Main components of the ACCESS sub-function:

– Renault card, – UCH,

– optical presence sensors located in the door handles,

– access aerials integrated in the door handles and the tailgate, – the locking switches incorporated in the door handles,

– the boot-only opening/locking switch built into the boot badge, – opening element locking motors.

1.4.1.1 The Renault card:

The Renault card has three buttons which allow:

– locking of the vehicle, – unlocking of the vehicle, – the boot to be locked/unlocked.

The Renault hands-free card allows hands-free operation if it is located in the access and starting zones.

The Renault card is powered by a 3 V battery. This battery is required for operation in hands-free mode or remote control mode (card button presses).

If the battery is old or in an area of frequency interference, the emergency insert located in the Renault card allows the driver's door to be unlocked.

PASSENGER COMPARTMENT CONNECTION UNIT

Fault finding - System operation 87B

87B-29

PASSENGER COMPARTMENT CONNECTION UNIT

Fault finding - System operation 87B

87B-29

V9

MR-372-J84-87B000$086.mif

UCH Vdiag No.: 44, 48,

4C, 4D, 4F, 50

1.4.1.2 The UCH:

1.4.1.3 The optical presence sensors built into the door handles (hands-free vehicles):

The optical presence sensors inform the UCH of the hands-free unlocking request for the entire vehicle when the infrared beam is cut in one of the handles (by a hand).

This presence detection starts the hands-free access procedure.

To limit battery use, the optical sensors are powered at 12 V only for 72 hours after the last change of vehicle locked-unlocked status. After this period, the handle must be pulled to operate a switch* which "wakes up" the UCH to resupply the optical sensors. In this case, pull the handle a second time to open the door once the card has been authenticated.

The switch signal* is parallel to the optical sensor signal: activation of the optical sensor or the switch* earths the signal going to the UCH. Although it is a switch*, the signal is not constant when pulling and holding the handle.

switch*: Switch.

a) In hands-free mode, the UCH receives the unlocking request through the optical sensors, and the locking request through the locking switches.

b) The UCH manages the exchanges with the Renault card.

In hands-free mode:

The UCH interrogates and authenticates the Renault card via the access aerials located in the door handles and the tailgate, at a frequency of 125 KHz.

After authentication from the UCH, the Renault card responds directly to it at 433 MHz.

Outside hands-free mode:

The UCH receives the access requests coming from card presses at 433 MHz (315 MHz in Japan).

The 433 MHz reception aerial is incorporated in the UCH (except Scénic II fitted with the SSPP function).

The signals are encrypted.

c) The UCH activates the locking motors.

If the exchanges between the Renault card and the UCH are correct, the UCH activates the locking motors.

Fault finding - System operation 87B

Fault finding - System operation 87B

Vdiag No.: 44, 48, 4C, 4D, 4F, 50

The handle groups are shown in the diagram below:

Communal sensor supply

Note:

The tailgate is not fitted with an infrared optical sensor. The boot and rear screen opening switches notify the UCH of a request to open the boot or rear screen.

Optical sensor

+ Switch

Driver's side Passenger side

Optical sensor

+ Switch

Optical sensor

+ Switch

Optical sensor

+ Switch

Boot unlocking

PASSENGER COMPARTMENT CONNECTION UNIT

Fault finding - System operation 87B

87B-31

PASSENGER COMPARTMENT CONNECTION UNIT

Fault finding - System operation 87B

87B-31

V9

MR-372-J84-87B000$086.mif

UCH Vdiag No.: 44, 48,

4C, 4D, 4F, 50

1.4.1.4 The access aerials built into the door handles and tailgate (hands-free vehicles):

The access aerials are built into the door handles and the tailgate. Only the boot aerial is removable.

The UCH activates these aerials in the following order:

– the side on which the handle has been pulled,

– if the card has not been detected, the UCH activates the aerials on the opposite side, – if the card is still not detected, the UCH interrogates the rear aerial.

The access aerial groups are shown in the diagram below:

Note:

5-door versions manufactured before January 2007 and 3-door versions differ in that they have different handle access aerials.

Note:

5-door versions manufactured after January 2007 have no access aerials in the rear door handles and have access aerials in the front door handles identical to those in 3-door versions.

Driver's side Passenger side

Tailgate

Fault finding - System operation 87B

Fault finding - System operation 87B

Vdiag No.: 44, 48, 4C, 4D, 4F, 50

1.4.1.5 The locking switches built into the door handles and the tailgate badge (hands-free vehicles):

These switches are used to lock the opening elements. They are not removable, except for the tailgate switch which is separate from the badge. When a switch is pressed, a UCH track is connected to earth, informing it of a vehicle locking request. The access aerials are then activated.

The grouping of these switches is shown in the diagram below:

Driver's side Passenger side

Locking switch Locking switch

Locking switch Locking switch

Boot lid switch

PASSENGER COMPARTMENT CONNECTION UNIT

Fault finding - System operation 87B

87B-33

PASSENGER COMPARTMENT CONNECTION UNIT

Fault finding - System operation 87B

87B-33

V9

MR-372-J84-87B000$086.mif

UCH Vdiag No.: 44, 48,

4C, 4D, 4F, 50

1.4.1.6 The door locking motors:

These are direct current motors (12 V supply). The door locking motors are controlled by the UCH.

The deadlocking function requires a second motor per door.