2006 RENAULT SCENIC light

TYRE PRESSURE MONITOR
Fault finding - Introduction
35B
35B-3
UCH
Program no.: 350 and higher
Vdiag No: 48-4C-4D-4F-50
To cut off + after ignition, proceed as follows:
–Disconnect the diagnostic tool.
–Press the Start button twice briefly (less than 3 seconds),
–See that the + after ignition feed has been cut off by checking that the computer warning lights on the
instrument panel have gone out.
Faults
The current status of faults must be considered when the diagnostic tool is used following switching to + after
ignition (with no action on the system components).
For a present fault, handle the fault according to the procedure listed in the section on Interpretation of faults in
Workshop Repair Manual 372 Section 87B Passenger compartment connection unit.
There is no stored fault on the tyre pressure monitor.
Conformity check
The aim of the conformity check is to check statuses and parameters that do not produce a fault display on the
diagnostic tool when they are inconsistent. Therefore, this stage is used to:
–carry out fault finding on faults that do not have a fault display, and which may correspond to a customer
complaint.
–check that the system is operating correctly and that there is no risk of a fault recurring after repairs.
This section features the fault finding procedure for statuses and parameters, and the conditions for checking them.
If a status is not operating normally or a parameter is outside permitted tolerance values, you should consult the
corresponding fault finding page.
Customer complaints - Fault finding chart
If the check using the diagnostic tool is satisfactory but the customer complaint is still present, the fault should be
treated as a customer complaint.
A summary of the overall procedure to follow is provided on the following page
in the form of a flow chart.
Edition 4

List of monitored parts: Computer, valves, receivers
FAULT FINDING LOG
System: Tyre Pressure MonitorPage 1 / 2
●Administrative identification
Date 2 0
Log completed by
VIN
Engine
Diagnostic tool CLIP
Update version
●Customer complaint
1794 Tyre Pressure Monitor
orange warning light flashing:
text or icon
1797 Tyre Pressure Monitor
orange warning light lit
continuously: text or icon
1795 Puncture red warning light
lit: text or icon

1798 No pressure display 1796 Faulty display
1793 Wheels disappear from the display 1792 Wheels flashing on the display
OtherYour comments: (specify the tyre affected by the customer complaint):
●Conditions under which the customer complaint occurs
001 When cold 002 When warm 003 When stationary
004 Intermittently 005 While driving 009 Sudden fault
011 When ignition is switched on
OtherYour comments:
●
Documentation used in fault finding
Fault finding procedure used
Type of fault finding manual:Workshop Repair Manual: Technical Note Assisted fault finding
ALP followed: no...
Fault finding manual no:
Wiring diagram used
Wiring Diagram Technical Note No:
Other documentation
Title and/or part number:
FD 23
Fault finding log
page to print or photocopy - page to print or photocopy - page to print or photocopy

TYRE PRESSURE MONITOR
Fault finding - System operation
35B
UCH
Program no.: 350 and higher
Vdiag No: 48-4C-4D-4F-50
System operation:
–The valves are activated after driving at a speed greater than 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 greater than 68 mbar or if the pressure difference since last emitting is greater than 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 Pressure unsuitable for the speed is activated 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-inflated while cold =recommended pressure + 700 mbar
–over-inflated while warm = recommended pressure + 850 mbar
–under-inflated = recommended pressure - 400 mbar
–very under-inflated = recommended pressure - 600 mbar
–imbalance = difference in pressure between the left-hand and right-hand wheels on the same axle greater
than 500 mbar
–Tyre pressure monitor information messages for the driver:
–"PUNCTURE: CHANGE TYRE" + STOP warning light + highlighting of the wheel concerned on the
instrument panel display + buzzer.
–"ADJUST TYRE PRESSURE" + highlighting of the wheel concerned on the instrument panel.
–"INFLATE TYRES MOTORWAY" + highlighting of all four wheels on the instrument panel.
–"TYRE SENSOR INOPERATIVE" + clearing of the wheel concerned.
–"ELECTRONIC FAULT" + "Service" warning light + the wheels concerned disappear from the
instrument panel.
–Tyre pressure monitor information messages for a puncture with the PAX System:
–"PUNCTURE: REPAIR TYRE" + highlighting of the wheel concerned on the instrument panel.
–"PUNCTURE: SLOW DOWN" + buzzer (if vehicle speed > 48 mph (80 km/h)).
–"DRIVING WITH FLAT: X MILES REMAINING" (X decreases from 120 miles (200 km) to 0) + STOP
warning light when X = 0 + highlighting of the wheel concerned on the instrument panel.
⇒
No instrument panel display of tyre pressure on the SCENIC II.
Edition 435B-10

TYRE PRESSURE MONITOR
Fault finding - Configurations and programming
35B
UCH
Program no.: 350 and higher
Vdiag No: 48-4C-4D-4F-50
CF023:
TYRE PRESSURE MONITOR FUNCTION
(in programming command SC008 UCH type)
WRITING THE CONFIGURATION WITH OR WITHOUT TYRE PRESSURE MONITOR:
–Select the repair mode menu.
–Select the Programming menu
Select line SC008 UCH type, then the line CF023 Tyre Pressure Monitor function then with or without
Confirm the selection.
Check that the configuration has been stored correctly.
IMPORTANT
CONFIGURATION INCONSISTENCY BETWEEN THE INSTRUMENT PANEL AND UCH
1
st case: If the instrument panel detects the tyre pressure monitor system programmed in the UCH but
not in its own configuration. The message ELECTRONIC FAULT appears, the four wheels
disappear on the instrument panel display, and the Service warning light comes on.
2
nd case: The instrument panel detects that the Tyre pressure monitor is programmed in its own
configuration but the UCH fails to respond to any requests from the instrument panel (not
configured in UCH). The message TYRE SENSOR INOPERATIVE will appear, the four wheels
will disappear from the instrument panel display and the Service warning light will come on.
Edition 435B-16

TYRE PRESSURE MONITOR
Fault finding - Conformity check
35B
UCH
Program no.: 350 and higher
Vdiag No: 48-4C-4D-4F-50
NOTESOnly check conformity after a complete check using the diagnostic tool.
Test conditions: Engine switched off, after ignition feed on, tyres inflated to correct
pressure.
Order Sub-functionParameter or Status
checked or ActionDisplay and notes Fault finding
1 (con-
tinued)Tyre receiverET032:Front left-hand
wheel valve
signalOK, if the valve sends the
right signal and the
pressure is correct.Check that the tyre
pressures are those
recommended in the
Workshop Repair Manual
Section 35
Specifications.
If statuses ET032 to
ET035 are not OK, see
the interpretation of
statuses ET032 to ET035. ET033:Front right-hand
wheel valve
signal
ET034:Rear right-hand
wheel valve
signal
ET035:Rear left-hand
wheel valve
signal
PR003:Front left-hand
wheel pressureX = Tyre pressure. If X = 0 bar, see the
interpretation of
parameters PR003 to
PR006.
Ensure that the
recommended pressure
values (PR009 to PR012)
are correct for your
vehicle.
Following a battery cut-off,
it is normal that all
temperature values
should be 50 °° ° °
C and
pressure values 0 bar.
Perform a road test so that
the valves emit their true
temperature and pressure
values.
It may be that the
temperatures of all the
tyres are not exactly the
same, depending on the
load distribution and
whether or not they are
exposed to sunlight. PR004:Front right-hand
wheel pressure
PR005:Rear right-hand
wheel pressure
PR006:Rear left-hand
wheel pressure
PR019:Front left-hand
tyre temperatureX = Tyre air temperature
PR020:Front right-hand
tyre temperature
PR021:Rear right-hand
tyre temperature
PR022:Rear left-hand
tyre temperature
Edition 435B-19

TYRE PRESSURE MONITOR
Fault finding - Conformity check
35B
UCH
Program no.: 350 and higher
Vdiag No: 48-4C-4D-4F-50
NOTESOnly check conformity after a complete check using the diagnostic tool.
Test conditions: Engine switched off, after ignition feed on, tyres inflated to correct
pressure.
Order Sub-functionParameter or Status
checked or Action Display and notes Fault finding
2 (con-
tinued)Tyre
managementPR015:Slight under-
inflation threshold- 0.4 bar
None PR059:Puncture report
threshold- 0.6 bar
PR017:Cold over-inflation
threshold0.7 bar
PR018:Warm over-inflation
threshold0.8 bar
PR016:Driving range
following punctureX Km
X = 120 miles
(200 km) if no tyre
puncture is
detected.X = Mileage remaining
following a tyre puncture.
Edition 435B-21

TYRE PRESSURE MONITOR
Fault finding - Conformity check
35B
UCH
Program no.: 350 and higher
Vdiag No: 48-4C-4D-4F-50
NOTESOnly check conformity after a complete check using the diagnostic tool.
Test conditions: Engine switched off, after ignition feed on, tyres inflated to correct
pressure.
Order Sub-functionParameter or Status
checked or Action Display and notes Fault finding
3Tyre displayET038:Request lighting of
Service warning
light (only for PAX
System)INACTIVEACTIVE, if a puncture is
detected.
If the pressure of all tyres
is correct, perform fault
finding on the other
computers.
ET039: STOP warning light
requestINACTIVEACTIVE, if a puncture is
detected (without PAX
System) or at the end of
the driving range following
a puncture (with PAX
System).
ET016:Buzzer activation
requestINACTIVE, if the
Tyre Pressure
Monitor system
functions normally
and tyre pressure is
correct.There is a buzzer
activation request for all
severity level 1 warnings
(puncture). The buzzer
emits a single beep when
a fault occurs.
STATUS 1:
Request for buzzer
activation when a
puncture is detected.
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
information is only valid on
vehicles fitted with PAX
System tyres.
Edition 435B-22

TYRE PRESSURE MONITOR
Fault finding - Customer complaints
35B
UCH
Program no.: 350 and higher
Vdiag No: 48-4C-4D-4F-50TYRE PRESSURE MONITOR
Fault finding - Customer complaints
NO DIALOGUE WITH THE UCH COMPUTER ALP 1
"READJUST TYRE PRESSURE" MESSAGE LIGHTS UP ALP 2
"ELECTRONIC FAULT" MESSAGE LIGHTS UP ALP 3
"TYRE SENSOR OUT OF ORDER" MESSAGE LIGHTS UP
with disappearance of a single wheel warning light ALP 4
with disappearance of the four wheel warning lights ALP 5
intermittent warning ALP 6
"PUNCTURE - CHANGE TYRE" MESSAGE LIGHTS UP ALP 7
Edition 435B-29