RENAULT SCENIC 2008 J84 / 2.G Passenger Comparment Connection Unit User Guide

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-11
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-11V9 MR-372-J84-87B000$086.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
f/ Display:
Unlocking is indicated by 1 flash of the direction indicators.
Locking is indicated by 2 flashes of the direction indicators.
When using the "boot status toggle" switch, display is not performed if a toggle request is made when the vehicle is
completely unlocked. In fact, in this case, the vehicle is not locked as only the boot is locked.
If one of the opening elements is detected as open when the request for locking the vehicle is made, the UCH will not
authorise vehicle locking and no indicators will flash to warn the user.
1.1.2 procedure of locking/unlocking by pressing the central door locking button:
This button is used to lock/unlock the vehicle while stationary or moving.
This button has no effect if the vehicle has been locked using the card in hands-free or manual mode.
Pressing the electric central door locking button when a door is unlocked will lock all the doors and the electric
central door locking indicator light will light up. Status ET044 CPE* button may be used to check that the button is
operating correctly.
The operation of the electric central door locking indicator light can be checked using command mode AC020 CPE*
button indicator light.
1.1.3 Principle of automatic locking when driving (RAID* system):
The Automatic Locking when Driving (RAID) function locks the vehicle as soon as the speed signal is above
approximately 4 mph (7 km/h).
Activation or deactivation of the RAID function can be viewed using ET043 RAID* function authorisation by CPE*.
The RAID function can be activated or deactivated by pressing and holding the electric door locking button for
approximately 5 seconds while the engine is running. Acknowledgement is indicated by a buzzer.
1.1.4 Principle of automatic relocking:
Automatic relocking takes place 2 minutes after hands-free or card unlocking if unlocking is not followed by the
opening of a door.
CPE*: Electric central door locking
RAID*: Renault Anti-Intruder Device Note:
Unlocking can be performed by the UCH if the airbag computer has detected an impact or if it is faulty (not
recognised on the multiplex network, internal fault, etc.). (see 88B, Multiplexing).

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-12
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-12V9 MR-372-J84-87B000$086.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
1.1.5 Principle of hands-free locking/unlocking:
1Passenger side optical sensors.
2Driver side optical sensors.
3Door handle and boot locking switches.
4Boot/rear screen opening switch.
5Access aerials.
6Opening element locking motors.
7Renault card.
a/ Main components of the hands-free 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,
–opening element locking motors.
b/ Hands-free unlocking:
When a hand is detected inside a handle (interruption of one of the optical beams) or a press on the boot opening
switch is detected, the UCH sends a 125 kHz signal to the access aerials and interrogates the access zone (driver-
side aerial interrogated first). If the Renault card is in the access zone, it responds to the UCH at 433 MHz. If the
UCH authenticates the Renault card, it requests unlocking of the opening elements or boot-only locking motors.
Hands-free unlocking of the entire vehicle by stage:
1The user places his/her hand around one of the door handles and the optical sensor detects a presence.
2If the Renault card is not disabled in hands-free, the UCH sends a 125 kHz encrypted signal over the access
aerials (initial interrogation is of the aerials on the side of the handle activated).
3If the Renault card recognises the code, it responds to the UCH using a 433 MHz encrypted signal.
4The UCH confirms that the Renault card code is correct and activates the locking motors.
* (3 or 5 access aerials depending on the number of doors and the fabrication date of the vehicle)

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-13
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-13V9 MR-372-J84-87B000$086.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
Conditions required:
–Interruption of one of the optical beams in one of the handles or pressing the boot or rear screen opening switch.
–A vehicle card detected by the access aerials.
–No + after ignition feed on the vehicle.
–The card must not be hands-free disabled (a Renault card is disabled for hands-free starting and access if it was
present in the vehicle when it was locked; the card is no longer disabled if it is detected by any aerial during
unlocking).
Statuses available for the unlocking function:
The UCH receives the unlocking request when an optical beam is cut on one of the handles. The sensors' power
supply can be displayed using the ET054 Optical sensors supplied status.
Operation of the sensors can be viewed using statuses ET055 Driver's side front optical sensor, ET056 Driver's
side rear optical sensor, ET057 Passenger side front/rear optical sensors and boot switch status ET060 Tailgate
locking button. The status of the tailgate opening request is visible using status ET061 Tailgate opening request.
The status of the request to open the rear screen can be checked using status ET062 Rear screen opening request.
The power supply level on the vehicle can be viewed using ET014 Power supply level requested.
The AC037 Transmitting aerials fault finding command interrogates the aerials for an update of potential faults.
Commands AC032 Test driver's side external aerials, AC033 Test passenger side external aerials and AC034
Test boot external aerials are used to check each zone separately. When the card is in the interrogated zone, the
card reader flashes. The interrogation lasts 1 minute.
These commands are used to check the hands-free access zones around the vehicle and will operate even if the
hands-free card does not belong to the vehicle.
c/ Hands-free unlocking of the boot only:
When a press on the boot opening switch is detected, the UCH receives the signal requesting opening (ET061
Tailgate opening request). The UCH sends a 125 kHz signal to the access aerials.
If the Renault card is in the access zone (initial interrogation on the boot side, then interrogation of both sides of the
vehicle), it responds to the UCH at 433 MHz.
If the UCH authenticates the card, the UCH orders unlocking of the boot only.
d) Hands-free locking:
When a press on a door handle closing switch is detected, the UCH sends a 125 kHz signal to the access aerials. If
the Renault card is in the access zone, it responds to the UCH at 433 MHz. If the UCH authenticates the card (and if
the UCH cannot be detected in the hands-free starting zone), the UCH requests the locking motors to lock.
If, however, there is another card in the vehicle, locking will be possible, but the card left in the vehicle will
temporarily lose its hands-free access and hands-free starting functions until the next unlocking operation
(inhibition).

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-14
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-14V9 MR-372-J84-87B000$086.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
Conditions required:
–At least one vehicle card detected by the access aerials and not detected by the starting aerials.
–No doors open.
–No Renault card in the card reader.
–No + after ignition feed on the vehicle.
–The card must not be hands-free disabled (a Renault card is disabled for hands-free starting and access if it was
present in the vehicle when it was locked; the card is no longer disabled if it is detected by any aerial during
unlocking).
Statuses available for the locking function:
The UCH receives the locking request in the form of an earth, when one of the locking buttons on the door handles
or in the centre of the boot badge is pressed.
The locking requests can be viewed using statuses ET058 Driver's side handle locking switch, ET059
Passenger's side handle locking switch and ET060 Tailgate locking switch. The statuses of the doors detected
by the UCH as open or closed are displayed using statuses ET053 Driver's door, ET042 Passenger's door, ET051
Rear left-hand door, ET052 Rear right-hand door, ET050 Tailgate/boot and ET041 Opening rear screen (if fitted
to the vehicle).
The power supply level on the vehicle can be viewed using ET014 Power supply level requested.
The AC037 Transmitting aerials fault finding command interrogates the aerials for an update of potential faults.
Commands AC032 Test driver's side external aerials, AC033 Test passenger side external aerials and AC034
Test boot external aerials are used to check each zone separately. When the card is in the interrogated zone, the
card reader flashes. The interrogation lasts 1 minute.
These commands are used to check the hands-free access zones around the vehicle and will operate even if the
hands-free card does not belong to the vehicle.
e/ Display
Unlocking is indicated by 1 flash of the direction indicators.
Locking is indicated by 2 flashes of the direction indicators.Hands-free locking of the entire vehicle by stage:
1) The user presses one of the locking switches on the door handle or tailgate (located in the badge).
2) If the Renault card is not disabled for hands-free operation, the UCH sends a 125 kHz encrypted signal to
the access aerials (interrogation of the aerials on the side of the activated handle is performed first), and to
the starting aerials.
3) If the Renault card authenticates the code, it responds to the UCH using a 433 MHz encrypted signal.
4)If the UCH detects at least one Renault card in the access zone and this is authenticated (at least one Renault
card detected by the external aerials and not detected by the starting aerials; this is necessary to avoid the
vehicle being locked with the card inside), the UCH activates the locking motors.
5) If the UCH detects other cards inside the vehicle, it disables these cards for hands-free functions (access
and starting) until the next time the vehicle is unlocked.

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-15
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-15V9 MR-372-J84-87B000$086.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
1.1.6 Principle of Electric Childproof Locking:
The UCH controls the rear door locks to prevent them from being opened by means of the interior door handles and
inhibits operation of the rear electric window switches.
The switch statuses and the activation of electric childproof locks can be viewed using the following statuses:
–ET233 Child safety lock switch,
–ET159 Rear left-hand door child safety lock,
–ET160 Rear right-hand door child safety lock.
The configuration Child safety lock can be read using configuration LC035 Child safety lock and modified (see
Configurations and programming) using the specific command SC016 Child safety lock (Vdiag 4C, 4D, 4F and
50).
Fault finding can be performed on the child safety lock switch indicator light using command AC076 Child safety
lock indicator light.
1.1.7 Principle of Deadlocking:
The UCH controls the door locks to prevent unlocking via the interior handles. This function is activated by pressing
and holding (+ 2 seconds) the Renault card's locking button or by pressing the door locking button twice.
The direction indicators flash rapidly three times for deadlocking (in addition to the two flashes for locking).
For this function to operate, the vehicle must have deadlocking (2 motors) and configuration LC003 Deadlocking
must be WITH (see Configurations and programming). Deadlocking is configured using CF009 Deadlocking.
The source of the last deadlocking activation/deactivation can be viewed using statuses ET088 Deadlocking
activation source and ET090 Deadlocking deactivation source.
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.
1.1.8 The valet card function, specific to certain countries (e.g. Mexico):
This function controls the valet card option which enables vehicles fitted with it to separately control unlocking of the
driver's door, the boot, or the passenger doors and the glovebox.
When the vehicle is electrically pre-equipped with the valet option and this option has been configured, the cards can
be used in two different customer modes. The "master" cards can unlock all the opening elements, but the "valet"
cards cannot unlock the glovebox, the boot and the passenger opening elements. They can only start the vehicle,
lock the whole vehicle, and unlock the driver's door. The function is configured with CF085 Valet card function
using the specific command SC008 UCH type. To access CF085, configure CF036 Selective opening element
opening to WITH.
To check that this function has been configured correctly, use LC016 Card valet function.

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-16
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-16V9 MR-372-J84-87B000$086.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
1.1.9 Special features of the tailgate wiring:
The tailgate opening control is wired differently depending on the type of vehicle:
–Phase 1 bodywork without hands-free function:
1Tailgate opening request reading
2Open tailgate status reading
3Motor control
4Tailgate motor
–Phase 1 mechanical with hands-free function: on vehicles manufactured before 17/01/2005 for type BCEJRK
and before 10/01/2005 for type L.
1Tailgate opening request reading
2Open tailgate status reading
3Motor control
4Tailgate motor

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-17
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-17V9 MR-372-J84-87B000$086.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
–Phase 2 mechanical with hands-free function: on vehicle manufactured after 10/01/2005 for type BCEJRK and
after 17/01/2005 for type L.
1Tailgate opening request reading
2Open tailgate status reading
3Motor control
4Tailgate motor
–Phase 2 bodywork:
1Tailgate opening request reading
2Open tailgate status reading
3Motor control
4Tailgate motor

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-18
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-18V9 MR-372-J84-87B000$086.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
1.1.10 Special features of opening rear screen wiring:
The rear screen opening control is wired differently depending on the type of vehicle:
–Phase 1 mechanical without hands-free function: on vehicles manufactured before 10/01/2005 for type
BCEJRK and before 17/01/2005 for type L.
1Ros* open request reading
2Ros* open status reading
3Motor control
4Ros* motor
–Phase 1 mechanical with hands-free function: on vehicle manufactured before 10/01/2005 for type BCEJRK
and before 17/01/2005 for type L.
1Ros* open request reading
2Ros* open status reading
3Motor control
4Ros* motor
Ros*: Rear opening screen

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-19
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-19V9 MR-372-J84-87B000$086.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
–Phase 2 mechanical without hands-free function: on vehicles manufactured after 10/01/2005 for type BCEJRK
and after 17/01/2005 for type L, except phase 2 bodywork.
1Ros* open request reading
2Ros* open status reading
3Motor control
4Ros* motor
–Phase 2 mechanical with hands-free function or Phase 2 bodywork: on vehicles manufactured after 10/01/
2005 for type BCEJRK and after 17/01/2005 for type L and vehicle with phase 2 bodywork.
1Ros* open request reading
2Ros* open status reading
3Motor control
4Ros* motor
Ros*: Rear opening screen

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-20
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-20V9 MR-372-J84-87B000$086.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
1.1.11 Special features of vehicle wiring (Mexico):
The glovebox locking/unlocking control is wired differently depending on the type of vehicle:
–Vehicle manufactured before 11/07/2005 for BCELJRK type:
1Passenger door, rear doors and boot opening control
2Passenger door, rear doors and boot closing control
3Glovebox motor
–Vehicle manufactured after 11/07/2005 for BCELJRK type:
1Driver's door and fuel filler flap closing control
2Driver's door and fuel filler flap opening control
3Glovebox motor
4Glovebox locking control relay
5Glovebox locking control