERFORMING LOGIC
-Solve fa ilures of electric nature.
-Erase a ll failures by means of the CLIP tester
-Perform the “teaching” stage of all adaptive values by the injection system (if necessary).
OB D COMPLETE ACTIVATION BY MEANS OF CLIP TESTER
-Erase all memorized failures.
-Erase the “learned” values from UCE injection if further to an intervention on an injection
system component, a disturbance of the “learned” values took place (step-by-step engine, flywheel
or RPM sensor, etc).
RETENTIONS (“LEARNINGS”) NECESSARY FOR UCEINJECT ION FOR OBD DI AGNOSTIC
〈 COUPLING/SUPPLY RATE LEARNING (state “ET014 = cylinder recognition 1” is PER-
FORMED with running engine). This is to be performed as following:
-a deceleration with “cutting” of the petrol injection in the third gear of the gearbox, be-
tween 3000-3500 rot/min for at least 2 seconds,
-a second deceleration with ”cutting” of the petrol injection in the third gear of the gearbox,
between 2400-2000 rot/min, for at least 2 seconds.
〈 MIXTURE ENRI CHING ADAPTIVE LEARNING
In order to do that, it is necessary that vehicle is running observing in the same time the pressure
ranges men tioned in the chapter “ Enriching adaptive correction”.
〈 State “ET202 = OBD diagnostic of combustion misfires taken into consideration” must be
AC TIVE.
“On Board Diagnostic” diagnostic conditions
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IGNITION AND INJECTION
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The purpose of the catalyst diagnostic is the detection of the disturbances leading to exceeding
an OBD step due to HC pollution emissions.
Th e ca talyst storage capacity of the oxygen is the indicator of its condition. When the catalyst is
beginnin g to ”age”, the storage capacity of the oxygen is diminishing, in the same time with the
dimin ishing of the treatment capacity of the pollution gases.
IMPOSED CONDITIONS FOR DIAGNOSTIC STARTING
Th e ca talyst diagnostic can be not performed but after a certain time of engine operation and
on ly if the preliminary conditions, when setting the contact on, are accomplished and preserved:
-no electr ic failure
-c ylinder’s recognition performed
-n o detected combustion misfire.
-n on-performing of the catalyst diagnostic after contact setting on.
-correct performing of the “learnings” by the UCE injection.
-water temper ature to be over 75°C
Catalyst diagnostic
Engine Speed Regime Manifold pressure Stabilization period Time before authorization
(Km/h) (rot/min) (mbar) (s ec) (min)
E7J 63-130 1792-4000 430-739 1117
FAILURES DETECT ION
Th e diagnostic is to be performed on a stabilized range in the fifth gear, at the speed of 70 Km/h.
When the diagnostic starting conditions are accomplished, excitation peaks are applied, which is
le ad ing to th e oxygen bubbles sending to the catalyst. If the catalyst is good, it w ill absorb the
ox ygen and the tension of the downstream oxygen sensor will remain at an average value. If the
catalyst is used, it will reject the oxygen and the oxygen sensor will wrongly define the phenom-
en on. The oxygen sensor tension will fluctuate. If the failures is three consecutively times con-
firmed, th e OBD indicator would be on.
Th e test duration will be not exceeding 52 seconds.
ATTENTION: after performing this tes t, the contact s etting on is imposed (key in M
position) before reading the res ults by means of the C LIP tester. Any contact sett ing off
be fore reading the test results, will lead to their wrong interpretation.
If after test performing, the CLIP tester is noticing the presence of the combustion mis-
f ires, refer to the diagnostic method related to this symptom.
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IGNITION AND INJECTION
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RE PARATI ON CONFI RM ATI ON
Check by means of the CLIP tester, the bellow states, which must have the following configu-
ration:
- ET 103: Catalyst diagnostic taken into consideration ------------------------------ ACTIVE
- ET1 07: Catalyst diagnostic performed ---------------------------------------------- ACTIVE
-n o functional failure of the catalyst is detected by the CLIP tester.
Th e purpose of the oxygen sensor diagnostic is to detect a disturbance leading to exceeding the
OBD step, caused by the HC polluting emissions. Diagnostic is performed by measuring and
co mparing the oscillating periods of the values red by the oxygen sensors.
Th e po ssible degradations of the oxygen sensors, are of two types:
-m echanical degradation of the electric component (case, wire broke) which is to be de-
fined as electric failure.
-c hemical degradation f the component, leading to a retardation of the sensor responding
time, consequently an increase of the minimal/maximal oscillating period. When the test conditions are accomplished, perform the average of the periods pointed out by
the sensor, retrieving the parasite effects, which are compared with an OBD step average period.
TEST PE RFORM ING CONDITIONS
Diagnostic of the oxygen sensor can be not performed but after a certain engine running time
an d in some specific established operation conditions and if the preliminary conditions, achieved
when setting the contact n, are achieved and preserved: -no electr ic failure
-c orrect performing of the “learnings” by the UCE injection and of the cylinders recognition.
-n o detected combustion misfire.
-N on-performing of the oxygen sensor diagnostic after contact setting on.
-water temper ature to be over 75°C
Engine Speed Regime Manifold pressure Stabilization period Time before authorization (Km/h) (rot/min) (mbar) (s ec)(min)
Oxygen sensor diagnostic
E7J 63-130 1792-3712 299-799 5 14
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IGNITION AND INJECTION
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FAILURES DETECT ION
Th is diagnostic is to be performed when driving in the fourth or fifth gear, at constant speed
(about 70 Km / h ) and for a period of minimum 60 seconds.
Oxygen sensor diagnostic
Engine Gearbox ratio Speed Maximum period
(Km/h) (sec)
E7J V63-130 52
For the accomplishment of this test, during all its running period, UCE injection is inhibiting the
co ntrol function of the canister purging valve. UCE injection will issue the recommendation
” O xyg en sensors diagnostic taken into consideration”.
ATTENTION: after performing this test, t he contact settin g on is imposed (key in M
position) before reading the res ults by means of the C LIP tester. Any contact sett ing off
be fore reading the test results, will lead to their wrong interpretation.
If after test performing, the CLIP tester is noticing a failure of the oxygen sensor, refer to
the diagnostic method related to this symptom.
RE PARATION PE RFORM ING CONFIR M ATION
Check by means of the CLIP tester, the bellow states, which must have the following configu-
ration:
- ET102: Sensors diagnostic taken into consideration ------------------------ AC TIVE
- ET1 06: Sensors diagnostic performed --------------------------------------- AC TIVE
-no cata lyst failure is detected by the CLIP tester and the OBD indicator is off.(mbar) .
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IGNITION AND INJECTION
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DF003
P RESENT
OR
MEMORIZEDAIR TEMPERATURE SENSOR CIRCUIT
1. DEF : Open circuit or short-circuit
RECOMMENDATIONS
AF TER
REPARATION
C heck the connection and the state of the air temperature sensor connector.
R eplace the sensor ’s connector if necessary.
C heck that resistance of air temperature se nsor is not zero or infinite (sensor sur e failure).
(Use chapter “Help” in order to compare the measured resistance values compared with
recommend ed ones).
R eplace the air te mperature se nsor if necessary.
C onnect the 90 w ays terminal box instead of the injection c omputer then c heck the insulation,
continuity and absence of the parasite resistance on lines: Pin 77 injection computer > pin 1 air temperature sensor
Pin 49 injection computer > pin 2 air temperature sensor
Fix if necessary
C heck the correct evolution of the sensor resistance subject to ai r temperature.
R eplace the air te mperature se nsor if necessary.
If the problem is persisting after these checking, fix the other failures the n perform the conformity
checking.
Diagnostic – Failures interpretation
If failure “DF345 : Supply 5 volts potentiometers or transducers” is present
or memorized, this must be treated with priority.
C onditions for failure detection by the computer:
- Set the contact on
- If the failure is only memorized, st art the engine in order to obtain a temperature
variation ( an engine cooling fan starting).
(The failure must pass to the present state, but it may become again memorized
i mmediately after finishing performing the previous operations).
* If the failure is memorized with OBD indicator on, check in the context part,
if state “ET274 : Air tempe rature se nsor circuit” corresponding to the OBD
i ndicator lighting request is affirmative. In this case, proceed as per bellow
m entioned method.
Perform the operations from “recommendations” for reparation confirmation.
Fix a ny other possible failures.
Erase the failures memoriz ed by the injection computer.
Perform a conformity checking by means of the CLIP tester.
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IGNITION AND INJECTION
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Diagnostic – Failures interpretation
DF004
P RESENT
OR
MEMORIZEDWATER TEMPERATURE SENSOR CIRCUIT
1. DEF : Open circuit or short-circuit
RE CO MMENDATIONS
AFTER
REPARATION
C heck the connection and the state of the air tempe ratur e sensor connector.
Re place the connector if necessary.
C heck tha t resistance of wate r te mperatur e se nsor is not zero or infinite (sensor sur e failure).
Use chapter “Help” in order to compare the measured resistance values compared with
recommend ed ones).
Repl ace the wate r tempe ratur e se nsor if necessary.
C onnect the 90 w ays terminal box instead of the injection c omputer then c heck the insulation,
continuity and absence of the parasite resistance on lines: Pin 73 injection computer > pin B1 water temperature sensor
Pin 13 injection computer > pin B2 water temperature sensor
Fix if necessary
C heck the correct evolution of the sensor resistance subject to the temperature.
Repl ace the wate r tempe ratur e se nsor if necessary.
If the problem is persisting after these checking, fix the other failures the n perform the conformity
checking.
If failure “DF345 : Supply 5 volts potentiometers or transducers” is present
or memorized, this must be treated with priority.
Conditions for failure detection by the compu ter:
- Set the contact on
- If the failure is only memorized, st art the engine in order to obtain a temperature
variation (an engine cooling fan starting).
(The failure must pass to the present state, but i t may become again memorized
imme diately after finishing performing the previous operations).
* If the failure is memorized with OBD indicator on, check in the context part,
if state “ET275 : Water temperature sensor circuit” c orresponding to the
OBD indicator lighting request is affirma tive. In this case, proceed a s per
bellow mentioned method.
P erform the operations from “recommendations” for reparation confirmation.
Fix a ny other possible failures.
Erase the failures memoriz ed by the injection computer.
Perform a conformity checking by means of the CLIP tester.
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IGNITION AND INJECTION
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AFTER
REPARATION P
erform the operations from “recommendations” for reparation confirmation.
Fix a ny other possible failures.
Erase the failures memoriz ed by the injection computer.
Perform a conformity checking by means of the CLIP tester.
C heck the c onnection and the state of the de tonation sensor connector.
R eplace the sensor ’s connector if necessary.
C heck the tightening of the RPM sensor on the engine block
Fi x if necessary.
C onnect the 90 w ays terminal box instead of the injection c omputer then c heck the insulation,
continuity and absence of the parasite resistance on lines:
Pin 20 injection computer > p in 1 detonation sensor
Pin 79 injection computer > p in 2 detonation sensor
Pin 19 injection computer > RPM sensor sc reening
Fix if necessary
If the problem is persisting after these checking, fix the other failures the n perform the conformity
checking.
RE CO MMENDATIONS
Conditions for diagnostic application for memorized failure:
Perform a road test with warm and in charge engine.
* If the failure is memorized with OBD indicator on, check in the context part,
if state “ET289 : Detonation sensor cir cuit” corresponding to the OBD
i ndicator lighting request is affirmative. In this case , proceed as per bellow
m entioned method.
Diagnostic – Failures interpretation
DF006
P RESENT
OR
ME MO RIZEDDETONATION SENSOR CIRCUIT
1. DEF : Open circuit or short-circuit
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IGNITION AND INJECTION
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RE CO MM ENDATIONS
In order to perform this diagnostic, the pressure sensor must be not in
failure.
Conditions for diagnostic appl ication for memorized failure :
Se t the contact off and wait until the communication computer-CLIP tester
is lost.
Set the contact on, enter in dialog with the computer and eras e the memorized
failures. Act upon the starter for 10 seconds or make the engine idle running.
* If the failure is memor ized with OBD indicator on, check in the conte xt
part, if sta te “ET276 : Engine flywheel tooting dama ge” corresponding to
t he OBD indicator lighting request is affirma tive. In this case, proceed as
per bellow mentioned method.
AF TER
REPARATION
RPM SIGNAL INFORMATION
1. DEF : Engine flywheel tooting damage
2. DEF: tooth signal abse nce
C heck the connection and the condition of the RPM sensor connector
R eplace the connector if necessary.
C heck the cleaning state and the correct attachment of the RPM sensor
Fi x if necessary.
C heck the resistance of the RPM sensor.
R eplace the RPM sensor if necessary.
C onnect the 90 ways terminal box instead of the injection computer then c heck the insulation,
continuity and absence of the parasite resistance on lines: Pin 54 injection computer > p in A RPM sensor
Pin 24 injection computer > pi n B RPM sensor
Fi x if necessary.
If 1. DEF is occurring, check the engine flywheel condition.
If the problem is persisting after these checking, fix the other failures then perform the conformity
checking.
Diagnostic – Failures interpretation
DF017
P RESENT
OR
ME MO RIZED
Che ck tha t state “ ET202: Dia gnostic OBD c ombustion misfires taken into
consideration”, is ACTIVE. Contrary, it is necessary, the re-act ivation of “learning”
t he RPM signal by the injection computer.
Fix the others possible failures and then perform the conformity checking.
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IGNITION AND INJECTION
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UPSTREAM OXYGEN SENSOR HEATING CIRCUIT
1DEF : Open circuit or short-circuit
CO : open circuit
CC.O : s hot circuit at mass
CC.1 : s hort circuit at + 12 V.

DF018
P RESENT
OR
MEMO RIZED
Conditions for diagnostic appl ication for memorized failure :
- Start the engine and ensure that state “ AC261: Upstream O2 sensor
heating” is ACTIVE.
- Or act upon the actua tor control “ AC261: upstream 02 sensor heating ”.
In case of failures addition, treat as most important failure “DF009 actuators
relay control circuit” .
* If the failure is memorized with OBD indicator on, check in the context part,
if state “ET117 : Cani ster purging control” corresponding to the OBD i nd icator
lighting request is affirmative. In this case, proceed as per bellow mentioned
met hod.
RECOMMENDATIONS
Perform the operations from “recommendations” for reparation confirmation.
Fi x any other possible failures.
Erase the failures memoriz ed by the injection computer.
Pe rform a conformity checking by means of the CLIP tester.
AF
TER
REPARATION
Diagnostic – Failures interpretation
C heck the connection and the connector state of the oxygen sensor.
C hange the connector if necessary.
C heck the heating resistance of the oxygen sensor. Refer to chapter ” Help” for res istance values .
Repl ace the sensor if necessary.
C heck the presence of +12 Volts on A way of the oxygen s ensor.
Fi x the electric connection between A way oxygen sensor and the actuators relay.
C onnect the 90 ways terminal box instead of the injection computer then check the insulati on, the
continuity and the abse nce of the parasite resistance on line: :
Pin 63 injection computer > pin B oxygen sensor
Fi x if necessary.
If the problem is persisting after these checking, fix the other failures then perform the conformity
checking.
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