2008 RENAULT SCENIC transmission

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-10
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-10V9 MR-372-J84-87B000$086.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
Statuses available for the locking function:
System operation may be viewed using statuses ET045 RF frame received, ET066 Card button press received
and ET067 Card button press recognised.
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.
d/ Boot-only locking/unlocking by pressing the "toggle boot status" button:
The boot alone may be locked/unlocked by pressing the "toggle boot status" button on the Renault card ("open
tailgate" symbol), if the card is less than 50 m from the vehicle (this distance varies according to the environment and
the battery power). The RF reception aerial is inside the UCH (except Scenic II fitted with the SSPP function).
Pressing the toggle boot status button on the Renault card starts the boot-only locking/unlocking procedure. When
the toggle boot status button is pressed, the card sends a 433 MHz encrypted signal to the UCH (315 MHz in Japan).
If the UCH authenticates the Renault card, it will authorise or inhibit opening of the boot depending on the previous
status (locked or unlocked).
Conditions required:
–The Renault card button must be pressed within the area covered by the card's radio frequency signal (this distance
varies according to the environment and the battery power).
–No + after ignition feed on the vehicle.
–No card in the card reader.
The statuses available for the boot-only unlocking/locking function (and for the opening rear screen if fitted)
are:
System operation may be viewed using statuses ET045 RF frame received, ET066 Card button press received
and ET067 Card button press recognised.
The open or closed status of the boot as seen by the UCH can be checked using status ET050 Tailgate/boot.
The status of the tailgate opening request is visible using status ET062 Tailgate opening request.
The open or closed status of the opening rear screen (if fitted) as seen by the UCH can be checked using status
ET041 Opening rear screen.
The status of the request to open the rear screen (if fitted) 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.
e/ Principle of the identifier code:
The Renault card is authenticated by the UCH by transmission of a "rolling code" for the access function. The code
transmitted automatically increases incrementally each time the card is pressed.
To allow for the case where the signal is not received by the UCH, a table of 1024 accepted codes has been created.
The UCH and the Renault card can become desynchronised if the limit of 1024 possible presses is exceeded, that is
the customer has pressed more than 1024 times outside the reception zone.
If the Renault card does become desynchronised (code transmitted by the Renault card is outside the acceptance
limit of the UCH), the user can access his vehicle using the emergency insert. Resynchronisation is performed when
the vehicle is started with the card in the card-reader, or by removing/replacing the card battery.

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
87B
87B -166
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
87B
87B -166V9 MR-372-J84-87B000$473.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
ET047
BRAKE PEDAL POSITION
NOTESThe accessories relay must operate.
During pedal travel, it is possible to obtain an undetermined or inconsistent status for
status ET047 if the brake pedal is left in an "indeterminate zone", with the brake pedal
switch in between the released position and the depressed position (see System
operation).
This treatment applies only in cases in which the status is inconsistent or
undetermined, with full load on the accelerator or completely released from the brake
pedal.
Special note:
Switch on forced after ignition.
Use Wiring Diagrams Technical Note for MEGANE II or SCENIC II.
ET047 Inconsistency with the pedal depressed.
Check the condition and connection of the brake pedal switch connector.
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.
Remove the brake pedal switch and check the insulation between connections BPT and 5A of component 160
(switch piston free).
Only replace the brake pedal switch if it is not correct.
Check the condition and connection of the UCH connector PE2.
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.
With the UCH and brake pedal switch disconnected:
Check the insulation from + 12 V of the following connection:
●Connection code 5A, between components 645 and 160.
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.
The line is shared with the injection computer and the automatic transmission computer (if the vehicle is fitted with
an automatic transmission). In the event of faulty insulation, use a wiring diagram to check the connections
between the brake pedal switch connector and these computers.
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_ET047/UCH_V48_ET047/ UCH_V4C_ET047/
UCH_V4D_ET047 /UCH_V4F_ET047/UCH_V50_ET047

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
87B
87B -167
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
87B
87B -167V9 MR-372-J84-87B000$473.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
ET047
CONTINUED 1
ET047 Undetermined without depressing the pedal.
Check the condition and connection of the brake pedal switch connector.
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 for + 12 V on connection BPT of component 160.
If not correct:
–Check the condition and connection UCH connectorPP3. 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.
–With the UCH and the brake pedal switch disconnected, check the insulation in relation to earth and the
continuity of the following connection:
●Connection code BPT between components 645 and 160.
If the connection is faulty and if there is a repair procedure (see Technical Note 6015A, Electrical wiring repair,
Wiring: Precautions for repair), repair the wiring, otherwise replace the wiring.
Remove the brake pedal switch and check the continuity between connections BPT and 5A of component 160
(switch piston pressed).
Only replace the brake pedal switch if it is not correct.
Check the condition and connection of the UCH connector PE2.
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.
With the UCH and brake light switch disconnected:
Check the insulation and continuity of the following connection:
●Connection code 5A, between components 645 and 160.
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.
The line is shared with the injection computer and the automatic transmission computer (if the vehicle is fitted with
an automatic transmission).
In the event of faulty insulation, it is therefore necessary, using a wiring diagram, to check the connections between
the brake pedal switch connector and these computers.
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 Chart
87B
87B -373
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart
87B
87B -373V9 MR-372-J84-87B000$989mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
Manual gearbox
Automatic gearbox
ALP48 Erratic starting
NOTESOnly consult this customer complaint after a complete check with the diagnostic
tool.
Make sure that the clutch pedal switch is working correctly.
To do this, check the consistency of status ET048 Clutch pedal position in the UCH.
In the event of a problem, use the fault-finding procedure DF003 "Clutch switch circuit".
Make sure that the brake pedal switch is working correctly.
To do this, check the consistency of status ET047 Brake pedal position in the UCH.
In the event of a problem, use the fault-finding procedure DF004 "Brake light switch circuit".
Make sure that the gear selector lever is working correctly.
To do this, check the consistency of status ET005 Manual gearbox lever position in the Protection and Switching
Unit.
In the event of a fault, use the fault finding procedure for status ET005.
If the fault is still present, contact the Techline.
Make sure that the brake pedal switch is working correctly.
To do this, check the consistency of status ET047 Brake pedal position in the UCH.
In the event of a problem, use the fault-finding procedure DF004 "Brake light switch circuit".
Make sure that the clutch pedal switch is working correctly.
Particularly by checking the consistency of status ET108 Automatic transmission lever position in the UCH.
In the event of a fault, use fault finding procedure for status ET108.
If the fault is still present, contact the Techline.
AFTER REPAIRCarry out a complete check with the diagnostic tool.
UCH_V44_ALP48 /UCH_V48_ALP48/UCH_V4C_ALP48/
UCH_V4D_ALP48/UCH_V4F_ALP48/UCH_V50_ALP48