Page 2 of 37
TYRE PRESSURE MONITOR
ABBREVIATIONS
35B
35B-1
UCH
Program no.: 350 and higher
Vdiag No: 48-4C-4D-4F-50
135BTYRE PRESSURE MONITOR
ABBREVIATIONS
ABBREVIATIONS MEANING OF ABBREVIATION
ABSAnti-lock braking system
ALPFault Finding Chart
APCAfter ignition
AVCBefore ignition
BVAAutomatic gearbox
BVMManual gearbox
BVRSequential gearbox
CANController Area Network
ACAir conditioning
CDCompact disc
PASPower assisted steering (hydraulic)
EPASElectric power assisted steering
DVDDigital versatile disc
DTCFault finding code
EGRExhaust gas recirculation
ESPElectronic Stability Program
GMVMotor-driven fan assembly
CNGCompressed natural gas
LPGLiquefied petroleum gas
HLEHigh yield strength
MAGMetal active gas (for welding steel)
MIGMetal inert gas (for welding aluminium)
MRWorkshop repair manual
TNTechnical Note
OBDOn board diagnostics
SERResistance welding
SSPPTyre pressure monitoring system
THLEVery high yield strength
TMLabour time
UCHPassenger Compartment Unit
UPCProtection and Switching Unit
UCTRoof control unit
UHLEUltra high yield strength
VINVehicle identification number
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TYRE PRESSURE MONITOR
Fault finding - Conformity check
35B
UCH
Program no.: 350 and higher
Vdiag No: 48-4C-4D-4F-50TYRE PRESSURE MONITOR
Fault finding - Conformity check
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
1Tyre receiverET040:Tyre pressure
monitoring
systemACTIVE– In the event that
status ET040 is
INOPERATIVE, refer to
the interpretation of
status ET040.
ET037:Tyre pressure
appropriate for
speedYES, if the pressure is
appropriate for the
vehicle speed.– If status ET037 is NO,
consult the
interpretation of status
ET037.
PR008:Vehicle speedX = 0 (in km/h)If the vehicle speed signal
is incorrect, carry out fault
finding on the ABS.
ET036:Wheel
pressure
imbalanceNONE, if the pressures of
the two front-axle and two
rear-axle tyres are
balanced.
(pressure difference
between the two tyres on
the same axle < 0.5 bar)
⇒ Readjust the pressure.
– FRONT, if the
pressures of the two
front tyres are not
balanced.
– REAR, if the
pressures of the two
rear tyres are not
balanced.
– FRONT/REAR, if the
pressures of the two
front-axle and two rear-
axle tyres are not
balanced.
⇒ See the interpretation of
status ET036.
ET045:Radiofrequency
signal receivedNO– Status ET045
becomes YES when the
receiver integrated into
the UCH receives a
signal.
To check whether the
receiver is functioning
normally, carry out a door
locking request with the
card and check that the
status switches to YES.
SSPP_V48_CCONF/SSPP_V4C_CCONF/ SSPP_V4D_CCONF/SSPP_V4F_CCONF/SSPP_V50_CCONF
Edition 4
35B-18
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TYRE PRESSURE MONITOR
Fault finding - Interpretation of statuses
35B
UCH
Program no.: 350 and higher
Vdiag No: 48-4C-4D-4F-50
In the event that status ET040 is inoperative: ET040
TYRE PRESSURE MONITOR SYSTEM
NOTESBefore carrying out any operation, apply the fault finding procedure (see Introduction).
Check that no fault is present.
ACTIVE: If the four wheel valves transmit their signal and the signal is correctly received by the UCH.
INOPERATIVE: If a component is faulty or incorrectly configured.
Check in the configuration reading menu to ensure that configuration LC017 tyre pressure monitor has been
properly entered in the UCH. If this is not the case, start configuration in the "Programming" menu with
command CF023 Tyre pressure monitor, under SC008 UCH type.
Check that there is no ABS fault.
Use status ET045 RF signal received to check that the receiving aerial works correctly by trying central door
locking with the card at 4 to 5 metres to the rear right-hand of the vehicle.
If central door locking does not work, check aerial presence and positioning on the UCH.
If, after performing all these checks, no fault has been found and status ET040 is still Inoperative, contact
Techline.
AFTER REPAIRDeal with any other possible faults.
Switch off the ignition and carry out a road test followed by a test with the diagnostic
tool.
SSPP_V48_ET040/SSPP_V4C_ET040 /SSPP_V4D_ET040/SSPP_V4F_ET040 /SSPP_V50_ET040
Edition 4
35B-26
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TYRE PRESSURE MONITOR
Fault finding - Fault Finding Chart
35B
ALP 6"Tyre sensor inoperative" message lights up (disappearance of
one or both rear wheels, intermittent event)
NOTESCheck that all the faulty tyres are fitted with tyre pressure monitor valves.
Use status ET045 RF signal received to check
that the receiving aerial works correctly by
requesting central door locking with the card 4
to 5 metres to the rear of the vehicle, right-hand
side.
If central door locking does not work, check
receiving aerial presence, positioning and
connection on the UCH.
NO
Is the aerial correctly positioned and
connected?
YES
If the fault is still present, the UCH is faulty, and
you should contact the Techline.
Replace and reconnect the aerial on the UCH.
UCH
Program no.: 350 and higher
Vdiag No: 48-4C-4D-4F-50
AFTER REPAIRCarry out a complete check with the diagnostic tool.
35B-35
SSPP_V48_ALP06 /SSPP_V4C_ALP06/SSPP_V4D_ALP06/SSPP_V4F_ALP06/SSPP_V50_ALP06
Edition 4
