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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
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PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart
87B
87B -361
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart
87B
87B -361V9 MR-372-J84-87B000$989mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart
ALP36 Door(s) locking/unlocking fault
NOTESFirst carry out a function fault finding check.
Check whether configuration LC029 Selective unlocking of opening elements is
WITH.
Reconfigure using command CF036 Selective opening of opening elements, if
necessary.
To confirm the fault, use commands and AC004 Central door locking, AC005 Central door unlocking and
AC006 Unlocking by driver.
Apply the fault finding procedure associated with these commands.
If the fault is still present, contact the Techline.
AFTER REPAIRCarry out a complete check with the diagnostic tool.
UCH_V44_ALP36 /UCH_V48_ALP36/UCH_V4C_ALP36/
UCH_V4D_ALP36/UCH_V4F_ALP36/UCH_V50_ALP36
MR-372-J84-87B000$989mif
Page 362 of 391
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart
87B
87B -362
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart
87B
87B -362V9 MR-372-J84-87B000$989mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
*RAID: Renault Anti-Intruder Device.
*CPE: Electric central door locking.
ALP37 Renault Anti-Intruder Device operation fault (RAID*)
NOTESFirst carry out a function fault finding check.
Check that the Automatic locking when driving function is active using status ET043
RAID* function authorised by CPE*.
Make sure no door is detected open by the UCH.
Check the consistency of the vehicle speed signal.
Check for faults in the ABS system.
Check for faults in the airbag system.
If the fault is still present, contact the Techline.
AFTER REPAIRCarry out a complete check with the diagnostic tool.
UCH_V44_ALP37 /UCH_V48_ALP37/UCH_V4C_ALP37/
UCH_V4D_ALP37/UCH_V4F_ALP37/UCH_V50_ALP37
Page 364 of 391

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart
87B
87B -364
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart
87B
87B -364V9 MR-372-J84-87B000$989mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
ALP39 Accessories feed not activated
NOTESCheck the voltage of the battery.
Start the fault finding procedure with the ignition off and the vehicle locked.
When the vehicle is unlocked, the instrument panel should light up for a moment.
If not, carry out fault finding on the multiplex network and instrument panel.
Use Wiring Diagrams Technical Note for MEGANE II or SCENIC II.
The vehicle should switch to timed power (approximately 20 minutes) after the driver's door is opened (ET053
Driver's door).
If the timed supply is not triggered, try by:
–pressing the Start button (ET070 Start button), or
–turning on the hazard warning lights (ET085 "Hazard warning lights button"), or
–switching on the side lights (ET081 Lighting switch position).
If correct, run status fault finding for the faulty component.
If not correct, apply ALP No dialogue with the UCH.
The vehicle goes into accessories feed mode when the Start button is pressed (timed power active).
If it does not conform, check the operation of the Start button using status ET070 Start button and apply the fault
finding procedure associated with this status if necessary.
If the Start button operates correctly, use the fault finding procedure for status ET075 + accessories feed present.
Run fault finding and check the condition of the connectors of the + battery housing (Power fuses), of the power
board (maxi fuses), of the Protection and Switching Unit (UPC), of the Passenger Compartment Fuse and
Relay Box, of the Passenger Compartment Fuse and Relay Box option, and of the relay boards.
Check the condition and connection of the connectors on the UCH and the connectors on the UPC.
Check for + 12 V on connections BTP and 13AC of component 645.
Check for earth on connections 13E and NAM of component 645.
If one of the connectors is faulty and there is a repair procedure (see Technical Note 6015A, Electrical wiring
repair, Wiring: Precautions for repair), repair the connector, otherwise replace the wiring.
If the fault is still present, contact the Techline.
AFTER REPAIRCarry out a complete check with the diagnostic tool.
UCH_V44_ALP39 /UCH_V48_ALP39/UCH_V4C_ALP39/
UCH_V4D_ALP39/UCH_V4F_ALP39/UCH_V50_ALP39
Page 371 of 391

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart
87B
87B -371
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart
87B
87B -371V9 MR-372-J84-87B000$989mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
ALP46 Steering lock fails
NOTESCheck for any faults on the steering lock.
Check the battery voltage. It should be between 9 V and 16 V.
Check the validity of parameter PR008 "Vehicle speed".
Check for any faults in the Airbag computer (impact detected) and ABS/ESP
computers.
Reminder: In hands-free mode, the steering column lock is locked as soon as the
ignition is switched off.
With the card in the reader, the steering column lock is locked after the ignition is
switched off as soon as the card is removed from the reader.
The conditions for a drop in + after ignition feed without the steering column locking are:
–the card is present in the card reader,
–over 20 minutes passing with the card in the card reader after the engine has stopped,
–the vehicle speed is not zero,
–power being requested by the steering column lock too frequently.
With regard to vehicles fitted with UCH computer Vdiag 4F or above:
–the Renault card is removed from the card reader when the vehicle is in forced + after ignition feed,
–3 mins have elapsed following a starting failure due to an engaged gear,
–the Renault card is removed from the card reader following a starting failure due to an engaged gear,
–a front door is open following a starting failure due to an engaged gear and the card is not in the reader.
Check that these conditions are not present.
Check the consistency of statuses ET072 Steering column lock and ET073 Steering column lock signal.
In the event of a fault, see the procedure for these statuses in the UCH section.
Check that the steering column lock belongs to the vehicle using status ET248 Steering column lock immobiliser
code.
If the fault is still present, contact the Techline.
AFTER REPAIRCarry out a complete check with the diagnostic tool.
UCH_V44_ALP46 /UCH_V48_ALP46/UCH_V4C_ALP46/
UCH_V4D_ALP46/UCH_V4F_ALP46/UCH_V50_ALP46