sensor DACIA SOLENZA 2004 User Guide

MOTEUR E7J-26213
FUEL SUPPLY
13 - 1
REMARK:
Only vehicle observing the de -pollution norm EURO 00 are equipped wi th shock
se nsor.
Supply int erruption
1
PURPOSE
To avoid the fire hazard due to the fuel losses, that may occur in case of an accident.
OPERATION
The hazard sensor ( 1) is placed in the engine compartment, being mounted on the left shock
absorber column.
In case of shock, the sensor ball l eaves its lodgement, t hus interrupting the electric c ircuit
between the control relay of the petrol electric fuel pump and the electric petrol pump.
HAZARD SENSOR RE-STARTING
The upper part of the hazard sensor is to be pushed to re-position the ball i nto its lodgement
and thus to re-start the sensor.
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ENGINE E7J-26216
16 - 6
ALTERNATOR – STARTER
ENGINE STARTER
E7 J - 262 D 907 - M00 2T 13581
IDENTIFICATION
DIAGNOSTIC
Special tool : CLIP tester – TECHNIC for measuring the battery voltage and the absorbed
intensity in the starting stage.
OPERATION ABNORMALITIES THAT MIGHT BE NOTICED
- Battery failure = large voltage drop on starter during engine starting stage.
- Blocked starter = the absorbed current is very high.
- Solenoid failure = the absorbed current is very low.
In order to perform the measurements, it is necessary the engine drive by means of the starter,
but stopping the engine starting.
To do that, disconnect the RPM sensor (located on clutch casing).
REMARK:
After performing this checking, erase by means of the CLIP tester, the possible failures
memorized by the computer.
St arter
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IGNITION AND INJECTION
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PRESENTATION
The system is composed of : -electronic control unit (UCE injection);
-a double ignition coil;
-f our spark plugs;
- spark plugs cables.
OPERATING PRINCIPLE
Subject to the information received from different sensors, but mainly subject to engine RPM
and charge, the electronic control unit will establish the advance at ignition, will identify the cylinders
being at upper dead point and consequently , will control the corresponding coil to them.
This is producing the spark at the level of the two cylinders being at upper de ad point,
interrupting the mass connection of the corresponding coil.
Ignition system
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IGNITION AND INJECTION
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ELEMENTS LOCATION
1. RPM sensor ( tightening moment : 0.8 daNm);
2. Water temperature sensor (tightening moment: 2.5 daNm);
3. Atmospheric pressure sensor;
4. Step-by-step engine for idling adjustment;
6. Air temperature sensor;
7. UCE injection;
8. Choke sensor;
9. Fuse and relays box;
10. Air filter;
11 .D etonation sensor (tightening moment: 2.5 daNm);
12. Oxygen sensor (tightening moment: 4.5 daNm);
13. Ignition coil;
14. Carbon canister with purging valve included;
15. Power steering pressure controller(tightening moment: 1.2 daNm);
16. Air conditioning pressure controller (tightening moment: 0.8 daNm).
Injection system
13 10 11 5 4 6 3 2 1 8 9
14 1 6 15 12 7
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IGNITION AND INJECTION
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7. UC E inj ection;
8. Choke sensor;1. R PM sensor;
2.
Wa ter temperature sensor;
Injection system
8
7
2
1
4
5
63
3. At mospheric pressure sensor;
4.
St ep- by - st ep engin e for idli ng
adjustment
;
5.
Valve position po tentiometer;
6.
A ir temperature sensor;
;
13. Ig nit ion coil;
13
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IGNITION AND INJECTION
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Injection system
In the fuse box located in the engine compartment, the following relays may be identified:
A. Co mpressor relay
B. Engine c ooling fan relay, step I
C. Engine cooling fan relay, step II
D. UCE injection relay, canister-purging valve
E. Fog projectors relay
H. Fuel pump and ignition coil relay
14. C arbon canister with purging valve
included
;
16.
Power steering pressure controller; 12.
Oxygen sensor;
15.
A ir conditioning pressure controller.
1
15
12
1614
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IGNITION AND INJECTION
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Injection system
WATER TEMPERATURE SENSOR
The water temperature sensor ( 1) is sending to UCE injection the information regarding water tempera-
tu re, and another information is sent to the indicator from the instrument panel, which will show the water
tem perature.
In case of an alert regarding the water temperature, UCE injection will control the lightening of
the water temperature indicator from the instrument panel.
Subject to water temperature, UCE injection will control:
- injection system;
- relays for controlling the engine cooling fan.
When setting the contact on, the water temperature indicator located on the instrument panel,
will be lighted for 3 seconds, then it will turn off.
1
1
If after the contact is set off, in the next 2 minutes from engine stopping, the water temperature
is reaching 102 °C, and t hen the injection computer i s control ling t he starting of the e ngine
cooling fan at low speed. When the temperature is lowering at 95°C, the engine cooling fan stopping will be controlled;
its operation must not exceed 10 minutes after engine stopping.
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IGNITION AND INJECTION
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MU LTI-POINT INJE CT ION CHARACT E RISTICS
〈 SIRIUS 32 with 90 pins computer is managing the ignition and the injection.
〈 For diagnostic, CLIP Sagem tester is to be used.
〈 The injection system in use is a sequential multi-point type, injection and ignition phases
controlling being based on the SIRIUS 32 computer program logic, starting from the signal received
from the RPM sensor.
〈The pr esence of the anti-pollution indicator OBD on the instrument panel, that is lighted for
3 seconds when setting the contact on, is specific to the vehicles observing pollution norms EURO
2000. The injection computer of these vehicles is provided with diagnostic system type OBD (“ On
Board Diagnostic).
〈 Idling regime correction is subject to:
-c limate maintenance on/off control (air conditioning)
-e lectrical balance on vehicle, as a result of connecting different electric consumers.
〈 EURO 2000 specific vehicles are provided with two oxygen sensors located in front of the
cata lyst (upstream oxygen sensor) and after catalyst (downstream oxygen sensor).
〈 At EURO 2000 specific vehicles, the fuel supply is performed at constant pressure (3.5 ±
0.2 bar), the pressure controller placed in the fuel tank being provided for this purpose.
Chara cteristics
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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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ENRICHING CORRECTION
After connecting the CLIP tester, select “Injection diagnostic” and refer to “PR035 parameter:
En riching correction value”. The value displayed is representing the corrections average imposed
by the UCE injection, subject to the fuel mixture enriching, red by the upstream oxygen sensor (the
sensor is analyzing the oxygen concentration from the exhaust gases). The co rrection value has an average value of 128 and the limits are 0 and 255:
-a value lower than 128 has as result, the request for fuel mixture impoverishment
-a value greater than 128 have as results the request for fuel mixture enriching.
ENRI CHING ADJUSTMEN T PHASE
Admission in the enriching adjustment phase is becoming effective after a certain time from
en gine starting, with the condition that water temperature is reaching to over 22°C and 28 seconds
from engine star ting have passed.
If ad m ission in the enriching adjustment phase is not effective, the value of PR035 parameter is
128.
Even when conditions for enriching adjustment phase beginning are accomplished, UCE injec-
tion however, will not take into account the voltage supplied by the downstream oxygen sensor, in
the following situations: -acceleration pedal fully pressed: PR035 is variable and higher than 128;
-sudden ac celeration: PR035 is variable and higher than 128;
-d ecelera tion (engine braking) followed by UCE injection detection of the position ”free” of
the acceleration pedal: PR035 = 128; -down stream oxygen sensor failure: PR035 = 128.
WORKING PROCEDURE “DAMAGED” IN CASE OF DOWNSTREAM OXYGEN SENSOR FAILURE
When the voltage supplied towards UCE injection by the downstream oxygen sensor is not
correct (showing small or not at all variations) in the enriching adjustment phase, then UCE injec-
tion will not pass to the working procedure “damaged” (PR035 = 128) unless the failure has been
rec ognized as being present for 10 seconds. Only in these conditions, the failure will be memorized
by the UCE injection.
If UC E injection is detecting a present failure of the oxygen sensor and if this failure has been
al rea dy memorized, then UCE injection will come out from the enriching adjustment phase, passing
to phase “open loop”. In this situation PR035 parameter will not show variations and will have the
value 128.
Enriching adjustment
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