ESP RENAULT SCENIC 2008 J84 / 2.G Passenger Comparment Connection Unit User Guide

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-65
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Configurations and programming
87B
87B-65V9 MR-372-J84-87B000$215.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
9) CONFIGURATION PROCEDURE FOR THE TYRE PRESSURE MONITOR FUNCTION (CF023)
10) INSTRUMENT PANEL CONFIGURATION PROCEDURE (CF145)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 then line CF023, then With or Without.
●Confirm the selection.
●Check that sure the configuration has been properly stored by checking the Read configuration menu at line
LC017 Tyre pressure monitor function.
IMPORTANT:
CONFIGURATION INCONSISTENCY BETWEEN THE INSTRUMENT PANEL AND UCH
1st case–The instrument panel detects that the tyre pressure monitor is programmed in the UCH but
not its proper configuration. The message ELECTRONIC FAULT appears, then the
4 wheels disappear on the instrument panel display, and the Service warning light comes
on.
2nd 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 FAULT will appear, the four wheels
will disappear from the instrument panel display and the Service warning light will come
on.
CF145:
TYRE PRESSURE MONITOR
●After the multiplex network test, select Instrument panel.
●Select Repair mode.
●Select Write configuration.
●Select line CF145, then With or Without.
●Confirm the selection.
●Check that the configuration has been properly stored in the Read configuration menu at line LC056 Tyre
pressure monitor.

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
87B
87B-72
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
87B
87B-72V9 MR-372-J84-87B000$301.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
DF002
PRESENT
STEERING LOCK
1.DEF: Steering lock internal electronic fault
2.DEF: Steering column lock internal electronic fault
3.DEF: Mechanical fault on column
4.DEF: Steering column lock authentication fault
5.DEF: Steering column lock authentication fault
6.DEF: UCH internal electronic fault
7.DEF: Steering column lock internal electronic fault
8.DEF: Steering column lock internal electronic fault
NOTESPriorities when dealing with a number of faults:
Firstly, deal with fault DF029 Steering column lock circuit, if it is present.
Special notes:
Attempt to apply forced + after ignition feed to update the faults.
1.DEF
NOTESAttempt to apply forced + after ignition feed to update the
faults.
If the fault is still present, replace the steering column lock.
2.DEF
NOTESAttempt to apply forced + after ignition feed to update the
faults.
Make another attempt to lock/unlock the column.
If the fault is still present, replace the steering column lock.
AFTER REPAIRCarry out another fault finding check on the system.
Clear the stored faults.
Deal with any other faults.
UCH_V44_DF002P/UCH_V48_DF002P/UCH_V4C_DF002P/
UCH_V4D_DF002P/UCH_V4F_DF002P /UCH_V50_DF002P

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
87B
87B-74
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
87B
87B-74V9 MR-372-J84-87B000$301.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
DF002
CONTINUED 2
6.DEF
NOTESAttempt to apply forced + after ignition feed to update the
faults.
Make another attempt to lock/unlock the column.
If the fault is still present, replace the UCH.
7.DEF
NOTESAttempt to apply forced + after ignition feed to update the
faults.
If the vehicle is fitted with a Vdiag 0F ABS computer, or a Vdiag 0B or Vdiag 11 ABS/ESP computer: establish
dialogue with the ABS or ABS/ESP computer and verify that PR020 Vehicle speed on initialisation is correctly
configured. If the configuration is incorrect, use command VP032 Vehicle speed on initialisation to reconfigure
the ABS or the ABS/ESP.
Make five attempts to start and lock the column.
If the fault is still present, replace the steering column lock.
8.DEF
NOTESAttempt to apply forced + after ignition feed to update the
faults.
Deal with DF029 Steering column lock circuit first.
If the fault is still present, replace the steering column lock.
AFTER REPAIRCarry out another fault finding check on the system.
Clear the stored faults.
Deal with any other faults.

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
87B
87B-78
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
87B
87B-78V9 MR-372-J84-87B000$301.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
DF006
DF007
DF008
DF009
PRESENTFRONT LEFT-HAND WHEEL VALVE SENSOR
FRONT RIGHT-HAND WHEEL VALVE SENSOR
REAR RIGHT-HAND WHEEL VALVE SENSOR
REAR LEFT-HAND WHEEL VALVE SENSOR
2.DEF: Sensor internal electronic fault
3.DEF: Sensor internal electronic fault
4.DEF: Sensor internal electronic fault
5.DEF: Sensor internal electronic fault
6.DEF: Sensor internal electronic fault
7.DEF: Sensor internal electronic fault
8.DEF: Sensor internal electronic fault
1.DEF: No sensor signal.
NOTESSpecial notes:
Any operation involving the replacement of a valve, or the removal of a tyre requires
perfect knowledge of the precautions (see MR 364 (Mégane II) or MR 370 (Scénic II),
Mechanical, 35A, Wheels and tyres).
Before any operation, ensure that all the wheels have tyre pressure monitoring valves,
and that the spare wheel has not been fitted.
For faults DF006 to DF009, if the fault is present during the first few kilometres, reprogram the 4 valves.
In the event of a programming failure, replace the valve concerned (see MR 364 (Mégane II) or MR 370
(Scénic II), Mechanical, 35B, Tyre pressure monitor system)
Check that there are no wheels with rubber valves. If there are, replace them with wheels with a valve fitted with
a sensor and carry out a road test.
If the fault is still present, program the 4 valves.
If the fault is still present, replace the valve (see MR 364 (Mégane II) or MR 370 (Scénic II), Mechanical, 35B,
Tyre pressure monitor system).
The correspondence between fault numbers and the valve concerned is described below:
–DF006 Front left-hand wheel valve sensor,
–DF007 Front right-hand wheel valve sensor,
–DF008 Rear right-hand wheel valve sensor,
–DF009 Rear left-hand wheel valve sensor.
Once the sensor has been replaced, program the four valve codes according to procedure SC002 Programming
the four valve codes (see Configurations and programming).
AFTER REPAIRCarry out another fault finding check on the system.
Clear the stored faults.
Deal with any other faults.
UCH_V44_DF006P/UCH_V44_DF007P/UCH_V44_DF008P/UCH_V44_DF009P/UCH_V48_DF006P/UCH_V48_DF007P/UCH_V48_DF008P/
UCH_V48_DF009P/UCH_V4C_DF006P/UCH_V4C_DF007P/UCH_V4C_DF008P/UCH_V4C_DF009P/UCH_V4D_DF006P/
UCH_V4D_DF007P/UCH_V4D_DF008P/UCH_V4D_DF009P/UCH_V4F_DF006P/UCH_V4F_DF007P/UCH_V4F_DF008P/
UCH_V4F_DF009P/UCH_V50_DF006P/UCH_V50_DF007P/UCH_V50_DF008P/UCH_V50_DF009P

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
87B
87B-114
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
87B
87B-114V9 MR-372-J84-87B000$344.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
DF147
PRESENT
STEERING COLUMN LOCK SAFETY CIRCUIT
NOTESPriorities when dealing with a number of faults:
Deal with fault DF029 Steering column lock circuit first if it is present.
Special note:
Attempt to apply forced + after ignition feed to update the faults.
Use Wiring Diagrams Technical Note for MEGANE II or SCENIC II.
Check the condition and connection of the steering column lock connector.
If the connector is faulty and if there is a repair procedure (see Technical Note 6015A, Repairing electrical
wiring, Wiring: Precautions for repair), repair the connector; otherwise, replace the wiring.
Check the condition and connection of the UCH PE1 and PP2 connectors.
If the connector(s) is faulty and if there is a repair procedure (see Technical Note 6015A, Repairing electrical
wiring, Wiring: Precautions for repair), repair the connector, otherwise replace the wiring.
Check the insulation and continuity of the following connections:
●Connection code 26I.
●Connection code 26J.
Between components 645 and 1088.
If the connection(s) is faulty and there is a repair procedure (see Technical Note 6015A, Electrical wiring repair,
wiring: precautions for repair), repair the wiring, otherwise replace it.
Check the continuity and insulation of the following connection:
●Connection code NAM between component 1088 and earth.
If the connection is faulty and there is a repair method (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the wiring, otherwise replace it.
If the fault is still present, replace the UCH.
AFTER REPAIRCarry out another fault finding check on the system.
Clear the stored faults.
Deal with any other faults.
UCH_V44_DF147P/UCH_V48_DF147 P/UCH_V4C_DF147P/
UCH_V4D_DF147P/UCH_V4F_DF147P/UCH_V50_DF147P

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Conformity check
87B
87B -130
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Conformity check
87B
87B -130V9 MR-372-J84-87B000$387.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
FUNCTION: TYRES
Sub-function: Tyre approval
NOTESOnly carry out this conformity check after a complete check with the diagnostic tool
(fault reading and configuration checks).
Application condition: engine stopped, + after ignition feed present.
Sub-functionParameter or
Status
checked Action Display and Notes Fault finding
Tyre receiver ET040:Tyre pressure
monitoring systemNOT WORKING
ACTIVE If status ET040 is OUT OF
ORDER, consult the fault
finding procedure for status
ET040.
ET032:Front left-hand
wheel valve signalOK
ABSENT
OVER-INFLATED
PUNCTURE
UNDER-INFLATEDCheck that the tyre pressure is
at the recommended pressure
(see MR 364 (Mégane II) or
MR 370 (Scénic II),
Mechanical, 35A, Tyre
pressure: Identification).
If status ET032 is not OK,
consult the fault finding
procedure for status ET032.
PR003:Front left-hand
wheel pressure0 bar < X < 3.55 barIf X = 0 bar, consult the fault
finding procedure for parameter
PR003.
Check that the recommended
pressure (PR009 to PR012)
corresponds correctly to the
vehicle.
PR019:Front left-hand tyre
temperature- 40ºC normal that the temperature is
50˚C and the pressure is 0 bar.
Perform a road test so that the
sensor emits the actual
temperature and pressure.
ET0033:Front right-hand
wheel valve signalOK
ABSENT
OVER-INFLATED
FLAT
UNDER-INFLATEDCheck that the tyre pressure is
at the recommended pressure
(see MR 364 (Mégane II) or
MR 370 (Scénic II),
Mechanical, 35A, Tyre
pressure: Identification).
If status ET033 is not OK,
consult the fault finding
procedure for status ET033.

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Conformity check
87B
87B -131
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Conformity check
87B
87B -131V9 MR-372-J84-87B000$387.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
FUNCTION: TYRES
Sub-function: Tyre approval (continued 1)
NOTESOnly carry out this conformity check after a complete check with the diagnostic tool
(fault reading and configuration checks).
Application condition: engine stopped, + after ignition feed present.
Sub-functionParameter or
Status
checked Action Display and Notes Fault finding
Tyre approval PR004:Front right-hand
wheel pressure0 bar < X < 3.55 barIf X = 0 bar, consult the fault
finding procedure for parameter
PR004.
Check that the recommended
pressure (PR009 to PR012)
corresponds correctly to the
vehicle.
PR020:Front right-hand tyre
temperature- 40ºC normal that the temperature is
50˚C and the pressure is 0 bar.
Perform a road test so that the
sensor emits the actual
temperature and pressure.
ET034:Rear right-hand
wheel valve signalOK
ABSENT
OVER-INFLATED
FLAT
UNDER-INFLATEDCheck that the tyre pressure is
at the recommended pressure
(see MR 364 (Mégane II) or
MR 370 (Scénic II),
Mechanical, 35A, Tyre
pressure: Identification).
If status ET034 is not OK,
consult the fault finding
procedure for status ET034.
PR005:Rear right-hand
wheel pressure0 bar < X < 3.55 barIf X = 0 bar, consult the fault
finding procedure for parameter
PR005.
Check that the recommended
pressure (PR009 to PR012)
corresponds correctly to the
vehicle.
PR021:Rear right-hand tyre
temperature- 40ºC normal that the temperature is
50˚C and the pressure is 0 bar.
Perform a road test so that the
sensor emits the actual
temperature and pressure.

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Conformity check
87B
87B -132
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Conformity check
87B
87B -132V9 MR-372-J84-87B000$387.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
FUNCTION: TYRES
Sub-function: Tyre approval (continued 2)
NOTESOnly carry out this conformity check after a complete check with the diagnostic tool
(fault reading and configuration checks).
Application condition: engine stopped, + after ignition feed present.
Sub-functionParameter or
Status
checked Action Display and Notes Fault finding
Tyre approval ET035:Rear left-hand
wheel valve signalOK
ABSENT
OVER-INFLATED
FLAT
UNDER-INFLATEDCheck that the tyre pressure is
at the recommended pressure
(see MR 364 (Mégane II) or
MR 370 (Scénic II),
Mechanical, 35A, Tyre
pressure: Identification).
If status ET035 is not OK,
consult the fault finding
procedure for status ET035.
PR006:Rear left-hand
wheel pressure0 bar < X < 3.55 barIf X = 0 bar, consult the fault
finding procedure for parameter
PR006.
Check that the recommended
pressure (PR009 to PR012)
corresponds correctly to the
vehicle.
PR022:Rear left-hand tyre
temperature- 40ºC normal that the temperature is
50˚C and the pressure is 0 bar.
Perform a road test so that the
sensor emits the actual
temperature and pressure.

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
87B
87B -153V9 MR-372-J84-87B000$473.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
ET026
HEATED REAR SCREEN CONTROL
NOTESThere must be no present or stored faults.
Special note:
Operation of the heated rear screen requires the engine status to be Running.
ET026 Inactive despite a rear de-icing request by the user.
Air conditioning
Manual
Climate control
Verify that status ET142 Engine operating phase is Running; otherwise, carry out
fault finding on the injection system.
Check that status ET028 Heated rear screen switch is PRESSED, otherwise refer
to the interpretation of this status.
If the fault is still present, contact your Techline.
Verify that status ET142 Engine operating phase is Running; otherwise, carry out
fault finding on the injection system.
If the fault is still present, carry out a fault finding procedure on the air conditioning
computer.
If the fault is still present, contact your Techline.
AFTER REPAIRCarry out another fault finding check on the system.
Clear the stored faults.
Deal with any other faults.
UCH_V44_ET026/UCH_V48_ET026/ UCH_V4C_ET026/
UCH_V4D_ET026 /UCH_V4F_ET026/UCH_V50_ET026