2008 RENAULT SCENIC battery

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-33
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-33V9 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.
1.4.2 Main components of the PROTECTION sub-function:
The protection sub-function is based on 4 main coded components:
–The Renault cards.
–The UCH.
–The electric steering column lock.
–The injection computer.
These parts are coded definitively: a part coded for one vehicle may not be used on another vehicle.
It is possible to replace a coded part with an uncoded part using special procedures in the CLIP tool and the vehicle
repair code (See Configuration and programming).
1.4.2.1 The Renault card:
The Renault card enables the vehicle to be started in two modes:
–starting by inserting the card into the reader:
–hands-free starting without insertion of the card into the card reader (hands-free vehicles).
The Renault card is powered by a 3 V battery. This battery is necessary to operate in standard and hands-free mode.
If the battery is too old, or if the vehicle is in an area of frequency interference, hands-free starting is not possible, but
always possible by inserting the Renault card into the reader.
1.4.2.2 The UCH:
a) The UCH detects the starting request (Start button pressed under starting conditions).
b) The UCH authenticates the Renault card via the starting aerials for hands-free mode, or via the card reader for
transponder mode.
c) The UCH manages the exchange with the steering column lock:
The UCH sends an unlocking request to the steering column via the vehicle's multiplex network, and the steering
column responds with the status of the lock bolt.
d) The UCH requests activation of the + after ignition feed from the Protection and Switching Unit.
e) The UCH manages the exchange with the injection computer:
The UCH and the injection computer exchange their codes via the vehicle's multiplex network to deactivate protection
and unlock the immobiliser.
f) The UCH requests the Protection and Switching Unit to supply the starter motor.

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-34
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-34V9 MR-372-J84-87B000$086.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
1.4.2.3 The electric steering column lock:
The electric steering column lock is controlled by the UCH. The steering column lock works by inserting and
removing a lock bolt. It replaces the Neimann type lock.
The steering column lock is powered outside + after ignition feed. The steering column lock supply is via the after
ignition relay (located in the Protection and Switching Unit) in its rest position, from where it is distributed to the
column lock by the UCH.
The UCH sends an unlocking request and a code to the steering column lock, via the vehicle's multiplex network.
The multiplex network unlocks the steering column lock if the code is recognised.
A sensor located on the column lock bolt informs the UCH, via the multiplex network and by wire connection, that it
is unlocked.
When unlocking is confirmed, the UCH activates the + after ignition feed via the Protection and Switching Unit. The
column lock is no longer supplied.
The column lock has a "+ after ignition feed present on vehicle" wire signal which inhibits locking while the feed is
active.
1.4.2.4 The injection computer:
The injection computer is coded and unlocks following the encrypted challenge exchange with the UCH.
1.4.2.5 The starting aerials (hands-free vehicles):
There are 3 transmitter aerials located in the passenger compartment. They are controlled by the UCH to interrogate
the card during a starting request or in confirming the presence of the card in the vehicle (e.g. after a door is
opened).
The power used allows the whole passenger compartment to be covered, including the boot. Overspill outside the
passenger compartment is minimal.
1.4.2.6 The card reader:
The card reader is connected to the UCH by a wire connection. It provides the transponder function (like a key
recognition ring). It therefore allows authentication of a Renault card without a battery.
If the card is not detected or recognised during hands-free starting, the card reader flashes to tell the customer to
insert the Renault card.IMPORTANT IMPORTANT
The steering column lock is:
–not removable when the bolt is disengaged,
–fitted with a left-hand thread self-shearing mounting bolt.

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 - Configurations and programming
87B
87B-51
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Configurations and programming
87B
87B-51V9 MR-372-J84-87B000$215.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Configurations and programming
1/ GENERAL INFORMATION
The engine immobiliser protection system is controlled by a RENAULT card recognition system with random rolling
code.
A coded transponder chip (operating without a battery) independent of the remote control function is built into each
of the vehicle's RENAULT Cards.
The engine immobiliser is active a few seconds after the RENAULT Card is removed from the card reader. Its status
is shown by the flashing warning light on the instrument panel and by locking of the steering column lock.
To obtain the immobiliser code, see Technical Note 5037A, Code delivery procedure.
There are two programming methods: "Not connected" to the code server mode and "connected" to the code
server mode.
–In the "not connected" mode, the CLIP diagnostic tool supplies a programming key and the user enters the
immobiliser code.
–In the "connected" mode, the CLIP diagnostic tool automatically exchanges the programming key and the
immobiliser code.
IMPORTANT
If not all of the Renault cards are available, reallocate all Renault cards later. Cards not inserted will no longer be
allocated to this vehicle.
IMPORTANT
In "not connected" mode, once the tool has issued the programming key, the user has a limited amount of time
in which to enter the immobiliser code.
If this time expires, the CLIP diagnostic tool displays the message "Time expired. Restart the procedure.
Note:
When only the UCH is replaced, there is no operation to perform on the injection computer or the steering column
lock, they retain the same immobiliser code.
IMPORTANT
Once a part is programmed with a code, it is allocated to the vehicle; the code cannot be deleted and the part
cannot be reprogrammed with another code. The programmed code cannot be erased.
IMPORTANT
In "connected" mode, the exchange of the programming key and the entry of the immobiliser code is done
automatically.
If the connection parameters are not met, "connected" mode switches automatically to "not connected" mode.
MR-372-J84-87B000$215.mif

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
87B
87B-77
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
87B
87B-77V9 MR-372-J84-87B000$301.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
DF005
PRESENT
OR
STOREDCARD
1.DEF: Card battery low
1.DEF
NOTESConditions for applying the fault finding procedure to
stored faults:
Perform 5 start operations with each vehicle card.
Check the condition of the card battery and that it is inserted the right way round.
Replace the battery if necessary.
After each battery change, check that the fault does not recur after 5 starts.
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_DF005 /UCH_V48_DF005/UCH_V4C_DF005/
UCH_V4D_DF005/UCH_V4F_DF005/UCH_V50_DF005

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Conformity check
87B
87B-117
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Conformity check
87B
87B-117V9 MR-372-J84-87B000$387.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Conformity check
MAIN COMPUTER STATUSES AND PARAMETERS
SR.*: sunroof.Note:
Certain statuses and parameter do not affect all the Vdiags.
NOTESOnly carry out this conformity check after a complete check with the diagnostic tool
(fault reading and configuration checks).
Application condition: engine stopped, + after ignition feed present.
Sub-functionParameter or
Status
checked Action Display and Notes Fault finding
UCHPR001:Battery voltage9 V < X < 16 VIn the event of a fault,
consult the interpretation
of parameter PR001.
ET014:Control power
levelNONE
ACCESSORIES FEED
TIMED
APCNone
ET087:One-touch
window control/
SR.*
authorisationACTIVE
INACTIVEIn the event of a fault, refer
to the interpretation of
status ET087.
ET098:ADAC* buttonDEPRESSED
RELEASEDIn the event of a fault,
consult the interpretation
of status ET098.
ET195:UCH frequency
(IN MHz)315
433None
ET205:Type of UCH RF
aerialINTERNAL
EXTERNALNone
ET010:Card frequency
(in MHz)315
433None
UCH_V44_CCONF/UCH_V48_CCONF/UCH_V4C_CCONF/
UCH_V4D_CCONF/ UCH_V4F_CCONF/UCH_V50_CCONF
MR-372-J84-87B000$387.mif

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Conformity check
87B
87B -127
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Conformity check
87B
87B -127V9 MR-372-J84-87B000$387.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
FUNCTION: AIR CONDITIONING
Sub-function: Heating
*RCH = Passenger Compartment Heating Resistor
NOTESOnly carry out this conformity check after a complete check with the diagnostic tool
(fault reading and configuration checks).
Application condition: engine stopped, + after ignition feed present.
Sub-
functionParameter or
Status
checked Action Display and Notes Fault finding
HeatingPR001:Battery voltage9 V < X < 16 V In the event of a fault,
consult the
interpretation of
parameter PR001.
PR002:External
temperature Temperature in ˚CIn the event of a fault,
consult the
interpretation of
parameter PR002.
ET017:Number of RCH*
required0, 1, 2, 3, 4 or 5In the event of a fault,
consult the
interpretation of status
ET017.
ET018:Number of RCH*
authorised by
alternator0, 1, 2, 3, 4 or 5In the event of a fault,
consult the
interpretation of
status ET018.
ET019:Number of RCH*
authorised by
injection computer0, 1, 2, 3, 4 or 5In the event of a fault,
consult the
interpretation of status
ET019.
ET015:Passenger
compartment fan ACTIVE
INACTIVE
Note:
This status is only operative
for manual air conditioning
systems (and heater versions
without air conditioning). In the event of a fault,
refer to the
interpretation of status
ET015.

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Conformity check
87B
87B -128
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Conformity check
87B
87B -128V9 MR-372-J84-87B000$387.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
FUNCTION: AIR CONDITIONING
Sub-function: Heating (continued)
*RCH = Passenger Compartment Heating Resistor
NOTESOnly carry out this conformity check after a complete check with the diagnostic tool
(fault reading and configuration checks).
Application condition: engine stopped, + after ignition feed present.
Sub-
functionParameter or
Status
checked Action Display and Notes Fault finding
HeatingET020:Number RCH*
activated.0, 1, 2, 3, 4 or 5In the event of a fault,
refer to the
interpretation of status
ET020.
ET021:RCH* 1 relay control ACTIVE
INACTIVE In the event of a fault,
consult the
interpretation of
status ET021.
ET022:RCH* 2 relay controlACTIVE
INACTIVE In the event of a fault,
consult the
interpretation of
status ET022.
ET023:RCH* 3 relay controlACTIVE
INACTIVEIn the event of a fault,
consult the
interpretation of
status ET023.
ET031:Fast idle speed
request for RCH*INACTIVE
Fast idle speed to prevent
battery dischargeIn the event of a fault,
consult the
interpretation of status
ET031.
ET169:EngineSTOPPEDIn the event of a fault,
refer to the
interpretation of
status ET169.
ET025:Retractable roofCLOSED
NOT CLOSED
ABSENTIn the event of a fault,
consult the
interpretation of status
ET025.
ET026:Heated rear screen
switchACTIVE
INACTIVEIn the event of a fault,
consult the status
interpretation ET026.