Dacia SuperNova (engine E7J). Service manual — part 123
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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.
Disconnect 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 at 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 ACTIVE for 3 seconds, then becomes PASSIVE. The blocking / unlocking of the
doors 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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