2008 RENAULT SCENIC interior lights

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-43
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-43V9 MR-372-J84-87B000$129.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
4FUNCTION: LIGHTING
4.1 Sub-function: LIGHTING CONTROL
The UCH receives the request from the driver, from the lighting stalk, from the hazard warning lights button and, if
fitted to the vehicle, from the light detector.
The UCH requests the Protection and Switching Unit, via the multiplex network, to provide power to the side lights,
dipped headlights, main beam headlights and fog lights (front).
If a request to activate the lighting is made, the UPC provides power to the xenon bulb computers.
The dipped headlights are still supplied when the main beam headlights are activated.
The following statuses can be displayed:
ET081 Lighting stalk position.
ET082 Rear fog lights request.
ET085 Hazard warning lights switch.
ET083 Left-hand direction indicator request.
ET084 Right-hand indicator request.
If the UCH cannot determine the position of the control stalk, or inform the Protection and Switching Unit of the
control stalk's position, the Protection and Switching Unit will activate the dipped headlights.
4.2 Sub-function: LIGHTING POWER
The UCH controls the power supply for the rear fog light (a single one), direction indicators and interior lighting (roof
lights and footwell/floor lights).
The interior lighting request can be displayed using the ET112 Interior lighting control status.
Operation of the lights powered by the UCH can be checked using the actuator commands AC009 Rear fog lights,
AC022 Left-hand direction indicator, AC023 Right-hand direction indicator, AC021 Interior lights and AC027
Footwell/floor lighting.
Information displays Rain and light sensor Multiplex network
Steering column
controlUCHProtection and Switching
Unit
Rear fog light
Direction indicators
Interior lighting
Side lightsMain beam
headlights
Dipped
headlightsFront fog lights

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Status summary table
87B
87B -141
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Status summary table
87B
87B -141V9 MR-372-J84-87B000$430.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
*Trip computer: Not authorised
*Sunroof: Tool status Diagnostic tool title Vdiag
ET066Card detected button
V44, V48, V4C,
V4D, V4F, V50 ET067Card button press recognised
ET068Most recently locked by
ET069Most recently unlocked by
ET070Start button
ET071 Unprogrammed steering lock
ET072Steering lock
ET073Steering lock sensor signal
ET075+ Accessories present
ET077Wiper stalk position
ET078Windscreen washer request
ET079Rear screen washer request
ET080Rear screen wiper request
ET081Lighting switch position
ET082Rear fog lights request
ET083Left-hand indicator request
ET084Right-hand indicator request
ET085Hazard warning lights button
ET086Electric child safety lock V44, V48, V4C
ET087Sunroof*/one touch electric window authorisation
V44, V48, V4C,
V4D, V4F, V50 ET088Deadlocking activation source
ET090Deadlocking deactivation source
ET096Wiper stalk intermittent speed ring position
ET097Rear screen wiper park position
ET098ADAC* button
ET108Automatic gearbox lever position
ET109Reverse gear engaged
ET110UCH request to injection or Protection and Switching Unit
ET111Front fog lights request
ET112Interior lighting control

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses87B
87B - 229
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses87B
87B - 229V9 MR-372-J84-87B000$559.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
ET112
INTERIOR LIGHTING CONTROL
NOTESNo faults should be present or stored.
Use Wiring Diagrams Technical Note for MEGANE II or SCENIC II.
ET112 is Inactive but the interior lights are operating.
Check whether the footwell/floor switches operate correctly; if YES, contact the Techline.
If NO, check the earth on connection 13AC of component 645, if there is an earth, check the continuity and
insulation of the wiring harness between the UCH and the switch connectors (see wiring diagram).
If the connector is faulty and if there is a repair procedure (see Technical Note 6015A, Repairing electrical
wiring, Wiring: Precautions for repair), repair the connector; otherwise, replace the wiring.
If the fault is still present, replace the faulty switch.
AFTER REPAIRCarry out another fault finding check on the system.
Clear the stored faults.
Deal with any other faults.
UCH_V44_ET112/UCH_V48_ET112/UCH_V4C_ET112/
UCH_V4D_ET112/UCH_V4F_ET112/UCH_V50_ET112

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Command summary table87B
87B - 246
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Command summary table87B
87B - 246V9 MR-372-J84-87B000$731.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Command summary table
*RCH: Passenger Compartment Heating Resistor
*CPE: Electric central door locking
*SR.: SunroofTool command Diagnostic tool title Vdiag
AC003Immobiliser warning light
V44, V48,
V4C, V4D,
V4F, V50 AC004Central door locking
AC005Central door unlocking
AC006Driver's door unlocking
AC007Rear screen wiper
AC008Front fog lights
AC009Rear fog lights
AC015Air conditioning button indicator light
AC016RCH* 1 relay
AC017RCH* 2 relay
AC018RCH* 3 relay
AC019Heated rear screen indicator light
AC020CPE* button indicator light
AC021Interior lights
AC022Left-hand direction indicator
AC023Right-hand direction indicator
AC024Card reader lighting
AC025One-touch window control/SR.* authorisation
AC026Start button lighting
AC027Footwell lights
AC030Headlight washer relay 1 (only if Vdiag 44 UPC)
AC031Headlight washer relay 2 (only if Vdiag 44 UPC)
AC032Driver's side external aerial testing
AC033Passenger's side external aerial testing
AC034Boot external aerial test
AC036Internal aerial test
AC037Transmitter aerial fault finding
AC076Child safety lock indicator light
MR-372-J84-87B000$731.mif

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of commands87B
87B - 266
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of commands87B
87B - 266V9 MR-372-J84-87B000$774.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
AC021
INTERIOR LIGHTS
NOTESNo faults should be present or stored.
This command is for testing interior lights operation.
Check the bulbs.
Use Wiring Diagrams Technical Note for MEGANE II or SCENIC II.
The interior lights do not light when the command is activated.
Check the condition and connection of the interior lights connectors.
If the connector is faulty and if there is a repair procedure (see Technical Note 6015A, Repairing electrical
wiring, Wiring: Precautions for repair), repair the connector; otherwise, replace the wiring.
Check for earth on connection MAM of components 213 and 300.
If the connector is faulty and if there is a repair procedure (see Technical Note 6015A, Repairing electrical
wiring, Wiring: Precautions for repair), repair the connector; otherwise, replace the wiring.
With the command running, check for + 12 V feed on connection BPT of components 213 and 300.
If OK, check the bulbs again, and if still not OK replace the interior light(s).
Check the condition and connection of the PP3 connector on the UCH.
If the connector is faulty and if there is a repair procedure (see Technical Note 6015A, Repairing electrical
wiring, Wiring: Precautions for repair), repair the connector; otherwise, replace the wiring.
Check the insulation and continuity of the following connection:
●Connection code 13E.
Between components 645 and 213.
Between components 645 and 300.
If the connection or connections are faulty and there is a repair procedure (see Technical Note 6015A, Electrical
wiring repair, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
If the fault is still present, contact the Techline.
AFTER REPAIRCarry out another fault finding check on the system.
Clear the stored faults.
Deal with any other faults.

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart87B
87B - 354
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart87B
87B - 354V9 MR-372-J84-87B000$946.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
ALP33 Locking fault in hands-free mode
NOTESCheck that there is no APC or card in the card reader.
Conduct the tests with the other cards allocated to the vehicle.
First carry out a function fault finding check.
Make sure all the doors are fully closed (check that the interior lights are off or switch
on the ignition to check that no door is open from the instrument panel symbol).
Visually check that the lock buttons are not stuck in the down position.
Check that one of the cards has not been disabled (locked in the vehicle), activate the
+ after ignition feed with this card and attempt to unlock again with it.
If the fault only affects one card, replace the faulty card.
Make sure statuses ET058, ET059 and ET060 indicating a press on the lock button for each door or the boot
become active when the button is pressed.
Test all the lock buttons.
See the section for dealing with the status(es) concerned.
Make sure that the cards belong to the vehicle and are properly configured by running command SC005 Check
card.
If the cards belong to the vehicle but have a faulty configuration, program the cards.
Run command AC037 Transmitter aerial fault finding and see if a fault appears.
In the event of a present or stored fault, refer to the procedure for it.
Run the following commands and check the card coverage zone on each side of the vehicle:
AC032 Driver's side external aerial test
AC033 Passenger's side external aerial test
AC034 Boot external aerial test.
The card reader starts to flash as soon as a card is detected in the coverage zone.
The maximum distance from the vehicle is 1.5 m.
If not correct, apply the fault finding procedure associated with each command.
This mode enables a Mégane hands-free card to be detected in the coverage zone of the vehicle or that of
another vehicle.
Configure the UCH in hands-free function (see Configurations and programming).
If the fault is still present, contact Techline.
AFTER REPAIRCarry out a complete check using the diagnostic tool.
UCH_V44_ALP33 /UCH_V48_ALP33/UCH_V4C_ALP33/
UCH_V4D_ALP33/UCH_V4F_ALP33/UCH_V50_ALP33