key RENAULT TWINGO RS 2009 2.G Electrical Equipment - Access Safety Workshop Manual

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ACCESS/SAFETY
Fault finding - Role of components
The system comprises the following components, according to whether or not it features the deadlocking function:
Electric central door locking:
Electric central door locking is operated using the locking button.
Tailgate lock: The electric tailgate lock is also used to open the tailgate. The tailgate locking and unlocking
function is controlled by the UCH.
Transponder and radiofrequency key:
–The transponder in the key enables the following signals to be sent to the UCH:
–Key identifier signal.
–Immobiliser code signal.
–The key radiofrequency (for top of the range vehicles) enables the key identifier to be transmitted
when the button is pressed. A radiofrequency wave is sent to the UCH to perform the user's request if the
key is allocated to the vehicle (opening the doors and the tailgate).
One touch window/anti-pinch module:
–One-touch window: the window is raised by pulling the button up and it is lowered by pressing down on
the button; pressing the button again has no effect on the initial operation.
–Anti-pinch: if an object prevents the window from closing, the anti-pinch function triggers the window to
be lowered by 50 mm. Access - ProtectionWithout
deadlocking activation/
deactivationWith deadlocking
activation/deactivation
Transponder keyX
Transponder and radiofrequency keyX
Locking and unlocking using locking buttonX
Tailgate electric lockXX
Tailgate opening switchXX
Tailgate locking switch (with key)X
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ACCESS/SAFETY
Fault finding - Function
Access/Safety function layout
Access (RF*) and protection (immobiliser) middle and top of the range vehicles:
The access function (locking/unlocking) is provided by the UCH and the key.
Exchanges between the key and the UCH are carried by radio frequency transmission at 433 MHz.
When the switch is pressed, the key sends out a radiofrequency wave signal. The UCH receives the signal via its
built-in aerial.
The UCH authenticates the key and performs the user request if the key is allocated to the vehicle.
Access via radiofrequency:
PROTECTION (Immobiliser)
*RF: Radio frequency
Key
UCH
–Authentication of the key
–Door locking system
Radio frequency
signals
Magnetic field used as communication
medium between the key transponder and
the transponder aerial
Key +
transponderTransponder aerial
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Fault finding - Function82D
The immobiliser function is divided between three coded computers (UCH, injection and the key). The key and the
UCH are linked by a magnetic field created by the transponder aerial. The UCH and the injection system are linked
by the multiplex network.
When the + After ignition is switched on, the key sends its identifier to the UCH via the transponder aerial located on
the ignition switch. The UCH goes through an authentication procedure with the key via the transponder aerial. If the
key is allocated to the vehicle, the starter command is authorised.
The UCH then carries out a coded exchange with the injection computer.
When the authentication messages with the UCH have been exchanged, the injection can be unlocked and
authorise the starting of the engine injection.
The injection is unlocked and engine starting authorised as soon as the UCH has authenticated the injection
computer.
KeyUCH
signals–Authentication of the key
–immobiliser authentication of
injection system and thus
authorisation of starter activation.
Transponder aerial
(Key identification)Serial
connection
Injection computer
–UCH immobiliser authentication
–engine injection authorisation
Multiplex connections
Wire connections

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Fault finding - Function82D
The ACCESS/SAFETY function is divided into three sub-functions: Access, Protection and Starting.
1. Access
a) Locking/unlocking by the user
The UCH receives the request from the user via the key.
When the key has been authenticated, the UCH executes the user's request (locking, unlocking, etc.).
Locking is indicated by 2 flashes of the direction indicators.
The direction indicators flash once when unlocking takes place (idem when unlocking the tailgate).
The maximum number of keys allocated to one vehicle is 4.
b) Electric Central Door Locking Button
This button enables the vehicle to be locked or unlocked and has no effect if the vehicle has been locked from the
outside.
Pressing the radiofrequency electric central door locking button when a door is unlocked will lock all the doors and
the electric central door locking indicator light will come on.
c) Deadlocking
To have this function, it is necessary to have a top of the range UCH on a right-hand drive vehicle, and configuration
LC003 Deadlocking must be WITH (see Configuration and programming).
This function is activated by pressing the locking button on the key and holding it down for more than 2 seconds.
This function enables the interior and exterior door opening control to be deactivated.
It is impossible to deadlock the vehicle if the + accessories feed is active, if the lights are switched on or if the hazard
warning lights are activated.
The following statuses can be viewed:
–ET044 Electric central door locking button
–ET061 Tailgate unlocking request
–ET463 "Door(s) or tailgate"
–ET061 Tailgate unlocking request
–ET186 Door locking button short press
–ET189 Door unlocking button press
Exchanges between access function components
Keykey identifier information + switch N˚ pressed
UCH
Press on "locking" or "unlocking"

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Fault finding - Function82D
2. Protection
PROCESS FOR REMOVING VEHICLE PROTECTION
When the + after ignition is switched on, the key and the UCH communicate via the transponder aerial and the key
code is sent to the UCH.
By means of an exchange of codes, the UCH checks that the key belongs to the vehicle.
When the key has been identified, the UCH and the injection identify each other by an exchange of codes via the
multiplex system.
If the UCH and the injection computer authenticate each other, the UCH authorises the engine to start and the
injection is unlocked.
The immobiliser statuses can be viewed using the following statuses:
–ET046 Immobiliser
–ET008 Blank UCH
–ET185 Key Code received
–ET181 Key allocated to vehicle
–ET045 RF signal received
–ET193 RF signal from a key allocated to the vehicle
–ET240 Key frequency (MHz)
–PR056 Number of keys allocated
–ET229 Injection immobiliser code
–ET250 Injection code
–ET239 Ignition switch position
Special cases
If the key code and the UCH code do not match, the system remains locked. The vehicle cannot be started.
Exchanges between protection function components
Note:
–The UCH authorises the operation of the starter.
–The injection system authorises the operation of the injectors.–key identifier request
–immobiliser code request
KeyUCH
Transponder ring
–key identifier signal
–immobiliser code signal
–UCH authentication request
–injection authorisation
UCHInjection
–UCH authentication signal
–starter supply authorisation

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Fault finding - Function82D
3. Starting
The UCH controls the command and supply part of the start-up function while the start-up-charging process is
controlled by the UCH. For this function to operate normally, the protection function must have been successfully
completed.
To enable the starting command the UCH needs information about the following statuses and parameters:
–ET142 Engine operating phase
–ET239 Ignition switch position
–PR025 "Engine speed"
*Powerlatch: Time required for injection computer supply after + 12 V APC cut-off to the ignition switch.
Extended memory key:
In this case, the UCH sends data to the key at specific times to provide the key with up-to-date application data when
the + after ignition feed is cut off.
The following information can be retrieved on the multiplex line:
–The vehicle identification number.
–If entered by customer services: the customer's contact details.
–The total vehicle mileage.
–The fuel level.
–The mileage before oil service.
The UCH sends this information to the key under the following conditions:
–Every time the vehicle is started.
–Every time the vehicle speed drops below 3 mph (5 km/h) and if 1 mile (2 km) have been travelled since the last
record. IMPORTANT
When the vehicle battery has a low charge, the drop in voltage caused by operating the starter could reactivate
the immobiliser. If the voltage is too low, the engine cannot be started, even by pushing the vehicle.
Note:
If several, i.e. three or four, attempts have been made using a key not allocated to the vehicle, the injection
computer locks. Insert a key allocated to the vehicle for 20 seconds in + after ignition feed, then switch off the
ignition and wait for the end of "powerlatch*" (20 minutes) to allow the injection computer to unlock.

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ACCESS/SAFETY
Fault finding - Configurations and programming
Replacing the computer
After the injection computer or UCH has been replaced, program the immobiliser code into the new computer
(see 87B, Passenger compartment connection unit, Configuration and programming).
Access/Safety function configurations in the UCH
–Individual configuration available using the diagnostic tool, and the associated configuration should be read
Procedure to follow for modifying these configurations
–establish dialogue with the computer corresponding to the desired configuration.
–select the "repair mode" menu,
–select the "enter configuration" menu,
–select the line corresponding to the configuration to be modified,
–in the drop-down menu, select the line corresponding to the vehicle equipment level or to the customer selection
and click on "confirm",
–In the "Read configuration" menu, check that the configuration has been completed.
SR.*: Sunroof
*RF: radio frequencyEquipment required
Diagnostic toolClip
ConfigurationConfiguration
readingName of configuration Option
CF009 LC003Deadlocking WITH/WITHOUT
-LC089Memory key function WITH/WITHOUT
CF108 LC040 "Renault Anti-Intruder Device"WITH/WITHOUT
CF009 LC003 "Deadlocking"WITH/WITHOUT
CF192 LC093 "Central door locking"WITH/WITHOUT
CF195 LC097 "Type of key" STANDARD/RF*
CF229 LC126 "Alarm"WITH/WITHOUT
CF031 - "Calibration"-
CF173 LC070 "One-touch window(s)/SR*"WITH/WITHOUT
Note:
If configuration LC089 "Memory key function" is WITH and if status ET407 "Memory key" is YES, the UCH
allows the vehicle information stored in the key to be used.
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ACCESS/SAFETY
Fault finding - Conformity check
SUB-FUNCTION: ACCESS
SR.*: Sunroof
NOTESOnly carry out this conformity check after a complete check with the diagnostic tool
(fault reading and configuration checks).
Application condition: engine stopped, + after ignition feed present.
Computer Order FunctionParameter or Status
checked or ActionDisplay and Notes Fault finding
UCH (see 87B,
Passenger
compartment
connection unit)1
TailgateET061:Open tailgate
requestPRESENT
ABSENTIn the event of a fault,
apply the
interpretation of
status ET061
(see 87B, UCH).
2ET463:Door(s) or
tailgateOPEN
CLOSEDIn the event of a fault,
apply the
interpretation of
status ET463
(see 87B, UCH).
3
Locking/unlocking
buttonET186:Short press on
door closing
buttonSignal can be
interpreted if the
ignition is
switched off (key
removed from the
ignition switch).
ACTIVE
INACTIVEIn the event of a fault,
refer to the
interpretation of
status ET186
(see 87B, UCH).
4ET189:Long press on
door opening
buttonSignal can be
interpreted if the
ignition is
switched off (key
removed from the
ignition switch).
ACTIVE
INACTIVEIn the event of a fault,
refer to the
interpretation of
status ET189
(see 87B, UCH).
5Electric central
locking buttonET044:Central
Locking buttonPRESSED
RELEASEDIn the event of a fault,
refer to the
interpretation of
status ET044
(see 87B, UCH).
6One-touch window/
SR*ET087:One-touch
window/SR*
authorisationPRESENT
ABSENTIn the event of a fault,
apply the
interpretation of
status ET087
(see 87B, UCH).
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Fault finding - Conformity check82D
SUB-FUNCTION: PROTECTION
NOTESOnly carry out this conformity check after a complete check with the diagnostic tool
(fault reading and configuration checks).
Application condition: engine stopped, + after ignition feed present.
Computer Order FunctionParameter or Status
checked or ActionDisplay and Notes Fault finding
UCH (see 87B,
Passenger
compartment
connection unit)1
Engine
immobiliserET046:Engine
immobiliserINACTIVE = Vehicle
unprotected, ready
to start.
ACTIVE = Vehicle
protected, starting
impossible.In the event of a
fault, refer to the
interpretation of
status ET046
(see 87B,
Passenger
compartment
connection unit).
2ET008:blank UCHYES = If the UCH
is blank.
NO = if the UCH has
been programmed
with an immobiliser
code.In the event of a
fault, refer to the
interpretation of
status ET008
(see 87B,
Passenger
compartment
connection unit).
3
KeyET185:Key code
receivedYES = If the UCH has
received the
immobiliser code
from the key.
NO = If the UCH does
not receive the
immobiliser code
from the key.In the event of a
fault, refer to the
interpretation of
status ET185
(see 87B,
Passenger
compartment
connection unit).
4ET181:Key allocated to
the vehicleYES = The key is
allocated to the
vehicle.
NO = The key is not
allocated to the
vehicle.In the event of a
fault, refer to the
interpretation of
status ET181
(see 87B,
Passenger
compartment
connection unit).

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Fault finding - Conformity check82D
SUB-FUNCTION: PROTECTION (CONTINUED 1)
NOTESOnly carry out this conformity check after a complete check with the diagnostic tool
(fault reading and configuration checks).
Application condition: engine stopped, + after ignition feed present.
Computer Order FunctionParameter or Status
checked or ActionDisplay and
NotesFault finding
UCH (see 87B,
Passenger
compartment
connection unit)5
KeyET045:Radiofrequency
signal receivedYES = When the
UCH receives a
radiofrequency
signal.
NO = When the
UCH does not
receive a
Radiofrequency
signal.In the event of a fault,
refer to the
interpretation of
status ET045
(see 87B, Passenger
compartment
connection unit).
6ET193:Radiofrequency
signal from a key
allocated to the
vehiclePRESENT =
Reception of a
radiofrequency
signal from a key
allocated to the
vehicle.
ABSENT = No
reception of
frequency signal or
reception of
frequency signal
from a key not
allocated to the
vehicle.In the event of a fault,
refer to the
interpretation of
status ET193
(see 87B, Passenger
compartment
connection unit).
7ET240:Key frequency
(in MHz)433
NONEIf "NONE", check that
there is a
radiofrequency key by
trying with another key
(see 87B, Passenger
compartment
connection unit).
8PR056:Number of keys
allocatedX key(s)In the event of a fault,
refer to the
interpretation of
PR056 (see 87B,
Passenger
compartment
connection unit).