four wheel drive RENAULT SCENIC 2006 J84 / 2.G Tyre Pressure Monitoring Workshop Manual

TYRE PRESSURE MONITOR
Fault finding - Introduction
35B
35B-4
UCH
Program no.: 350 and higher
Vdiag No: 48-4C-4D-4F-50
4. FAULT FINDING PROCEDURE
Procedure to be carried out before entering fault finding mode with the tool:
–Are the faulty wheels equipped with tyre pressure monitor wheel sensors, or were they so at the time of
the fault?
–Check the position of the wheels on the vehicle (wheel sensor colour code). Put the wheels back in
position and program the codes of the four wheel sensors if the wheels are not in their original position.
–Check the wheel pressures with a pressure gauge. Do they correspond to the pressures noted inside
the door or in the driver's handbook for that size of tyres?
A summary of the overall procedure to follow is provided on the following page
in the form of a flow chart.
Edition 4

TYRE PRESSURE MONITOR
Fault finding - System operation
35B
UCH
Program no.: 350 and higher
Vdiag No: 48-4C-4D-4F-50TYRE PRESSURE MONITOR
Fault finding - System operation
SYSTEM COMPOSITION
The tyre pressure monitor system consists of the following components:
–four sensors (one on each wheel but not on the emergency spare wheel)
–a computer (UCH)
–a receiver aerial (17-cm bare wire connected to the UCH)
–an instrument panel display for the driver
In addition to these components, the PAX system is comprised of four special tyres with a support ring to allow flat
tyre driving following a puncture over a maximum distance of 120 miles (200 km), at a maximum speed of 48 mph
(80 km/h).
WARNING
It is forbidden to install PAX System tyres on a vehicle without PAX System tyres as standard.
Edition 435B-9

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 - System operation
35B
UCH
Program no.: 350 and higher
Vdiag No: 48-4C-4D-4F-50
SWAPPING WHEELS
Whenever wheels are swapped over, reprogram the new valve positions in the UCH using the diagnostic tool.
The coloured rings will then have to be placed back in the location marked on the label glued to the driver's door.
WINTER AND SUMMER TYRES
Upon leaving the factory, the summer set is configured in the UCH, but the customer can equip his vehicle with a set
of winter wheels (winter wheels = wheel rims + valves + specific tyres).
When the set of winter wheels is first installed, program the four valve codes.
When switching from one set of wheels to another, recognition is then automatic with no need for UCH operations.
Two or four winter wheels can be installed on the vehicle. But the codes for the four valves present on the vehicle
must be programmed in the winter set.Ring colours: Front left-hand wheel: green Front right-hand wheel: yellow
Rear left-hand wheel: red Rear right-hand wheel: black
Edition 435B- 11

TYRE PRESSURE MONITOR
Fault finding - Configurations and programming
35B
UCH
Program no.: 350 and higher
Vdiag No: 48-4C-4D-4F-50TYRE PRESSURE MONITOR
Fault finding - Configurations and programming
SC002:
PROGRAMMING THE FOUR VALVE CODES
IMPORTANT
Any repairs that involve replacement of a wheel sensor require knowledge of the recommendations
defined in Workshop Repair Manual 371 section 35.
–Inflate the four tyres to 3.8 bar.
–Using the diagnostic tool, establish dialogue with the UCH.
–Select the Repair mode menu
–Select the Programming menu
–Select line SC002 Programming the four valve codes under the Tyres function.
Display of stored codes and recognised valve set.
–Select the Valve set selection menu, then Summer or Winter.
–Confirm to obtain the table "valve programming conditions".
–Confirm by selecting next, which brings up the search for valve code menu.
–Excite each valve by holding the valve exciter on the tyre, just under the valve in question.
–Start with the front left-hand wheel.
–Wait for the new code to appear on the screen before moving on to the next valve.
–Program the codes in the following order:
Front left-hand Front right-hand Rear right-hand Rear left-hand
–Click on the "Confirm" button to transmit the codes to the UCH.
–Inflate the tyres to the recommended pressures.
–Carry out a road test: speed > 12 mph (20 km/h) for 10 minutes.
–Make sure no message appears on the instrument panel.
IMPORTANT
When swapping wheels over, reprogram the UCH for the new valve positions using the diagnostic tool and
programming the valve codes.
Then replace the colour rings in the locations noted on the label on the driver's door.
Edition 435B-14

TYRE PRESSURE MONITOR
Fault finding - Fault Finding Chart
35B
ALP 2"Adjust tyre pressure" message lights up (the wheel concerned
fills in on the display)
NOTESCheck that all the faulty tyres are fitted with tyre pressure monitor valves.
Check that the tyres are cold (vehicle immobilised for approximately 2 hours) and if not,
add 0.3 bar to the recommended pressures.
Make sure the tyre has the
recommended pressure as specified
on the label or in the driver's
handbook (not under- or over-
inflated).
Are the tyres at the recommended
pressures?
YES
Read the pressures under PR003 to
PR006
Do PR003 to PR006 match the
readings taken with a pressure
gauge (within 0.2 bar)?
NO
Check the tyre pressure with another
gauge.
Does the new reading indicate
dispersal by the first gauge?
YES
Adjust the tyre pressure, taking into
account the pressure gauge
variation.
Replace the faulty sensor(s).
AFTER REPAIRCarry out a complete check with the diagnostic tool.
UCH
Program no.: 350 and higher
Vdiag No: 48-4C-4D-4F-50
NO
Readjust the tyre pressures
Read the recommended
pressures in the UCH (PR009
to PR012)
Do the values of these
parameters match the
manufacturer's
recommended pressures?
YES
Program the four valve codes
and refit the coloured rings in
the positions indicated on the
label on the driver's side.
35B-31
YES
NO
NOWrite the
recommended
pressures with
command VP005
Enter
recommended
pressures.
SSPP_V48_ALP02 /SSPP_V4C_ALP02/SSPP_V4D_ALP02/SSPP_V4F_ALP02/SSPP_V50_ALP02
Edition 4

TYRE PRESSURE MONITOR
Fault finding - Fault Finding Chart
35B
ALP 3"Adjust tyre pressure" message lights up (two wheels fill in on
the display)
NOTESCheck that all the faulty tyres are fitted with tyre pressure monitor valves.
Is there a pressure
imbalance between the
left-hand and right-hand
tyre on the same axle?NO
YES
Adjust the tyre pressure to the
manufacturer's recommended
levels.
NO
Is the fault still present?End of fault finding
YES
Read the recommended
pressures in the UCH (PR009
to PR012).
Do the values of these
parameters match the
manufacturer's
recommended pressures?NO
YES
Contact the Techline.
Check the positions of the
coloured rings against the
label on the driver's side.
Have the front and rear
tyres been swapped?YES
NO
Write the recommended
pressures with command
VP005 Enter
recommended pressures.
UCH
Program no.: 350 and higher
Vdiag No: 48-4C-4D-4F-50
AFTER REPAIRCarry out a complete check with the diagnostic tool.
35B-32
Program the four valve
codes and refit the
coloured rings in the
position indicated on the
label on the driver's side.
SSPP_V48_ALP03 /SSPP_V4C_ALP03/SSPP_V4D_ALP03/SSPP_V4F_ALP03/SSPP_V50_ALP03
Edition 4