2004 DACIA SUPERNOVA wiring

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If further to t he diagnostic, it is necessary the replacement of t he E.C.U. injection, for its
dismountin g, proceed as follows:
- disconnect the battery (the contact being off);
- dismount the screw from the battery attachment clip;
-r emove the battery;
- disconnect the injection computer from the engine wiring;
- dismount the two attachment nuts of the injection computer.
For mounting, perform in the reverse order the dismounting operations.
The i njection c omputer is delivered not coded. It i s necessary the memorising of a n anti
starting code in the computer, after this has been mounted was mounted.
Proceed as follows:
1. Set the contact on, without starting the engine, for a few seconds.
2. Take off the contact; after 10 seconds, the anti starting function is activated, and the anti
starting indicator will blink rarely ( one blink per second).
3. Set the contact on. The anti starting indicator must turn off and the engine can be started.
In order to disconnect the injection computer (E.C.U. injection) act upon the blocking lever
(picture 9, position A) of the connector in the direction of the B arrow, then the connector will be
lifted in the direction of the C arrow. In case the vehicle is bl ocked on the road further to seri ous damages of t he a nti starting
system, the “ Procedure repairing code introduction” may be used, which allows the moving of
the vehicle to the nearest DACIA service center for complete repairing. In order to perform this
procedure it is necessary the CLIP tester and the specific repairing code of that vehicle. ELECTRIC CONTROL UNIT INJECTION REPLACEMENT
A
B
pict. 9
C
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DIAGNOSTIC – FAILURES AND STATES INTERPRETATION
1. FAILURE OF COMUNICATION CLIP TESTER/ E.C.U. DECODER
RECOMMENDATION Check if the lines K and L are not disturbed by another computer of the vehicle.
Check the fuse state F15 (vehicles up to 01.06.2001) or F07 (vehicles after 01.06.2001).
Replace the fuse if necessary.
Check if the CLIP tester is not the cause of the failure; check if the tester communicates with
another computer of the same vehicle (injection computer).
M easure the tension of the vehicle’s battery (U> 10,5V). If necessary, charge the battery.
Check if the E.C.U. decoder is well connected to the vehicle’s wiring.
Check the right supply of the E.C.U. decoder: - presence of t he ground at pin A8 of the E .C.U. decoder
- supply + I.C. at pin A9 of t he E .C.U. decoder
Be sure that the diagnostic socket i s proper supplied, according to the circuit diagram.
Check the continuity and the isolation of the electric wiring on the corresponding pins layout.
E.C.U. decoder A3 7 diagnostic socket
A4 15
If the connection tester CLIP – E.C.U. decoder can’t be established, then replace the decoder.
{ }
After establishing the communication with the tester, fix the
A FTER REPAIRING possible failures.
Perform a conformity checking.
DIAGNOSTIC
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2. 4D STATE: + 12 V (+DC) SUPPLY, EXISTENT.
RECOMMENDATION Observation : - 4D state = ACTIVE when the contact is on “M” position
- 4D state = PASSIVE when the contact is not on “M ”position
AFTER REPAIRING Perform a conformity checking.
Check the operation of the anti starting system.
YES
NO Replace the E.C.U. decoder if it can not be realised
its communication with the tester.
Repair the electric wiring on the supply layout to the pin A7 of E.C.U. decoder.
Check the F03 fuse state.
Replace the fuse if necessary.
Place the contact on “M” position and check the presence of +12V at the pin A7 of the
E.C.U. decoder. Is there +12V?
DIAGNOSTIC
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3. FAILURE : DOORS BLOCKING CONTACTOR
Remove the memorised failure by means of the CLIP tester.
AFTER REPAIRING Perform a conformity checking.
Check the operation of the anti starting system.
Check the isolation related to the ground of the wiring
between the E.C.U. decoder doors’locking switch
B2 pin pole 1
B5 pin pole 3
Is there a correct isolation?
Repair the electric wiring.No
Replace the doors’ locking switch.
Yes
RECOMMENDATION Check if the contactor does not remain permanently pressed due
to a mechanical blocking.
DIAGNOSTIC
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4. FAILURE: MISSING SIGNAL ON TH E CODED LINE E.C.U. DECODER-
C
OMPUTER INJECTION
RECOMMENDATION
Check the continuity and the isolation related to the ground and + 12 V of the wiring between
the E.C.U. decoder PinA6 pin58 i njection computer.
Fix it if necessary.
S et the c ontact on and perform the detection test by the CLIP tester at pi n A 6 of the ECU
decoder.
Are there any impulses?
YES
NO Replace the injection
computer.
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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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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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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