2008 RENAULT SCENIC roof

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-22
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-22V9 MR-372-J84-87B000$086.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
1.1.13 Principle of automatic window relift:
When the doors are locked, and the lock button on the card is pressed twice in succession (or the door or boot if
the vehicle is fitted with hands-free function), the windows close automatically (as well as the sunroof, if fitted to
the vehicle).
The function is available on certain vehicles (see table below) depending on the number of one touch windows on
the vehicle and depending on the bodywork phases.
The automatic window relift function cannot be configured separately; it is automatically configured during special
command SC008 UCH type according to the vehicle type, number of one-touch windows and the production number
type.
1.1.14 Principle of new vehicle storage mode:
The vehicle is configured in this mode when it leaves the factory to optimise its power consumption:
–The immobiliser warning light is inhibited.
–The direction indicator warning lights are lit continuously on the instrument panel.
Before delivering the vehicle to the customer, deactivate this mode:
–By flipping down the steering column controls with the after ignition feed off.
–Or using command VP016 Deactivate new vehicle storage mode.
This function can only be activated in the factory with UCH Vdiag 4F or 50.If Then
Vehicle type One-touch window(s)Production
number typeFunction of automatic
window relift:
All except cabriolet phase 1 and 2
bodyworkWITHOUT WITHOUT
4-door phase 1 bodywork 1 driver OTW Jxxxxxx WITHOUT
4-door phase 1 bodywork 1 driver OTW OTHERS WITH
All except cabriolet and 4-door phase
1 bodywork1 driver OTW WITH
All except cabriolet phase 2 bodywork 1 driver OTW WITHOUT
All except cabriolet phase 1 and 2
bodywork2 or 4 OTW WITH
Cabriolet phase 1 and 2 bodywork WITHOUT WITHOUT

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-36
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-36V9 MR-372-J84-87B000$086.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
1.4.3.7 Automatic gearbox computer (if fitted):
The computer informs the UCH of the selector position (park, neutral, etc.) via the multiplex network.
2 AIR CONDITIONING FUNCTION
The type of air conditioning control can be displayed by configuration reading LC013 Air conditioning type and
configured using command CF019 Air conditioning type (can be configured during configuration of the UCH
by the SC008 UCH type command).
2.1 Sub-function: USER SELECTION (Non-regulated air conditioning only)
The UCH receives the signal from the air conditioning panel via cable connection for the air conditioning request, for
electric heated rear screen and the signal for passenger compartment blower operation.
The UCH sends the request to the Protection and Switching Unit to start electric heated rear screen de-icing.
The UCH sends the request to the injection system to activate the air conditioning compressor.
The following statuses can be displayed:
–ET029 Air conditioning button.
–ET028 Heated rear screen button.
–ET015 Passenger compartment fan.
Operation of the indicator lights on the air conditioning and electric heated rear screen request buttons can be
checked using the following actuator commands:
AC015 Air conditioning button indicator and AC019 Heated rear screen indicator.
2.2 Sub-function: HEATING
The UCH manages the passenger compartment heating resistors (RCHs) by controlling power relays according to
the request for ventilation in the passenger compartment, the engine coolant temperature, the external temperature,
the electrical power balance, engine loading and, for the cabriolet version, if the roof is open.
The following statuses and parameters produced by the UCH can be displayed:
–PR001 Battery voltage.
–PR002 External temperature.
–ET015 Passenger compartment blower only with non-regulated air conditioning.
–ET017 Number of RCH*s required.
–ET018 Number of RCH*s authorised by alternator alternator charge rate.
–ET019 Number of RCH*s authorised by injection system.
–ET020 Number of RCH*s activated.
–ET021 RCH* 1 control.
–ET022 RCH* 2 control.
–ET031 Fast idle request for RCH.
–ET169 Engine.
–ET025 Retractable roof for cabriolet version only.
–ET026 Heated rear screen switch.
*RCH = Passenger Compartment Heating Resistors

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 - Configurations and programming
87B
87B-62
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Configurations and programming
87B
87B-62V9 MR-372-J84-87B000$215.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
8/ UCH TYPE CONFIGURATION PROCEDURE (SC008)
8.1 Vdiag 44, 48
This procedure will enable the UCH to be configured in relation to the vehicle to provide optimum running.
–Click on the Repair mode and in the Programming menu,
–confirm line SC008 UCH type,
–follow the procedure and enter the following data:
–CF097 Vehicle type (3-door/4-door/5-door/cabriolet/extended MPV/MPV/Estate),
–confirm, follow the procedure and enter the following data:
–CF010 Hands-free function (WITH or WITHOUT),
–CF023 Tyre pressure monitoring system function (WITH or WITHOUT),
–CF057 Type of heating resistors (NONE, 1000 W, or 1800 W),
–CF019 Type of air conditioning (HEATING, AUTOMATIC, MANUAL),
–CF027 Type of windscreen (TINTED, HEAT INSULATING),
–CF035 Rain/light sensor (WITH or WITHOUT),
–CF014 Daytime running lights (WITH or WITHOUT),
–CF022 Factory fitted perimeter protection (WITH or WITHOUT): function only available on vehicles for the
Mexican market,
–CF173 One-touch window(s)/Sunroof (WITH or WITHOUT),
–confirm, follow the procedure and enter the following data:
–CF036 Selective opening of the opening elements (WITH or WITHOUT) Only if CF010 = WITHOUT
–confirm, follow the procedure and enter the following data:
–CF085 Valet card function (WITH or WITHOUT) Function only available in Mexico,
–(This status will only be available if the following conditions are met: CF036 Selective opening of opening
elements = WITH),
–check that the options configured are those desired and finish.

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Configurations and programming
87B
87B-64
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Configurations and programming
87B
87B-64V9 MR-372-J84-87B000$215.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
8.3 Vdiag 4F and 50:
This procedure will enable the UCH to be configured in relation to the vehicle to provide optimum running.
–Click on the Repair mode and in the Programming menu,
–confirm line SC008 UCH type,
–follow the procedure and enter the following data:
–CF097 Vehicle type (3-door/4-door/5-door/cabriolet/Estate) except for Scénic (extended MPV/MPV).
–confirm, follow the procedure and enter the following data:
CF010 Hands-free function (WITH or WITHOUT),
CF023 Tyre pressure monitoring system (WITH or WITHOUT),
CF057 Type of heating resistors (NONE, 1000 W, or 1800 W),
CF019 Type of air conditioning (HEATING, AUTOMATIC, MANUAL),
CF027 Type of windscreen (TINTED, HEAT INSULATING),
CF035 Rain/light sensor (WITH or WITHOUT),
CF014 Daytime running lights (WITH or WITHOUT),
CF189 Protection type (TYPE 1, TYPE 2 or WITHOUT): TYPE 1 = with factory
fitted perimeter protection, TYPE
2 = with Cobra type alarm and WITHOUT = without factory fitted perimeter protection and without Cobra alarm.
–confirm, follow the procedure and enter the following data:
CF173 One-touch window(s)/sunroof (1 OTW* phase 1/1 OTW* phase 2/2 or 4 OTW*/WITHOUT): Absent if
CF097 = Cabriolet.
1 OTW* phase 1 = 1 driver side one touch window with a phase 1 bodywork vehicle.
1 OTW* phase 2 = 1 driver side one touch window with a phase 2 bodywork vehicle.
2 or 4 OTW = 2 or 4 one touch windows.
WITHOUT = no one touch windows on the vehicle.
–confirm, follow the procedure and enter the following data:
CF188 Production number type (Jxxxxxx or OTHER): only if CF097 = 4-doors and CF173 = 1 OTW* Phase 1.
The production number is located on the oval plate on the vehicle's right-hand side B-pillar. The production number
consists of 7 characters: 1 letter indicating the production plant followed by 6 figures.
–If the production number starts with the letter J, select Jxxxxxx.
–If the production number does not start with the letter J, select Other.
–Confirm, follow the procedure and enter the following data:
CF036 Selective opening of opening elements (WITH or WITHOUT): Only if CF010 = WITHOUT CF016 PAX
System type tyre (WITH or WITHOUT): Only if CF097 = MPV or Extended MPV and if CF023 = WITH.
–confirm, follow the procedure and enter the following data:
CF085 Valet card function (WITH or WITHOUT): Only if CF036 = WITH and CF023 = WITHOUT.
–check that the options configured are those desired and finish.
OTW*: One-touch window(s)IMPORTANT
Only configure WITH valet card function when the vehicle is electrically pre-equipped with the valet option.
Incorrect configuration may cause certain pieces of equipment to malfunction.
Note:
After having finished the UCH configuration, run command AC037 "TRANSMITTING AERIALS FAULT FINDING"
and check that there are no faults.

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Configurations and programming
87B
87B-67
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Configurations and programming
87B
87B-67V9 MR-372-J84-87B000$215.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
UCH configurations (continued):
T.O*: Sunroof.Configuration
readingConfigurationName of
configurationChoice of
configurationVdiag
LC017Tyre Pressure Monitor
FunctionSC008 UCH typeWITH/WITHOUT44, 48, 4C, 4D, 4F
and 50
LC018Hazard warning lights
switched on by ABS CF024WITH/WITHOUT44, 48, 4C, 4D, 4F
and 50
LC019Rear screen wiper park
position controlAutomatic
configurationWITH/WITHOUT 44, 48, 4C, 4D
LC020Factory fitted perimeter

protection SC008 UCH typeWITH/WITHOUT 4C, 4D, 4F and 50
LC021Type of windscreen
SC008 UCH typeTINTED/HEAT
INSULATING44, 48, 4C, 4D, 4F
and 50
LC023 Engine type CF028F ENGINE/K
ENGINE/M
ENGINE44, 48, 4C, 4D, 4F
and 50
LC025See-me-home lighting CF032WITH/WITHOUT 44, 48, 4C, 4D
LC029 Selective door opening SC008 UCH typeWITH/WITHOUT44, 48, 4C, 4D, 4F
and 50
LC030Heating resistor type SC008 UCH typeNONE/1000 W/
1800 W 44, 48, 4C, 4D, 4F
and 50
LC035Child safety lockSC016 Child safety
lockWITH/WITHOUT 4C, 4D, 4F and 50
Automatic
configurationWITH/WITHOUT 44 and 48
LC041New vehicle storage modeVP016 ACTIVE/
INACTIVE 4F and 50
LC044 Rain/light sensor SC008 UCH typeWITH/WITHOUT 4F and 50
LC064 Rear screen wiper CF166 WITH/WITHOUT 4F and 50
LC070One-touch window(s)/
sunroof SC008 UCH typeWITH/WITHOUT 4F and 50
LC122Rear access aerialsCF224WITH/WITHOUT 50

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
87B
87B -104
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
87B
87B -104V9 MR-372-J84-87B000$344.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
DF031
PRESENT
OR
STOREDONE TOUCH WINDOW CONNECTION
CC.1: Short circuit to + 12 V
CO.0: Open circuit or short circuit to earth
NOTESConditions for applying the fault finding procedure to a stored fault:
If the fault becomes present after a one-touch window has been activated, then apply
this fault finding procedure.
Special note: If the vehicle is not fitted with one-touch windows, ignore this fault. Refer
to the information about Electric windows in the Fault finding chart section.
If the vehicle has Mégane II ph2 bodywork: see MR 366 Fault finding, 87D, Electric
windows - Sunroof.
Use Wiring Diagrams Technical Note for MEGANE II or SCENIC II.
Check the condition and connection of the electric window connector (tabs bent, broken, etc.).
If the connector is faulty and if there is a repair method (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the connector; otherwise, replace the wiring.
Check the condition and connection of the connector PE2 of the UCH (tabs bent, broken, etc.).
If the connector is faulty and if there is a repair method (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 21K.
Between components:
–645 and 202,
–645 and 203,
–645 and 204,
–645 and 304.
If the connection is 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.
UCH_V44_DF031 /UCH_V48_DF031/UCH_V4C_DF031/
UCH_V4D_DF03 1/UCH_V4F_DF031/UCH_V50_DF031