2004 DACIA SUPERNOVA check engine

E7J-A-2/60 ENGINE17
IGNITION AND INJECTION
17 - 26
DIAG
NOSING-INTERPRETING THE DEFECTS
DEFECT
PRESENT
OR
MEMORIZED
CYLINDER 4 - INJECTOR CIRCUIT
1. Short-circuit at 12 V along the way to the pin 89 of the calculator (injector command)
2. Short-circuit to the mass along the way to pin 89 of the calculator (injector command)
3. Open c ircuit along the way to the pin 89 of the calculator (injector
command)
SUGGESTIONS
Conditions of breakdown detection by the calculator:
-the engi ne is started
Condition of performing the diagnosing:
-defec t is present
-the defect has been memorized but is recorded in the “present” state.
Check the resistance of injector 4.
Change injector if necessary.
Check, after setting the contact, the presence of 12V at the pin 1 of injector 4.
Remedy, if necessary, the circuit up to the 238 actuating relay.
Connect the 90-way terminal-tester instead of the calculator and check the insulation
and the co ntinuity along the circuit:
pin 89 of calculator ♦ pin 2 of injector 4.
Remedy if necessary.
The proble m is not yet solved! Consequently, the injection calculator must be changed.
CAUTION! The destruction of the calculator has probably been caused by an electric shock.
The cause of the destruction must be found before mounting a new
calcul ator.
AFTER
REPAIR Er
ase defects memorized by the computer.
Perform the steps under “Suggestions” to confirm the repair.
Remedy other possible defects
9.
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E7J-A-2/60 ENGINE17
IGNITION AND INJECTION
17 - 27
DIAG
NOSING-INTERPRETING THE DEFECTS
DEFECT
PRESENT OR
MEMORI ZED
CYLINDERS 1 AND 4 IGNITION COIL CIRCUIT
1. Short-circuit at 12 V along the way to the pin 32 of the calculator (cylinders 1 and 4 coil command)
2. Open circuit or short-circuit to the mass along the way to pin 32 of the calculator (cylinders 1 and 4 coil command).
SUGGESTIONS
Conditions of breakdown detection by the calculator:
-the engine is started or turned with the starter for 10 seconds
Condition of performing the diagnosing:
-defec t is present
-the defect has been memorized but is recorded in the “present”
state.
Check the re s istance of co il be tween th e outlets for cy linders 1 and 4.
Change the co il if ne ce ss ar y.
Check, after setting the contact, the presence of +12V at the pole 1 of oil pump 236
re lay.
Remedy it if necessary.
Connect the 90-way terminal-tester instead of the injection calculator and check the
ins ul ati on and the continuit y al ong the cir cu it:
pin 32 of cal cul ato r ♦ pin A of ignition coil .
Remedy if necessary.
Check:
-con nection and state of the 236 oil-pump relay
-the presence of +12 V, after contact, at the 1 pole of the 236 relay
-the circu it between the 2 pole of the 236 relay and pin 68 of the injection calculator
-the coil of the 236 o il-pump relay.
Remedy if necessary.
The problem is not yet solved! Consequently, the injection calculator must be changed.
CAUTION! The destruction of the calculator has probably been caused by an electric shock.
The cause of the destruction must be found before mounting a new
calcul ator.
10.
AFTER
REPA IREr
ase defects memorized by the computer.
Perform the steps under “Suggestions” to confirm the repair.
Remedy other possible defects.
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E7J-A-2/60 ENGINE17
IGNITION AND INJECTION
17 - 28
DIAG
NOSING-INTERPRETING THE DEFECTS
CYLINDERS 2 AND 3 IGNITION COIL CIRCUIT
1. Short-circuit at 12 V along the way to the pin 1 of the
calculator (cylinders 2 and 3 coil command)
2. Open circuit or short-circuit to the mass along the way to pin 1 of th e calcula tor (cylinders 2 and 3 coil command).
DEFECT
PRESENT OR
MEMO RIZED
Conditions of breakdown detection by the calculator:
-the engine is started or turned with the starter for 10 seconds
Condition of performing the diagnosing:
-defec t is present
-the defect h as been memorized but is recorded in the “present”
state.
S UGGESTIONS
Check the resistance of coil between the outlets for cylinders 2 and 3.
Change the coil if necessary.
Check, after setting the contact, the presence of +12V at the pole 1 of oil pump 236
relay.
Remedy it if necessary.
Connect the 90-way terminal-tester instead of the injection calculator and check the
insulation and the continuity along the circuit:
pin 1 of calcul ato r
♦ pi n B of ignition coil.
Remedy if necessary.
Check:
-con nection and state of the 236 oil-pump relay
-the presence of +12 V, after contact, at the 1 pole of the 236 relay
-the circu it between the 2 pole of the 236 relay and pin 68 of the injection calculator
-the coil of the 236 oil-pump relay.
Remedy if necessary.
The problem is not yet solved! Consequently, the injection calculator must be changed.
CAUTION! The destruction of the calculator has probably been caused by an electric shock.
The cause of the destruction must be found before mounting a new
calcul ator.
Er ase defects memorized by the computer.
Perform the steps under “Suggestions” to confirm the repair.
Remedy other possible defects.
AFTER
R EPAIR
11.
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E7J-A-2/60 ENGINE17
IGNITION AND INJECTION
17 - 29
DIAG
NOSING-INTERPRETING THE DEFECTS
DEF ECT
PRE SEN TOR
MEMORIZEDINFORMATION ROTATION SENSOR
1. Faulty cogs of the engine flywheel
2. Absence of flywheel signal.
In orde r to do this type of diagnosing, the sensor for atmospheric pressure
mu st not be faulty
Conditions of breakdown detection by the calculator:
-the contact is taken and the dialogue with the calculator is waited for to
be lo st, then the dialogue with the calculator is re-entered and the memo-
rized defec ts are erased
-opera te the starter for 10 seconds or start the engine and keep it in idle
m ode.
Condition of performing the diagnosing:
-defec t is present
-the defect has been memorized but is recorded in the “present” state.
Check the connection and the state of the rotation sensor
Change the connector if necessary.
Check the resistance of rotation sensor.
Remedy rotation sensor if necessary.
Connect the 90-way terminal-tester instead of the calculator and check the insulation, the
continuity and the absence of contact resistance along the circuits:
pin 54 of calculator
♦ pin A of rotation sensor
pin 24 of calculator
♦ pin B of ro tation sensor.
Remedy if necessary.
Check the condition of the cogs of the engine flywheel.
Change the rotation sensor if the incident persists.
The proble m is not yet solved! Consequently, the injection calculator must be changed.
CAUTION! The destruction of the calculator has probably been caused by an electric shock.
The cause of the destruction must be found before mounting a new
calcul ator.
Er ase defects memorized by the computer.
Perform the steps under “Suggestions” to confirm the repair.
Remedy other possible defects.
AFTER
R EPAIR
12.
SUGGESTIONS
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E7J-A-2/60 ENGINE17
IGNITION AND INJECTION
17 - 30
DIAG
NOSING-INTERPRETING THE DEFECTS
DEFECT
PRESENTANTI-STARTER
El ectric problem along the line transmitting the anti-starter code.
SUGGESTIONS
13.
Check the connection and the condition of the connectors along the circuit to pin 58 of
injection calculator
Change the faulty connector if necessary.
Connect the 90-way terminal-tester instead of the calculator and check the insulation
and the con tinuity of the circuit:
pin 58 of calculator
♦ pin A6 of UCE decoding device.
Remedy if necessary.
If the incident persists, refer to diagnosing anti-starter.
AFTER
REPAIRErase defec ts memorized by the calculator.
Remedy other possible defects.
DEFECT
PR ESENTFAILURE TO MEMORIZE ANTI-STARTER CODE
SUGGESTIONS
14.
Th is defect indicates the failure to memorize the anti-starter code by the injection
calculator or the intentional erasing of this code from the injection calculator.
If need be, refer to diagnosing the anti-starter system.
AFTER REPAIR
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E7J-A-2/60 ENGINE17
IGNITION AND INJECTION
17 - 31
DIAG
NOSING-INTERPRETING THE DEFECTS
DEFECT
PRESENTOR
MEMO RIZEDTHE ATMOSPHERIC PRESSURE CIRCUIT
1. Pressure defect of the intake collector.
Conditions of breakdown detection by the calculator:
-the contact is taken, wait for the dialogue with the calculator to be
lost, then resume the dialogue with the calculator.
-run the engine and maintain it at a rotation ration greater than 600
ro t/min for at least 10 seconds.
Conditions of performing the diagnosing:
-defec t is present
-the defect has been memorized but is recorded in the “present” state.
SU G GESTIO N S
If the defect is only present when the engine runs, check the correctness of the clapper
po sition parameters when the acceleration pedal is free, and when it is fully pressed.
Gently press the acceleration pedal (all the way) and check whether the position of the
clapper is co nstantly increasing.
If it is not so, the information is not correct. Treat the diagnose of the clapper potentiometer.
Check the atmospheric pressure sensor.
Remedy atmospheric pressure sensor if necessary.
Check the correct connecting and the condition of the linking tube between the sensor and
the intake gallery.
Connect the 90-way terminal-tester instead of the calculator and check the insulation, the
co ntinuity and the absence of contact resistance along the circuits:
pin 16 of calculator
♦ pin B of the atmospheric pressure sensor
pin 15 of calculator
♦ pin A of the atmospheric pressure sensor
pin 78 of calculator
♦ pin C of the atmospheric pressure sensor.
Remedy if necessary.
Change the atmospheric pressure sensor if the incident persists.
The proble m is not yet solved! Consequently, the injection calculator must be changed.
CAUTION! The destruction of the calculator has probably been caused by an electric shock.
The cause of the destruction must be found before mounting a new
calcul ator.
15.
Erase defects memorized by the computer.
Perform the steps under “Suggestions” to confirm the repair.
Remedy other possible defects.
AFTER REPA IR
vnx.su

E7J-A-2/60 ENGINE17
IGNITION AND INJECTION
17 - 32
DIAG
NOSING-INTERPRETING THE DEFECTS
DEFECT
PRESENTIDLE MODE ADJUSTMENT CIRCUIT
Faulty idle mode adjustment
S UGGESTIONS
Check the connection and the condition of the engine step-by-step connector for idle
mode ad justment.
Change the connector if necessary.
Check the resistance of the step-by-step engine.
Change it if necessary.
Check the insulation, the continuity and the absence of contact resistance along the
ci rcu its:
pin 12 of calculator ♦ pin B of step-by-step engine
pin 41 of calculator ♦ pi n A of step-by-step engine
pin 42 of calculator ♦ pin C of step-by-step engine
pin 72 of calculator ♦ pi n D of step-by-step engine.
Remedy if necessary.
The problem is not yet solved! Consequently, the injection calculator must be changed.
CAUTION! The destruction of the calculator has probably been caused by an electric shock.
The cause of the destruction must be found before mounting a new
calcul ator.
Erase defects memorized by the computer.
Perform the st e ps under “Suggestions” to confirm the re pa i r.
Remedy other possible de f ects.
AFTER REPAIR
16.
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E7J-A-2/60 ENGINE17
IGNITION AND INJECTION
17 - 33
DIAG
NOSING-INTERPRETING THE DEFECTS
DEFECT
PRESENT OR
MEMO RIZEDCIRCUIT OF CLAPPER POTENTIOMETER
Breakdown of clapper position.
Conditions of breakdown detection by the calculator:
-the contac t is set and kept like that for 10 seconds, without press-
ing the acceleration pedal
-d etermine a slow variation in the position of the clapper potenti-
om eter, by slowly operating the acceleration pedal
-keep the pedal pushed to the end for 10 seconds.
Conditions of performing the diagnosing:
-the defe ct is present
-the de fect has b een memorized bu t is recorded in the “present”
state.
S UGGESTIONS
17.
Check the connection and the condition of the clapper potentiometer.
Change the connector if necessary.
Check the resistance of clapper potentiometer (in case there is a certain defect, its value
will be 0 or “infinite”).
Check that the resistance of the clapper potentiometer is in accordance with its variation
cu rve, in keeping with the evolution of the clapper angle all through its operation range.
Check whether the clapper correctly drives the potentiometer.
Remedy or change the clapper potentiometer if necessary.
Connect the 90-way terminal-tester instead of the calculator and check the insulation, the
co ntinuity and the absence of contact resistance along the circuits:
pin 75 of calculator
♦ pin A of clapper potentiometer
pin 74 of calculator
♦ pin B of clapper potentiometer
pin 73 of calculator
♦ pin C of clapper potentiometer.
Remedy if necessary.
The proble m is not yet solved! Consequently, the injection calculator must be changed.
CAUTION! The destruction of the calculator has probably been caused by an electric shock.
The cause of the destruction must be found before mounting a new
calcul ator.
Er ase defects memorized by the computer.
Perform the steps under “Suggestions” to confirm the repair.
Remedy other possible defects.
AFTER REPAIR
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