DACIA SOLENZA 2004 Repair Manual

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ROAD TEST
Test performing conditions: -warm engine ( water temperature > 80°C);
-engine RPM not exceeding 4000 rot/min.
For this test, it is recommended starting from a sufficient low engine RPM, in gearbox third or
fourth gear, accelerating then progressively in order to obtain a pressure stability in th e inlet (PR001
= inlet manifold pressure) for 10 seconds in each area, as per next table:
Enriching adaptive correction
Area 1 Area 2Area 3Ar ea 4Area 5
(mbar) (mbar) (mbar) (mbar) (mbar)
250-------------- 399 ---------------- 517 ----------------- 635 ----------------- 735 -------------- 873
Average 325 Average 458 Average 576 Average 694 Average 813
After performing this test, the corrections will become effective.
PR031 parameter (adaptive enriching at idling) is more fluctuating in the idling and small charges
phases, and PR030 parameter (adaptive enriching during running) is more fluctuating in the mo-
ment of medium and full charges, but both parameters are active in all areas of inlet manifold
pressure evolution.
It is necessary that road test to be followed by a normal driving running, constant and fluctuate,
on a 5-10 Km.
After test performing, connect the CLIP tester and refer to the values of PR030 and PR031
pa rame ters. If their values are initially at 128, after correct performing the road test, they must
chan ge. Contrary, perform again the road test, strictly observing the imposed conditions.
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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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CONDITIONS OF OBD INDI CATOR L IGHTING
During driving it is possible that certain functions are not subject to diagnostic (for instance due
to crowded traffic driving).
Indicator lighting -it is occurring if the same OBD failure is detected during three consecutive driving or
fu rther to an electric failure.
Indicator blinking -it is occurring if combustion misfires are detected, that may cause the catalyst damage.
Indicator off
- it is occurring if the OBD failure is not happening during three consecutive driving, but the
fa ilure in cause will remain memorized by the UCE injection.
In orde r to cancel the failures memorized by the UCE injection, failures must not be detected
du ring 40 consecutive tests (or to perform the erasing of the memorized failures, by means of the
CLIP te st er).
O BSERVATION : if a previously detected failure has been not detected again, then the cause
may be: -driving type performed by the end-user, not driving exactly in the conditions imposed for
fa ilure detection;
-rando m character (non-permanent) of the respective failure.
“On Board Diagnostic” lighting conditions
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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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This diagnostic may detect:
-spark plug fouling or smoking,
-fou ling or modification from the normal value of the injectors flow,
-f uel supply system abnormalities (pressure controller, fuel pump,..)
-pr oblems with the electric connections for controlling fuel supply circuits and the injection.
Th e di ag nostic is performed by variations measurement of the engine prompt rotation speed.
Notice of a couple decrease is allowing the defective combustion recognition as failure cause.
Th is diagnostic is done almost permanently during driving. Non accomplishment of the diagnos-
tic or recognition of the existence of failure, is leading to other OBD diagnostics inhibition. This diagnostic is enabling the identification of two types of failures:
-de structive combustion misfires, which are causing the catalyst damage. These are gener-
ating the immediate blinking of the OBD indicator. -Polluting combustion misfires, leading to e xceeding a pre-established OBD pollution limit.
These ar e generating the permanent lighting of the OBD indicator, if the cause detection is
taken place during three consecutive running.
DE T ECT ION CONDITIONS
At the beginning, it must be checked if the “learning” stages of the adaptive values by the UCE
injection have been correctly performed. Also the preliminary conditions imposed when setting the
co ntact on and those from checking moment, must be accomplished.
Check by means of the CLIP tester if the bellow mentioned states are in the following configu-
ration:
ET0 14 Cylinder 1 recognition----------------------------------------------------------------- DONE
ET2 02 OBD diagnostic of combustion misfires taken into consideration--------------AC TIVE
Detection is accomplished after the water temperature is exceeding 75°C, at three rotation
steps, between idling and 4500 rot/min. It is also possible, test performing by maintaining the engine
at idling for a period of time of 11 minutes.
ATTENTION: after performing this test, the contact set ting on is imposed (key in M
position) before reading the r esults by means of the CLI P t ester. Any contact set ting 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.
CONFIRM ATION OF THE RE PARATION PE RFORM ING
-Check by m eans of the CLIP tester, the bellow states, which must have the following
c onfiguration:
ET0 14 Cylinder 1 recognition -------------------------------------------------------------------- DONE
ET2 02 OBD diagnostic of combustion misfires taken into consideration ----------------- AC TIVE
-N o failures is detected by the CLIP tester, and the OBD indicator must be off.
Diagnostic of combustion misfires detection
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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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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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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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Diagnostic – General
This document is presenting the diagnostic for the injection computers SIRIUS 32, which have
nr.program E1 and Diag.variant 10.
In order to perform the diagnostic of this injection system, it is necessary to use the following
elem ents:
-D iagnostic Technical Note
-F unctional electric diagram of the respective vehicle
-CLIP technic al tester, 90 ways terminal (ELE 1497).
DIAGNOSTIC PE RFORMING STEPS
- CLIP tester connection to the diagnostic socket for identification of the SIRIUS 32 computer
type, of the “E1” program and the diagnostic variant “10”.
- Informati on identification in the document “Diagnostic” corresponding to the injection system.
- Reading and observing of the working instructions presented in the diagnostic documentation.
- Reading of the failures memorized by the injection computer, by means of the CLIP tester and
caus es identification by means of chapter “ Failures interpretation”
DO NOT ERASE T HE MEMORIZED FAILURES BEFORE RE ADING THEM BY MEANS OF THE CLIP TESTER
Write the memorized failures, after having previously red by means of the CLIP tester, in order
to be taken into consideration and treated, if these are to be themselves erased.
1. Treat all existent failures.
2. Memorized failures:
Perform the operations mentioned in “Recommendations” corresponding to each failure, in order
to confirm the failure.
If the failure is becoming present, then it must be treated.
3. For vehicle provided with OBD.
If the failure is memorized and the OBD indicator is on, read the failure context remarks, the
co rres po nding state at” OBD indicator lighting requesting”, in order to establish if this is the cause
for i ndicator lighting.
In such case, treat the failure as being present.
REMARK : the state “ OBD indicator lighting requesting” may be YES or NO and may be
co nsulted by selecting menu “ FUNCTIONS”, then OBD INDICATOR LIGHTING”.
Perform the conformity checking (evidencing of eventually disturbances not yet declared by the
system self-diagnostic). Validate the reparation performing (failure cause elimination).
Take benefit of the information from the failure-locating tree, in case the problem is persisting.
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DF002
P RESENT
OR
MEMORIZEDVALVE POTENTIOMETER CIRCUIT
1. DEF : Open circuit or short-circuit
AF TER
REPARATION Perform the operations from “recommendations” for reparat
ion 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.
RE COMMENDATIONS
If failure “DF345 : Supply 5 volts potentiometers or trans ducers” is present
or memorized, this must be treated with priority.
Conditions for diagnostic appl ication for memorized failure:
- Set the contact on and maintain it like this for 10 seconds in the rele ased
pedal position.
- Easy alter the potentiometer valve position, from released pedal to maximum
acceleration.
- Maintain the pedal in the maximum pressed pos ition for 10 seconds.
(The failure must pass to the pres ent state, but it may become again memorized
imm ediately after finishing performing the previous operations).
* If the failure is memorized with OBD indicator on, check in the context part,
if state “ET284 : Valve potentiometer circuit” corresponding to the OBD
i ndicator lighting request is affirmative. In this case, proceed as per bellow
me ntioned method.
Check the connection and the state of the valve potentiometer connector.
R eplace its connector if necessary.
Pe rform measurement of the valve potentiometer resistance (resistance is zero or infinite in case of
sure failure).
C heck tha t potentiometer resistance is pr ogressively increasing, by acting upon the valve from
released acceleration pedal pos ition to the maximal accele ration pedal.
(Use chapter “Help” in order to compare the measured resistance values compared with
recommend ed ones).
Check if the valve is well acting the potentiometer.
M ake it working or replace the potentiometer if necessa ry.
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 75 injection computer > pin A valve potenti ometer
Pin 74 injection computer > pin B valve potenti ometer
Pin 43 injection computer > pin C valve potenti ometer.
Fix if necessary
If the problem is persisting after these checking, use the fixing method for failure DF345.
Diagnostic – Failures interpretation
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