2004 DACIA SUPERNOVA check engine

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FA
ILURES LOCATING BASED ON CLIENT CLAIM
(algorithm for damage locating)
A LP1. MISSING COMMUNICATION CLIP TESTER / E.C.U DECODER
RECOMMENDATION Check if the lines K and L are not perturbed by another computer
of the vehicle.
Check the situation of the F15 fuse ( up to 01.06.2001) or F7 (after 01.06.2001)
Replace it if necessary.
Be sure the CLIP t ester is not the cause of t he failure, by trying the communication with
another computer of the vehicle.
Check the tension of the battery (U>10,5V). If it is necessary, charge the battery.
Check the correct c onnection of the E.C.U. decoder to the wiring.
Check the supply of the E.C.U. decoder : - ground at pin A8 - supply (+IC) at pin A9
Be sure that the diagnostic socket is correctly supplied.
Check the continuity and the isolation of the electric wiring on the pins’ line corresponding to:
E.C.U. decoder A3 7 diagnostic socket
A4 15
If the dialogue CLIP tester – E.C.U. decoder cannot be established, then replace the decoder.
When the communication with the tester is established, solve
AFTER REPAIRING the failures displayed by CLIP.
Perform a conformity checking.
DIAGNOSTIC
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A
LP2. CONTACT SET ON. THE ANTI STARTING INDICATOR BLINKS.
(THE ENGINE DOES NOT STARTS)
RECOMMENDATION -
S et the contact on.
Connect the CLIP tester.
Is ther e any communication with the E.C.U. decoder ?
See ALP 1.
Check the fuse F15 ( up to 01.06.2001) or
F07 ( after 01.06.200 1) for anti starting
bushing supply.
Is it good?
Replace the fuse.
Set the c ontact on and check if the state 4D
becomes ACTIVE ?
Is the state 19 D PASSIVE ?
Perform « Procedure repla cement
E. C.U. decoder and memorising anti
starting code » if the starter is new ;
if it’s not new, replace it.
Cut out the contact. The anti starting indicator
will start to blink after 10 seconds.(ACTIVE
anti starting ).
S et again t he c ontact a nd check: t he fa ilure
« D efectiv e communication decoder bushing ».
Does exist such a failure ?
Study « DEFECTIVE
COMMUNICATION
BUSHING – DECODER » from
the chapter DIAGNOSTIC
Study « STA TE 4D : SUPPLY +12 V »
from the ch apter DIAGNOSTIC.
Try the engine start with the second key.
Does t he engine start ?Replace the first key.Yes
Yes
Yes
Yes
Yes
Yes
No No
No
No
No
No DIAGNOSTIC
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No
Is the anti startin
g bus hings correctly fixed on the
steering column and is it correctly connected?Position the bushing and fix its
connection.
Check the continuity and the isolation
related to the ground and the +12 V wiring.Pin2 ground
Pin3 supply +IC
Pin4 pin A2 of the E.C.U. decoder.
Is the wiring in good condition?
Fix the electric wiring.
Disconnect the E.C.U. decoder and check the
presence of +12 V at pin A2 of the wiring.
Is there any tension?
Replace the anti starting bushing.
Connect t he E.C.U. decoder. Perform the
impulse detection t est with t he t ester CLIP
branched to the pin A2 of the E.C.U. decoder.
S et the contact on and check t he presence of
an impulse. Is there any impulse?
Replace the anti starting bushing.
Replace the key.
No
No
No
No
Yes
Yes
Yes
No DIAGNOSTIC
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ALP3. THE ANTI STARTING INDICATOR REMAINS PERMANENTLY LIGHTED
(even when the contact is taken off) OR IT REMAINS PERMANENTLY SWITCHE D OFF.
RECOMMENDATIONCheck if the “Procedure E.C.U. decoder replacement” was correctly
performed.
Check the fuse F15 ( up to 01.06.2001) or
F07 (after 01.06.2001).
Is the fuse good?
Is there the failure “ DOORS’ LOCKING
CONTACT”?
Check the continuity and the isolation related
to the ground, between t he pin A 5 of the
E.C.U. decoder and the dashboard.
Is the wiring good?
Replace the fuse.
Analyse this failure and replace.
Fix the wiring.
Perform the following tests in order to find the
failure element:
- if the anti starting indicator is permanently
lighted, disconnect the connector of the E.C.U.
decoder and check if the indicator switches off;
- if the anti starting system is turned off,
c onnect the pin A5 of the wiring connector from
the E.C.U. decoder to an electric ground and
check if the indicator turns on.
Are the answers affirmatives?
Replace the instrument panel.
Replace the E .C.U. decoder.
Perform a conformity checking.
AFTER REPAIRING Check the operation of the anti starting system. Remove by means of the CLIP tester the possibl e memorised failures.
No
No
No
Yes
Yes
No
Yes
YesDIAGNOSTIC
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AL P4 . CONTA CT ON. T HE AN T I START I NG I NDI CAT OR B L INKS
QUICKLY (the engine doesn’t start)
RECOMMENDATION -
Set the contact on.
Connect the CLIP tester.
Is
there any communication between the tester
and E. C.U. decoder ?
Is the state 19D is ACTIVE?
Check the continuity and the isolation related
to the ground and to t he + 12V of the wiring
be t we en A6 de c ode r pi n a nd i nj e c t ion
computer pin 58.
Is the wiring good?
S ee ALP 1.
Check the correct m emorisation of
the anti starting code by the E.C.U.
decoder ; if not, replace the decoder.
Fix the electric wiring.
Perform the impulse detection test by means
of the CLIP tester connected to the E.C.U.
decoder A6 pin.
Set th e conta c t on a nd c he ck i mpulse s
presence.
Are there any impulses?
Replace the injection computer.
Replace E.C.U. decoder or see t he “ Kit
replacement procedure “.
Perform a conformity checking.
AFTER REPAIRING Check the operation of the anti starting system. Remove by means of the CLIP tester the possible memorised failures.
No
Yes
No
Yes
Yes
No
Yes
NoDIAGNOSTIC
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A
LP5. THE VEHICLE DOES NOT START
RECOMMENDATION -
Is there the failure “SIGNAL MISSING ON
THE CODED LINE E.C.U. DECODER –
COMPUTER INJECTION?”
There is a problem at the shock sensor.
There is an engine problem.No
Yes
Perform a conformity checking.
AFTER REPAIRING Check the operation of the anti starting system.
Remove by means of the CLIP tester the possible memorised failures.
DIAGNOSTIC
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A
LP6. BLOCKING/UNLOCKING DOORS NOT OPERATING
RECOMMENDATION Check with the CLIP tester the absence of the failures.
If there are memorised failures, these must be removed.
Are the doors blocking mechanisms correctly
operating ?Repair the damaged mechanisms.No
Check the continuity a nd the isolation related to the ground
of the wiring between :
E.C.U . d ecoder pin B8 actuators
Pin B9 doors
Is the wiring in good condition?
Fix the wiring.No
Check the continuity a nd the isolation related
to the ground of the wiring between
E.C.U .pin B8 switch
d ecoder pin B9 blocking doors
Is the wiring in good condition?
Repair.
Di sconnect the E.C.U. decoder, then supply
the wiring connector with +12 V at pin B9 and
the ground at the pin B8, than versa (+ 12 V at
pin B8 and the ground at pin B9).
Ar e the actuators bl ocking/unlocking the
doors?
Damaged actuators.
Replace them.
Replace the E.C.U. decoder, then perform the “E.C.U. decoder replacement
procedure”. No
Yes
Yes
No
YesYes
AFTER REPAIRING Perform a conformity
checking.
Check the operation of the anti starting system.
DIAGNOSTIC
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A
LP7. UNLOCKING DOORS NOT OPERATING BY RF REMOTE CONTROL
RECOMMENDATION Check the absence of failures with the CLIP tester.
If there are memorised failures, these must be repaired.
Are the states 11G and 11D ACTIVE when
the RF remote control is activated?S ee the treatment states 11G and
1 1D cf. Chapter “Diagnostic”.No
Check the fuse F15 ( up to 01.06.2001) or
F 07 (after 01.06.2001).
Is it good?
Replace the fuse.No
Yes
Yes
Activate the doors’ locking switch from t he
dashboard.
Are the doors blocking/ unlocking ? S
ee the treatment of the failure
“Doors blocking contact” and the
state 14 G cf. Chapter “Diagnostic”.
S ee ALP 6.
Yes
No
AFTER REPAIRING Perform a conformity checking.
Check the operation of the anti starting system.
DIAGNOSTIC
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