Page 65 of 891
ENGINE E7J-26210
ENGINE ASSEMBLY
10 - 40
Lower casing
REMOU NT I NG
Clean the lower casing and the cylinders casing of old sealant material.
A pply a layer ( D) of RHODORSEAL 5661 of about 3 mm thick, according to the bellow
drawing.
Do not forget the r eplacement of the two half-moon gaskets from casing e nds (A).
Perform the dismounting operations in the reverse order.
Tighten the screws and nuts to the required moment.
REMARK:
Relative displacement between lower casing and cylinders casing, on the assem-
bling surface with t he gearbox, must not exceed 0.3 mm.
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ENGINE E7J-26212
12 - 1
F UEL M IXTURE
Chara cteristics
ENGINE
VehicleGearbox Type Index Bo re StrokeCylinder
(mm) (mm)capacity
(cm3)
SOLENZA JH3-051 E7J 262 75,8 77 1390 9,5/1
T (0C) 250C500C800C1100C
Air T sensor 2058 - 20 45 816 - 804 315 - 303 141 - 129
R (Ohm)
Water T sensor 2300 - 2100 850 - 750 275 - 290 110 - 120
R (Ohm)
(1) The CO value at 2500 rpm must be maximum 0.3 %.
〈 For a water temperature of over 80 ° C and after a steady value of 2500 rpm during 30
sec; after this, return to idle running and perform measurement of polluting emissions level.
The water and air temperature sensors are of CTN type (negative coefficient of temperature)
and their resistance variation subject to the temperature, has the following evolution:
Verificãri efectuate la ralanti *
Engine Emisii poluani Fuel
Ty p e I ndex Revolution CO(%) CO
2(%) HC Lambda (minimum octane
(RPM) (1) (ppm) ( λλλλ
) number)
E7J262 750 ± 50 0,5 14,5 100 0,97.... Unleaded fuel
ma xm inmax ....1,03 (CO95)
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Page 92 of 891

16ENGINE E7J-262
16 - 5
ALTERNATOR – STARTER
21
Vehicles equipped with air conditioning
DISMOUNTIN G
Place the vehicle on a two-column elevator
Disconnect the battery
Dismount the alternator upper attachment screw.
Dismount the front right wheel.
Lift the vehicle.
Dismo unt :
- protection fairing;
- lateral tie-rod ( 1);
-s hock absorber two attachment screws (2) on steering knuckle.
Swing over the steering knuckle and remove the right planetary transmission from the plan-
etary gear of the gearbox. Disconnect the electric connectors of the alternator.
Dismount the alternator lower attachment screw.
Dismount the alternator’s belt.
Remove the alternator, laterally by the right planetary transmission.
REMARK:
In order to replace the alternator belt, first dismount the accessories driving belt
(compressor and/or power steering pump).
R EMOU NT I NG
Perform the dismounting operations in the reverse order.
Tighten the alternator driving belt to 263 HZ ± 10% by means of the MOT 1505 device (see
the m ethod described in c hapter 07 “ Accessories belts tightening”)
Tighten to the required moment the alternator’s attachment screws.
REMARK:
A dismounted belt is not to be remounted, but replaced.
Alternator
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Page 94 of 891
16ENGINE E7J-262
16 - 7
ALTERNATOR – STARTER
TIGHTENI NG MOMENTS (daNm)
Starter attachment screws 4.4
Control bar attachment screw
on ge arbox connecting rod 2.7
DISMOUNTIN G
Place t he vehicle on a two-column elevator.
Disconnect the battery.
Dismount the attachment nuts of the gazes exhaust vessel.
Dismount the hoses support attachment nut on the engine lifting support.
Dismount the control bar attachment screw on the gearbox connecting control rod (recover
the bushing). Dismount the starter attachment screws (1).
Suspend the vehicle.
Disconnect the starter electric connectors.
Remove the starter through the lower part of the engine compartment.
R EMOU NT I NG
Perform the dismounting operations in the reverse order.
Tighten the screws and nuts to the required moment.
Fill the protection bellows of the gearbox connecting rod joint, with grease Molycote 33M –
10 ml.
St arter
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Page 111 of 891

IGNITION AND INJECTION
17
17 - 17
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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Page 114 of 891

IGNITION AND INJECTION
17
17 - 20
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
17
17 - 24
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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Page 139 of 891

IGNITION AND INJECTION
17
17 - 45
If failure “DF345” : Supply 5 volts potentiometers or sensors” is present or
memorize d, this must be treated as most important.
Conditions for diagnostic appl ication to memorized failure:
- During road test, smooth driving, after an engine fan starting and state
“ET027: Enriching double loop” to be active.
- During road test, smooth driving, after an engine fan starting, immediately
followed by a deceleration (rising gradie nt) with sta te “ET003: Released
pedal valve pos ition” active, gearbox ratio engaged and clutched.
* If the failure is memoriz ed with OBD indicator on, check in the context
part, if state “ET287 : Downstream oxygen sensor circuit” corresponding
to the OBD indicator lighting request is affirmative. In this case , proceed
as per bellow mentioned method
C heck the connection and condition of the oxygen sensor connector
R eplace the connector if necessary.
C heck for lack of tightening on the routing between the two oxygen sensors.
If the vehicle is running more in the city, perform a cleaning of the oxygen sensor.
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 44 injection computer > pin C oxygen sensor
Pin 76 injection computer > pin D oxygen sensor
Fix if necessary.
If the proble m is persisting, replace the oxygen sensor.
If the problem is persisting after these checking, treat the other failures then perform the conformity
checking.
Perform the operations from ” recommendations” for reparation confirma tion.
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.
AF
TER
REPARATION
Diagnostic – Failures interpretation
DF 058
P RESENT
OR
ME MO RIZEDDOWNSTREAM OXYGEN SENSOR CIRCUIT
1.DEF : Open circuit or short-circuit
RE CO MME NDAT I O N S
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