Dacia SuperNova (engine E7J). Manual - part 121

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FIXING THE INCIDENT “UNRECOGNIZED  KEY CODE BY

THE E.C.U. DECODER”

For solving the incident “unrecognised anti starting code of the electronic key head by the

E.C.U. decoder”, observe the following instructions regarding solving this incident:

I. DIAGNOSTIC METHOD

When setting the contact on, the anti starting  LED indicator will start to blink rapidly. Try to

start the engine with the second key. If the engine starts, the failure is obvious: the key head of the
firs key is damaged (or it has another anti starting code) and must be replaced.

If the engine doesn’t start, even with the second key, and when setting the contact on, the anti

starting indicator blinks rapidly, connect the CLIP tester to the vehicle, select COMPUTER
TEST- ANTI STARTING- STATE LIST, set the contact  on and check:

Case 1: If  the following states are as follows::

ANTI STARTING…………………………………………………..ACTIVE
RECEIVED KEY CODE…………………………………………...ACTIVE
ACCEPTED KEY CODE…………………………………………PASSIVE

then the E.C.U. decoder from the vehicle has been coded with other electronic key heads and
must be replaced.

Case 2: If  the following states are as follows:

ANTI STARTING  …………………………………………………ACTIVE
RECEIVED KEY CODE ………………………………………… PASSIVE
ACCEPTED KEY CODE …………………………………………PASSIVE

 repeat checking with another electronic key head (operating on a third party vehicle) mounted in
the metal insertion of the original key.

If the states changes, like in case 1, the reading system of the anti starting code from the

decoding bushing is functioning, so the key heads of the vehicle are damaged and must be replaced.

DIAGNOSTIC

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If the states remain unchanged,  check the following:

- electric connections of the decoding bushing
- the electric connections between the E.C.U. decoder and the decoding bushing
- the tension of the battery must have more than 8V when the starter is activated.

If all these are conformable, proceed to the replacement of the decoding bushing, and then

check again the a.m. states.

II. SOLVING MODE

When an electric key head (or both) is damaged, order (Info TECH LINE 0248/213766) a

new set of two electronic heads, subject to the vehicle type, as follows:

TRF key head set

– item no. 6001 543 684, 1 set, for DSN equipped with

                                               anti intrusion   (CLIMA or RAPSODIE)

TR-TRF key head set – item no. 6001 544 452, 1 set, for DSN without anti

                                               intrusion (CLIMA or RAPSODIE)

TR key head set

– item no. 6001 543 683, 1 set, for DSN  EUROPA

Send to Tech Line (0248 213766), the chassis series no,  the anti starting code of  the damaged

key heads, the anti starting code of the new key heads, and they will sent at their turn, to the
service center, the repairing code (taking into account that this code has a special regime).

Additionally, there are necessary the new key heads, the  E.C.U. decoder (obligatory TRF, if

the vehicle is equipped with central locking), the repairing code of the computer; proceed then to
the replacement of these items performing the  following operation:

A) Replacement- checking electronic key heads:
Replace the damaged key heads with the new ones (the metal insertions remain the same),

then by means of the CLIP tester, selecting COMPUTER TEST- ANTI STARTING- STATE
LIST, check following states with both keys:

If the states are in the following configuration, when setting the contact on, consecutively with

both keys:

ANTI STARTING……………………………………………..........ACTIVE
RECEIVED KEY CODE………………………………………….. ACTIVE
ACCEPTED KEY CODE…………………………………………PASSIVE

DIAGNOSTIC

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then the new electronic key heads are functioning and pass to the next step. If the states are as
follows, with one of the key, then both keys must  be again replaced:

ANTI STARTING…………………………………………………..ACTIVE
RECEIVED KEY CODE………………………………………… PASSIVE
ACCEPTED KEY CODE…………………………………………PASSIVE

B) Replacement – checking of the E.C.U. decoder:
Proceed at the replacement of the vehicle  E.C.U. decoder with the new one, then check by

means of the CLIP tester (with the contact taken off), selecting COMPUTER TEST- ANTI
STARTING- STATE LIST, the following states:

FIRST CYCLE MEMORISING………………………………….. PASSIVE
NOT PERFORMED KEY PROGRAMMING……………………..ACTIVE
UNLOCKED KEY PROGRAMMING………………………..…...ACTIVE

If one of the states  NOT PERFORMED KEY PROGRAMMING or UNLOCKED

KEY PROGRAMMING is not ACTIVE, then the E.C.U. decoder was used before and
must be replaced.

C) E.C.U. decoder coding:

Further on, perform the following operations:

- with the contact taken off, in  COMPUTER TEST- ANTI STARTING- STATE LIST,

launch the command FINISHED CALIBRATION.

- set the contact on for a few seconds, the anti starting LED indicator blinks rapidly;
- take the contact off and validate the command FINISHED CALIBRATION (by the

blue button from the right side of the screen), in this moment the E.C.U. decoder is coded.

- check  in the STATE LIST the following states which obligatory must be:

FIRS CYCLE MEMORISING…………………………………......ACTIVE
NOT PERFORMED KEY PROGRAMMING…………………… PASSIVE
UNLOCKED KEY PROGRAMMING……………………………PASSIVE

DIAGNOSTIC

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D) Memorising of the new code of  the injection computer
- in ACTUATORS launch the command MANUAL INTRODUCTION CODE; type

the repairing code of the old key kit, then validate it with the key  ENTER.

- the message “COMMAND IN PROGRESS” will be displayed followed by the message

“FINISHED COMMAND”.

- set the contact on; the anti starting LED indicator will start blinking, then take off the

contact;

- set the contact on for 10 seconds ; take off the contact;
- check if the engine starts with the two keys.

If the engine doesn’t start, repeat this operation (point D).

E) Key resynchronisation (remote controls)
-if the vehicle is equipped with only one remote control, its resynchronisation will be

performed as follows (simple resynchronisation);

- with the contact taken off, push continuously on the central locking button from the

dashboard, up to the moment the anti starting LED indicator remains lighted (the doors actuators
are performing a closing/opening course.) From this moment, the operator has 10 seconds to
perform the next operation;

- push twice on the remote control (the doors actuators are performing a closing/opening

course.) and the anti starting LED indicator turns off;

- if the vehicle is equipped with two remotes controls, perform the simple resynchronisation

procedure for the first key and a specific resynchronisation procedure for the second key, with
the CLIP tester as  follows:

-  in  COMPUTER TEST select ANTISTARTING with the contact taken  off, then

COMMAND MODE, CONFIGURATION; launch the command PROGRAMMING OF
THE SECOND TIR/TIE KEY and validate (the doors actuators are performing a closing/
opening course.). Then within 10 seconds, push twice on the remote control (the doors actuators
are performing a closing/opening course).

DIAGNOSTIC