engine DACIA SUPERNOVA 2004 Repair Manual

AIR CONDITIONING
62
62 - 14
Correct AC system
filling.
Compressor does not work.
Ye s
Ye s No Ye s
Check the clutch coil. Damaged,
short-circuit?
Replace the
compressor.Restore the electric circuit
between E and clutch.
Is + 12 V at pol e E 5 of E relay?
Is + 12 V at pole E3 of E relay?
Is + 12 V at pole E3 of E relay?
Check fuse S6 from engine
compartment. Restore the
wiring between S6 and relay E.
No
Restore the wiring between pole
E1 of E relay a nd pole D5 of D
relay.
No
The wiring between injection
computer
and the pole E2 of E re lay is broken ?
Ye s
Repair the wiring.
Ye s
No
Check the pressure
controller electric circuit.
Injection computer does not receive
AC actuation?Yes
Check the switch electric circuit.
Pressure controller is working?
No
Replace the switch.
AC control switch is
working ?No
Ye s
Ye s
Check the pressure controller
electric circuit.
No
Replace the pressure controller.
No
DIAGNOSIS
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BATTERY - FRONT HEADLIGHTS
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BATTERY
CHECKING
It is recommended to check the following: -cr acks or breaches of the battery box (case);
- the battery upper part cleanness;
- the plugs condition.
It is required to strictly check the following: -lack of plugs sulfate composite;
- proceed, is necessary to their cleaning and greasing;
- check the correct wiring plugs tightening at the battery plugs. The existence of an imperfect
contact may generate incidents at engine starting or at battery charging, sparks producing risk
being possible to occur, which may cause the battery explosion;
- check the electrolyte level.
For the batteries provided with access plugs, which may be dismounted, proceed as follows:
-r emove the plugs;
- check the electrolyte level in each element;
-i f n ecessary , refill the level, using only distill ed water, till maximum 1.5 cm above the plates.
AT TENT ION
N ever fill up with electrolyte, but only with distilled wat er.
PRECAUTIONS
It is important to know that: -the battery contains sulfuric acid which is a dangerous substance;
- during battery charging, oxygen and hydrogen are produced. The mixture of these two
gases is forming a detonate gas, which may lead to the explosion risk.
1. DANGER = ACID
The sulfuric acid solution is a very aggressive, toxic and corrosive product. This is a ttacking
the skin, the clothes and may lead to the corrosion of most of the metals. Also, it is very important, that, when you handle a battery , to consider the following precautions:
- protect the eyes by using protective glasses;
- wear anti-acid gloves and clothes. PARTICULARITIES
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BATTERY - FRONT HEADLIGHTS
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AT TENT ION
In case of acid slashes on body, abundantly wash with water al l affected parts.
If eyes have been touched, urgently call for a doctor.
1. DANGER = EXPLOSION RISK
During battery charging, connected to a charger-rectifier, oxygen and hydrogen emissions are
occurring. These gases emission is stronger when the battery has reached the complete charge
condition and the produced gas quantity is in direct connection with the charging current. The oxygen and hydrogen are associating in the free spaces, at the plates surface, forming a
detonate mixture, which is very explosive. The littlest spark is sufficient to generate an explosion,
followed by the battery case brooking and a cid splashing in the proximate environment. The
persons, who are a round, are in da nger t o be hurt by t he e xploded case chips or by the acid,
which may come i n contact with the eyes, hands, or face.
AT TENT ION
Strictly observe the following recommendations:
- before connecting or reconnecting a battery, ensure that all consumers are
shouted off; -during battery charging in a room, using a c harger-rectifier, turn it off be fore
connecting or reconnecting the battery to this one;
-do not place m etallic objects on the battery for not producing a short-circuit
between its plugs;
-never bring closer to a battery, an open flame, a welding lamp or another fire
source.
THE ELECTRIC EQUIPMENT PROTECTION
In case of an intervention on the vehicle, some measures must be taken, for the electric equip-
ment protection against damages or for avoiding a short-circuit that may lead to vehicle firing. The
battery is to be allwith disconnected by first disconnecting the negative plug and then the positive
one. Connection is to be done by performing the disconnecting operations in the reverse order.
Before starter acting, check if the battery is correctly connected (the negative plug connected
to the ground), and if the plugs are clean and well tightened. Never disconnect the battery when
the engine is running, in order not to damage the voltage regulator, the alternator or some
components of the vehicle checking electronic systems. The alternator, voltage re gulator
disconnecting, a nd the interventions at their connections, are to be performed only when the
engine is stopped (the alternator is not turning) and the contact is taken off. In case the battery is connected to a charger-rectifier, for charging (without dismounting the
battery off the vehicle), it is obligatory to disconnect the wiring from the battery plugs. BATTERY
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This type of anti starting syste m is based on the key recognition, which has a special construction.
It may be separated in two elements which can be identified in the following way (pict.1): the key
he ad (pos.A.) made of plastic, which can be dismounted and the metal insertion (pos.B.), which is
fixed an d ensured by clipping in the key head.
In the key head, there is a coded independent electronic circuit, which is functioning without
battery. When setting the contact on, the anti starting bushing, placed around the starting contact,
is enquiring and catching the coded signal emitted by the key head, then sends it to the Electronic
Control Unit (E.C.U.) decoder. This one is attached on the front left pillar, under the lower casing
of the dashboard and has the function of receiving the code sent from the bushing. If the decoder
recognises the key code then it will send a coded signal to the injection computer, which compares
it with the previous memorised code and will authorise or not the start of the engine.
We mention that the system with radio frequency remote control (RF) of the doors blocking
/unlocking, has no influence to the anti starting system. In this case, the key head has a different
construction, having an activation button of the remote control and a red LED, which is lighted in
the moment of blocking/unlocking the doors, by pushing the key button. Inside the key head
there is the coded electronic circuit for the anti starting system and an imprinted electronic circuit,
s upplied by a battery, for t he RF remote control operation of blocking/unlocking the ve hicle
doors.
The anti starting system is activated after approximate 10 seconds from the breaking of the
contact and is visualised by the blinking of the anti starting indicator placed on the instrument
panel.
If the battery is low charged, the t ension drop on the starter, at starting,
may cause the activation of the anti starting system and the start of the engine is
impossible.
pict.1
GENERALITIES
AT T ENTION
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AT TENT ION
After dismounting the key head, it is forbidden to touch the electric circuit located
inside of it, as this can cause the further non-operation of the anti starting system and
impose a replacement of the key head. The key he ad ha s marked i nside, a num ber of identification, form ed by 8 a lphanumeric
characters (letters and figures) and this one is mentioned on the vehicle’s invoice.
If the replacement of t he battery from the key head is necessary, this can be opened in the
following way : -keep the key in horizontal position, the half with the metal insertion being downwards ;
- with a little screwdriver, positioned as in the picture (picture2), act upon the key head in
the direction indicated by the arrow, in order to begin the dismounting.
-move carefully the upper side of the key in the direction indicated by the arrow (picture 3)
and then the two parts of the key will separate.
If the replacement of the metal insertion ( the mechanical part) of the key is needed, proceed as follows:
- open the key head according to t he a.m. procedure ;
- unlock carefully the maintaining claw (picture 4, pos.C) of the metal insertion (B).
-r emove the metal insertion by sliding from the key head.
Introduce by sliding t he new metal i nsertion until a « click » is heard, which confirm s its
attachment on the key head.
pict.2 pict.3
pict.4 GENERALITIES
THE KEY HEADS
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GENERALITIES
The anti starting bushing (picture 5) is located around the starting contact a nd is accessible
after the dismounting the steering wheel’s cases. It catches the signal from the key head and then
s ends a coded signal t o the E .C.U. decoder.
The vehicles equipped with RF remote control keys for blocking/ unlocking t he doors are
provided with another anti starting bushing which transmits to the E.C.U. decoder also the signal
received from the RF remote control.
The recognition of the two types of decoding bushings is realised by means of codes labelled
on their body, as follows :
- code 042264J - for vehicles w ithout RF remote control
- code 8200044257 - for vehicles with RF remote control
The E.C.U. decoder (picture 6) has the
following functions :
- decode the signal received from the anti
starting bushing ;
- sends a c ode to the injection computer
in order to authorise the engine starting.
- controls the anti starting indicator of the
instrument panel - receives the coded signal from the anti
NOTE
In case both keys we re lost, the code of the key head (8 characters) and the code of
the m etal insertion (4 characters) can be red from the vehicle invoice. If al so the i nvoice
was lost, the two mentioned codes can be found out based on the chassis series number
of that vehicle, accessing the database of the DACIA manufacturer, calling the TECH
LINE.
pict.5
pict.6
starting bearings, for the vehicles equipped with RF remote control;
- commands the blocking/unlocking of the doors, if the vehicle is provided with RF remote
control keys;
- commands the dome ceiling lighting, for the vehicles equipped with this system.
E.C.U. DECODER
ANTI STARTING BUSHING
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NOTE :
The vehicles equipped with this anti starting system, have a type of decoder, and those
provided also with RF remote control for locking/ unlocking doors have another type
of decoder.
The identification of the two types of E.C.U. de coder i s realised by the inscriptions on
the labels as fol lows: -code P8200032783H and the inscription TRANS-PLAF for the vehicles without
RF remote control ;
-code P82000 32776H and the inscription TRF-TRANS-CAR for the vehicles
with RF remote control.
ANTI STARTING INDICATOR
It is located on the instrument panel (picture 8, position A) and has the following functions: - signals the activation of the anti starting system
- signals the case of non identifying the key head
- signals the entrance in the operation mode “resynchronisation” of the remote controls,
RF with E.C.U. decoder, for the vehicles which use the RF remote control.
pict.7
pict.8
A
GENERALITIES
The dome ceiling lighting is activated subject to the position of the switch
(picture 7, position 1):
- position A the ceiling lights permanently
- position B the ceiling turned off
- position C dome ceiling lighting; this will light for 5 seconds after a front door closing or
after the command of unlocking the doors with the RF remote control. This delay turns out in the
moment of setting the contact.
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When the contact is off and the anti starting system is activated, without any existing
failure,
the anti starting indicator must blink slowly (a blink per second).
After setting the contact on, the anti starting indicator must light for 3 seconds and then turn off.
If after setting the contact on, the a nti start ing system doesn’t work properly, then the anti
starting indicator will blink rapidly (2 blinks per second). GENERALITIES
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Af
ter ordering a new key head based on the alphanumeric code mentioned on the i nvoice,
dismount the old key head and remove the metal insertion (mechanical part), then introduce the
old metal insertion in the new key head according to t he previously mentioned procedure. In
case the key head is provided with RF remote control for blocking/ unlocking the doors, after its
replacement, perform the synchronising procedure of the RF remote control with the decoder,
subject to the following cases:
(a)- the vehicle has a key with RF remote control and one without RF remote control; in this
case after the replacement of the RF key, perform the “simple synchronised procedure” in order
to bring into phase the RF remote control with the decoder.
( b)- the vehicle has two keys with RF remote control; after the replacement of one RF key,
perform the “specific synchronised procedure”;
(c)- the vehicle has two keys with RF remote control; if both keys are replaced, perform the
“simple s ynchronised procedure for the firs key and the “specific synchronised procedure” for
the second one. If a key was lost, a new key head and a metal insertion will be ordered. KEY HEAD REPLACEMENT
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A
ll the new decoders, are not coded. After t he mounting on the vehicle it is necessary the
memori sation of t he key head code by the decoder i n order to be operational. If only the
decoder is replaced, no intervention is necessary to the injection computer, which will keep the
old anti starting code. When the vehicle is provided with RF remote control for blocking/unlocking
the doors, the performing of the resynchronisation of the keys with the decoder is imposed, after
its mounting.
If further to the diagnostic of the anti starting system, using the CLIP tester, the replacement of
the decoder is imposed, proceed as follows: - disconnect the front wiring connector from the E.C.U. decoder ( the contact being off);
- dismount the attachment screws of the E. C. U. decoder on the front left pillar;
- mount the new E.C.U. decoder;
- connect the front wiring to the new decoder.
Proceed then to the insertion of the anti starting code using the contact key, then to its memorising
(validation) in the E.C.U. decoder, using the CLIP tester. For this purpose, perform the “E.C.U.
decoder re placement procedure and a nti starting c ode memorising”. Che ck then the correct
operation of the anti starting system with both keys. E.C.U. DECODER REPLACEMENT
AT TENT ION
Once the decoder has memorised the key codes, this code cannot be erased
or replaced with another one.
If it is necessary the replacement of the kit (E.C.U. decoder and two key heads), after that
realise t he “ Kit replacement procedure”.
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