2008 RENAULT SCENIC Passenger Comparment Connection Unit Workshop Manual

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

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-21
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-21V9 MR-372-J84-87B000$086.mif
1.1.12 Special feature of the rear access aerial wiring on 5-door vehicles:
There are 2 types of fitting for the rear access aerials depending on the fabrication date of the vehicle:
- Vehicles manufactured before January 2007:
An identical access aerial in each door handle.
- Vehicles manufactured after January 2007:
– No access aerial in the rear door handles.
– Access aerials in the front door handles identical to 3-door vehicles.
The vehicle configuration can be identified by reading configuration LC122 REAR ACCESS AERIALS and can be
configured using configuration CF224 REAR ACCESS AERIAL.
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
1

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-23
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-23V9 MR-372-J84-87B000$086.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
1.2 SUB-FUNCTION: PROTECTION
1Steering column lock
2Injection computer
3Card reader
4Start button
5Starter aerials
6Renault Card
7Multiplex network
8Wire connection
The UCH shares control of the vehicle's immobiliser protection system with other computers.
De-protection of the vehicle is performed in three consecutive stages:
–a) Authentication of the card (hands-free or card reader).
–Unlocking of the steering column lock (to allow after ignition feed to be established).
–Unlocking the injection computer.
1.2.1 Authentication of the Renault card:
Authentication is performed differently depending on whether the vehicle is fitted with the hands-free option or not.
a) Authentication of the Renault card when the vehicle is fitted with the hands-free option:
When the user presses the start button, the UCH activates its starting aerials and authenticates a card in the
following way:
1/ The UCH activates its three starting aerials which generate a 125 kHz radio frequency signal. This signal is sent
to the Renault card.
2/ If the Renault card is located in the zone covered by the starting aerials and recognises its UCH, it responds
directly to the UCH with a 433 MHz signal giving its identifier.

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-24
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-24V9 MR-372-J84-87B000$086.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
3) The UCH decrypts the response and compares it with that stored in its memory. If the result is correct, it continues
the starting procedure. The aerials stop transmitting once the card is authenticated.
If no Renault card responds in hands-free mode, the UCH interrogates the card reader. If the Renault card is in the
card reader, authentication is via transponder.
The card reader must be used to start in hands-free mode in the following situations:
–flat card battery,
–vehicle in an area of frequency interference,
–boot open (indication on instrument panel).
The statuses and commands available on the card authentication function:
–ET035 Radio frequency signal received.
–ET070 Start button.
–ET046 Immobiliser.
–ET014 Power supply level requested.
–AC036 Internal aerial testing.
b) Authentication of the Renault card when the vehicle is not fitted with the hands-free option:
When the user presses the start button, the UCH authenticates the card in the card reader using the transponder
mode (short-range data exchange at 125 KHz). The transponder mode does not require a battery in the card.
1Wire connection
2Card reader
3Short range TRANSPONDER connection
4Renault Card
The statuses and commands available on the card authentication function:
–ET070 Start button
–ET046 Immobiliser
–ET014 Power supply level requested