run flat RENAULT SCENIC 2008 J84 / 2.G Passenger Comparment Connection Unit Workshop Manual

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-27
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-27V9 MR-372-J84-87B000$086.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
1.2.4 Renault card check by the UCH:
a/ Card check:
When the engine is running, the UCH checks for the presence of the Renault card in the passenger compartment (if
vehicle is hands-free) or in the card-reader when a door is opened then closed. If the Renault card is not detected, a
message on the instrument panel and a buzzer warn the driver.
Command AC036 Internal aerial test is used to check the area covered by the starting aerials inside the passenger
compartment (hands-free vehicles). The card reader flashes when the card is detected.
This command allows a hands-free card to be recognised even if it does not belong to the vehicle.
b/ Low battery warning:
If the Renault card battery is faulty or flat, the change card battery message is displayed on the instrument panel
when the vehicle is started, if there have been 5 attempts to authenticate the Renault card since the battery fault.
c/ Storing information on the card:
A device allowing information relating to the vehicle to be read from the card is available.
Information available: – VIN (Vehicle Identification Number).
–Mileage.
–Fuel level.
–Mileage before oil change.
–Tyre pressure (if vehicle fitted with SSPP).
–Status of OBD warning light.
–Oil level.
2.5 Immobiliser warning light programs
Immobiliser warning light Vehicle protection status
Ignition
offWarning light flashes slowlyVehicle protected (immobiliser active or fault with
steering lock)
Warning light not lit New vehicle or blank UCH storage mode
Ignition
onWarning light flashes slowly Renault card not recognised
Warning light continuously lit Injection authentication fault
Warning light not lit Vehicle unprotected (immobiliser inactive)

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-47
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-47V9 MR-372-J84-87B000$129.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
SYSTEM OPERATION
–The valves are activated approximately 1 minute after the vehicle has been running at a speed above 12 mph
(20 km/h).
–During driving, the valves emit signals every minute.
–The valves remain active for 15 minutes after the vehicle stops, then switch to standby mode.
–In standby mode, the valves emit signals only if they detect a pressure difference between two successive
measurements exceeding 68 mbar or if the pressure difference since last emitting exceeds 68 mbar (due to tyre
cooling).
–The tyres are considered to be cold when the vehicle speed has been zero for 1h 45 min.
–The minimum time for detection of a leak is approximately 15 minutes.
–The message Inflate tyres for motorway is displayed only if the vehicle travels at more than 102 mph (170 km/
h) (as an indication) for 3 minutes and the pressure on at least one of the tyres is 400 mbar less than the
recommended pressure at low speed. This message is inactive if the tyres are inflated to motorway pressure,
irrespective of the vehicle speed.
–Alert thresholds:
–over-inflation when cold = recommended pressure + 700 mbar,
–over-inflation when hot = recommended pressure + 850 mbar,
–under-inflation = recommended pressure - 400 mbar,
–serious under-inflation = recommended pressure - 600 mbar,
–imbalance = difference in pressure between the left-hand and right-hand wheels on the same axle greater
than 500 mbar.
–Information messages for the driver:
–Stop! Tyre puncture + STOP warning light + wheel concerned is highlighted on instrument panel display +
buzzer.
–Adjust tyre pressure + the wheel concerned is highlighted on instrument panel display.
–Inflate tyres for motorway + four wheels highlighted on instrument panel display.
–Tyre sensor fault + the wheel concerned is erased.
–Electronic fault + "Service" warning light + the four wheels concerned disappear from the instrument panel
display.
–No display of the tyre inflation pressure on the instrument panel on MEGANE II.

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Configurations and programming
87B
87B-66
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Configurations and programming
87B
87B-66V9 MR-372-J84-87B000$215.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
The UCH configurations performed in accordance with the vehicle's equipment level are configured using
the CLIP tool:
Configuration
readingConfigurationName of
configurationChoice of
configurationVdiag
LC001Hands-free functionSC008 UCH typeWITH/WITHOUT44, 48, 4C, 4D, 4F
and 50
LC002External temperature
sensorCF029WITH/WITHOUT 4C, 4D, 4F and 50
LC003DeadlockingCF009WITH/WITHOUT44, 48, 4C, 4D, 4F
and 50
LC004One-touch window(s)SC008 UCH typeWITH/WITHOUT 4C and 4D
LC005Gearbox typeCF011Manual/
Automatic44, 48, 4C, 4D, 4F
and 50
LC006Rain detectorSC008 UCH typeWITH/WITHOUT 44, 48, 4C, 4D
LC007Light sensorSC008 UCH typeWITH/WITHOUT 44, 48, 4C, 4D
LC008Daytime running lightsCF014WITH/WITHOUT44, 48, 4C, 4D, 4F
and 50
LC009Hazard warning lights
illuminated upon impactAutomatic
configurationWITH/WITHOUT 44, 48, 4C, 4D
LC010Tyre type Run flat tyreSC008 UCH typeWITH/WITHOUT44, 48, 4C, 4D, 4F
and 50
LC011Vehicle typeSC008 UCH typeCabriolet/3-door/
All except E and
C44, 48, 4C, 4D
LC012Automatic relockingCF018WITH/WITHOUT 44, 48, 4C, 4D
LC013Type of air conditioningSC008 UCH typeHeating/
Automatic/
Manual 44, 48, 4C, 4D, 4F
and 50
LC014Type of driving styleCF020LEFT-HAND/
RIGHT-HAND 44, 48, 4C, 4D, 4F
and 50
LC015Front fog lightsCF021WITH/WITHOUT44, 48, 4C, 4D, 4F
and 50
LC016Valet card functionSC008 UCH type WITH/WITHOUT 4C, 4D, 4F and 50

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
87B
87B -146
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
87B
87B -146V9 MR-372-J84-87B000$473.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
ET016
BUZZER ACTIVATION REQUEST
NOTESThere must be no present or stored faults.
Special note:
Status ET016 is STATUS 1 or STATUS 2 if the SSPP buzzer is activated. A tyre is
punctured or there is a severe under-inflation.
ET016 is STATUS 1.
Request for activation of the buzzer linked to display of a puncture warning message on the instrument panel.
Adjust the pressures of the four tyres to the recommended pressures. Repair or replace the tyre if necessary.
ET016 is STATUS 2.
Request for buzzer activation to warn the driver that the vehicle speed is too high when the vehicle has one or more
punctured tyres.
This signal is only valid for vehicles fitted with runflat tyres.
Adjust the pressures of the four tyres to the recommended pressures. Repair or replace the tyre if necessary.
AFTER REPAIRCarry out another fault finding check on the system.
Clear the stored faults.
Deal with any other faults.
UCH_V44_ET016/UCH_V48_ET016/ UCH_V4C_ET016/
UCH_V4D_ET016 /UCH_V4F_ET016/UCH_V50_ET016

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart
87B
87B -367
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart
87B
87B -367V9 MR-372-J84-87B000$989mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
ALP42The vehicle does not start, the after ignition feed fails in hands-
free mode but works with the card in the card reader
NOTESFirst carry out a function fault finding check.
Test with the other card.
Switching to + accessories feed should work.
If not deal with ALP39 Accessories feed not activated first.
Check that the start-up conditions are met:
Check that the tailgate is detected as closed by the UCH using status ET050 Tailgate/
Boot.
Carry out the tests with the other cards allocated to the vehicle.
The card may be inhibited or the vehicle was not unlocked electrically: unlock by pressing the card button and
check if the hands-free starting fault is still present.
If the hands-free starting fault affects only one card:
Check that the card battery has been inserted the right way round. If the battery is flat or an incorrect model is being
used, replace the battery. If not, replace the faulty card.
If the hands-free starting fault affects every card:
Make sure the UCH is properly configured for hands-free operation. Reconfigure if necessary.
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 are incorrectly configured, 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.
If the vehicle is fitted with a tyre pressure monitor (Scénic II only), check that the external UCH aerial is correctly
connected.
Run command AC036 Interior aerial test and check the card coverage zone.
The card reader starts to flash as soon as a card is detected in the coverage zone.
The card should not be detected by the internal aerials when it is outside the vehicle.
If not correct, apply the relevant fault finding procedure for each command.
This mode allows of a Mégane hands-free type card to be detected as present, but not recognised.
Check the part number of the UCH and that it is hands-free.
If the fault is still present, contact the Techline.
AFTER REPAIRCarry out a complete check with the diagnostic tool.
UCH_V44_ALP42 /UCH_V48_ALP42/UCH_V4C_ALP42/
UCH_V4D_ALP42/UCH_V4F_ALP42/UCH_V50_ALP42