check engine DACIA SUPERNOVA 2004 Repair Manual

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5. FAILURE : DEFECTIVE COMUNICATION ANTI STARTING SYSTEM - E.C.U.
DECODER
RECOMMENDATION -
Check the continuity and the isolation
related to the ground and + 12 V voltage of the wiring
between the anti starting system pin 4 pin A2 E.C.U. decoder
Fix it if necessary.
Check the anti starting bushing supply : + 12V to the pin 3 and the ground to pin2.
Di sconnect the E.C.U. decoder and measure the presence of +12 V to the pin A2 of the
decoder, the contact being taken off. If there it isn’t +12 V, check the fuse state F15 (vehicles
up to 01.06.2001) or F07 fuse (vehicles after 01.06.2001).
If the problem persists, replace the anti starting bushing.
Set the contact on and perform the impulse detection test at the pin A2 of the E.C.U. decoder.
Is there an impulse ?
YES
NO Replace the anti starting bushing.
Replace the E .C.U. decoder.
Remove the memorised failure by means of the CLIP tester.
AFTER REPAIRING Perform a conformity checking.
Check the operation of the anti starting system.
DIAGNOSTIC
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6. STATE 11G: ACTIVATE THE RF REMOTE CONTROL/ RECEIVED RF SIGNAL
INDICATION
If the 17D state is PASSIVE, do not apply the next diagnostic
because the E .C.U. decoder is unused (new).
RECOMMENDATION Perform first the remote control synchronisation Do not access the next diagnostic if the state 11G remains PASSIVE
when activating the RF remote control at the blocking and unlocking
of the doors.
Check the blocking and unlocking of the doors using the second RF remote control. If this
is one is operating, then the battery of the first RF remote control should be replaced.
Check the presence of +12 V(+DC) at the pin1 of the anti starting bushing.
Is there +12V ?
Perform using CLIP tester, the impulse detection test a t the pin 1 of the anti
starting bushing, when using the RF remote control.
Are any impulses when using the remote control ?
YES Replace the E .C.U. decoder.
NO Replace the anti starting bushing.YES
Check the isolation related to the ground of the electric wiring between:
E.C.U. decoder Pin B1 pole 1 anti starting bushing Pin B2 pole door locking switch
Pin B5 pole 3
Is the isolation related to the ground good?
YES Fix the electric wiring.
NO Replace the E .C.U. decoder.NO
AFTER REPAIRING Perform a conformity checking.
Check the operation of the anti starting system.
DIAGNOSTIC
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7. 11 STATE: OPERATE THE RF REMOTE CONTROL / GOOD RF SIGNAL
INDICATION
Do not access the following diagnostic
unless the state 11D
RECOMMENDATION becomes ACTIVE when operating the RF remote control. Check if the keys belong to the vehicle in question.
There is a desynchronising between the code of the RF remote control and the E.C.U. decoder
if at the activation of the remote control, the 111D state remains PASSIVE and the state 11G
becomes AC TIVE for 3 seconds, then becomes PASSIVE. The blocking / unlocking of the
do ors is not possible in this case.
Apply the corresponding procedure of resynchronisation (for one or two keys).
AFTER REPAIRING Perform a conformity checking.
Check the operation of the anti starting system.
DIAGNOSTIC
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8. 14G STATE : BLOCKING/ UNLOCKING DOORS
RECOMMENDATION The state 10G (anti starting) must be ACTIVE.
Check the continuity and the isolation related to the +12 V and to the ground of the electric
wiring on the line
E.C.U. decoder Pin B2 pole 1 door locking switch. Pin B5 pole 3
Fix the electric wiring if necessary or replace the switch.
If the incident persists, replace the E.C.U. decoder.
Remove the memorised failure by means of the CLIP tester.
AFTER REPAIRING Perform a conformity checking.
Check the operation of the anti starting system.
DIAGNOSTIC
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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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