2004 DACIA SOLENZA check engine

IGNITION AND INJECTION
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The e ngines equipped with UCE injection type SIRIUS 32 are provided with oxygen sensors, as
follows:
-one up stream oxygen sensor – for engines corresponding to EURO 96 de-pollution norms.
- one upstream oxygen sensor and one downstream oxygen sensor – for engine s corresponding
to EURO 2000 de-pollution norms.
OXYGEN SENSORS HEATING
Oxygen sensors heating control is given by UCE injection as follows: -for up stream oxygen sensor – starting with engine starting.
-f or downstream oxygen sensor – after a certain time from engine starting, imposed by the
UCE injection charts, being subject to engine RPM and water temperature, red only when the
accelera tion pedal is not released.
UPSTREAM OXYGEN SENSOR VOLTAGE
After connecting the CLIP tester select “ Injection Diagnostic” and refer to “PR009 parameter:
Upstream oxygen sensor voltage”. The displayed value, expressed in mV, is representing the voltage
supplied towards UCE injection by the oxygen sensor placed upstream as the catalyst. When the
engine is running in the “closed loop” phase, voltage must fluctuate quickly between the following
lim i ts :
-20 mV ± 50 for poor fuel mixture;
-840 mV ± 70 for rich fuel mixture.
Smaller is the difference between these two limits, less good the sensor information is
(g en erally this difference is of 500 mV).
DOWNSTREAM OXYGEN SENSOR VOLTAGE
After connecting the CLIP tester select “ Injection Diagnostic” and refer to “PR010 param-
eter: Downstream oxygen sensor voltage”. The displayed value, expressed in mV, is representing
the voltage supplied towards UCE injection by the oxygen sensor placed after the catalyst. This
sensor has the purpose to catalyst diagnostic and to perform a second checking, more exactly, of
the fuel mixture enriching. This function is becoming active only after a certain time of engine
running at warm and it is not active in the engine idling phase.
When the engine is running in “closed loop” phase and at stabilized speed, voltage must fluctuate
ha ving between the maximal and minimal limits a difference of 600-mV ± 100. At deceleration,
voltage mu st be under 200 mV.
Enriching adjustment
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IGNITION AND INJECTION
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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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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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DF012
P RESENT
OR
ME MO RIZEDINJECTION > AC CONNECTION
No comments failure
RE CO MM ENDATIONS
Conditions for diagnostic appl ication for memorized failure :
Failure is declared present further to a 10 seconds timing with engine running
and climate control under operation, state ET009: active (during test, battery
voltage must be not under 11 V).
AF TER
REPARATION Pe
rform 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.
Diagnostic – Failures interpretation
Connect the 90 ways terminal box instead of the injection computer then check the insulation,
continuity and absence of the parasite resistance on line 32 of the injection computer.
Fi x if necessary.
Re fer to climate control diagnostic if the incident is persisting.
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