2008 RENAULT SCENIC Passenger Comparment Connection Unit Workshop Manual

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of parameters
87B
87B -241
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of parameters
87B
87B -241V9 MR-372-J84-87B000$688.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of parameters
PR001
BATTERY VOLTAGE
NOTESCheck that the battery terminals are correctly tightened.
Check the consistency between the battery voltage measurement from the multimeter and the value of PR004
Battery voltage.
Engine stopped: 11 V < X < 13.5 V.
Engine running: 10.5 V < X < 16 V.
If the voltage values are not consistent (greater than 0.3 V difference between the 2 values), check the connection
between the + battery feed and the Protection and Switching Unit.
If the values are consistent, run fault finding on the battery and charging circuit (see Technical Note 6014A,
Checking the charging circuit, 16A, Starting - Charging).
AFTER REPAIRCarry out another fault finding check on the system.
Clear the stored faults.
Deal with any other faults.
UCH_V44_PR001/UCH_V48_PR001/UCH_V4C_PR001 /
UCH_V4D_PR001/ UCH_V4F_PR001/UCH_V50_PR001
MR-372-J84-87B000$688.mif

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of parameters
87B
87B -242
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of parameters
87B
87B -242V9 MR-372-J84-87B000$688.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
PR002
EXTERNAL TEMPERATURE
NOTESUse Wiring Diagrams Technical Note for MEGANE II or SCENIC II.
Check the temperature sensor connector (e.g.: connector incorrectly connected, pins bent, broken, oxidised, etc.).
If the connector is faulty and if there is a repair method (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the connector; otherwise, replace the wiring.
Check the UCH connector (e.g.: connector incorrectly connected, pins bent, broken, oxidised, etc.).
If the connector is faulty and if there is a repair method (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the connector; otherwise, replace the wiring.
Check the continuity and insulation of the following connections:
●Connection code 47C.
●Connection code 47D.
Between components 645 and 245.
If the connection or connections are faulty and there is a repair procedure (see Technical Note 6015A, Electrical
wiring repair, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
Measure the sensor resistance on tracks 1 and 2.
Approximate temperature in ˚CSensor resistance in ΩΩ Ω Ω
Between 0 and 5 Between 5400 and 6200
Between 11 and 15 Between 3700 and 4400
Between 21 and 25 Between 2500 and 3000
Between 31 and 35 Between 1700 and 2100
Replace the sensor if necessary.
If the fault is still present, contact the Techline.
AFTER REPAIRCarry out another fault finding check on the system.
Clear the stored faults.
Deal with any other faults.
UCH_V44_PR002/UCH_V48_PR002/UCH_V4C_PR002 /
UCH_V4D_PR002/ UCH_V4F_PR002/UCH_V50_PR002

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of parameters
87B
87B -243
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of parameters
87B
87B -243V9 MR-372-J84-87B000$688.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
PR003
PR004
PR005
PR006FRONT LEFT-HAND WHEEL TYRE PRESSURE
FRONT RIGHT-HAND WHEEL TYRE PRESSURE
REAR RIGHT-HAND WHEEL TYRE PRESSURE
REAR LEFT-HAND WHEEL TYRE PRESSURE
NOTESThere must be no faults present.
Carry out this fault finding procedure after detecting a discrepancy in the parameter
displays.
When communication is established, the default value of the parameters is displayed (0 bar). By creating
a leak or using a road test, force each valve to transmit to discover the actual pressure levels measured
by the sensors during the fault finding procedure.
In all cases, compare whether the pressures displayed on the diagnostic tool correctly match the readings on the
pressure gauge (to within 0.2 bar).
If the readings do not correspond, you may encounter two possible scenarios:
1st case: The parameters still display 0 bar.
This means that the wheel valve codes do not correspond to the wheel set programmed into the UCH. (When the
UCH receives the valve codes, it will not recognise them because they do not correspond to the wheel set codes
already programmed, which are the only ones it will recognise). To rectify this:
Start the programming procedure using command SC002 Program the 4 valve codes (see Configurations and
programming).
2nd case: Parameters PR003 to PR006 display incorrect values (other than 0 bar).
If the pressures differ, there is a fault on the valve. Replace the faulty valve. Follow programming procedure: SC002
(see Configurations and programming).
After programming, repeat the fault finding procedure from the beginning.
AFTER REPAIRRepeat the check from the start.
UCH_V44_PR003/UCH_V48_PR003/UCH_V4C_PR003/UCH_V4D_PR003/UCH_V4F_PR003/UCH_V50_PR003/UCH_V44_PR004/
UCH_V48_PR004/UCH_V4C_PR004/UCH_V4D_PR004/UCH_V4F_PR004/UCH_V50_PR004/UCH_V44_PR005/UCH_V48_PR005/
UCH_V4C_PR005/UCH_V4D_PR005/UCH_V4F_PR005/UCH_V50_PR005/UCH_V44_PR006/UCH_V48_PR006/UCH_V4C_PR006/
UCH_V4D_PR006/UCH_V4F_PR006/UCH_V50_PR006

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of parameters
87B
87B -244
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of parameters
87B
87B -244V9 MR-372-J84-87B000$688.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
PR008
VEHICLE SPEED
NOTESNone.
Run complete fault finding on the ABS (See section 38C Anti-lock braking system) and on the Protection and
Switching Unit (see section 87B Passenger compartment connection unit).
If the fault is still present, contact the Techline.
AFTER REPAIRCarry out another fault finding check on the system.
Clear the stored faults.
Deal with any other faults.
UCH_V44_PR008/UCH_V48_PR008/UCH_V4C_PR008 /
UCH_V4D_PR008/ UCH_V4F_PR008/UCH_V50_PR008

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of parameters
87B
87B -245
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of parameters
87B
87B -245V9 MR-372-J84-87B000$688.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
* FR: Front
* RR: Rear
PR009
PR010
PR011
PR012FR* WHEEL LOW SPEED REC* PRESSURE
RR* WHEEL LOW SPEED REC* PRESSURE
RR* WHEEL HIGH SPEED REC* PRESSURE
FR* WHEEL HIGH SPEED REC* PRESSURE
NOTESThere must be no present or stored faults.
Carry out this fault finding procedure after detecting a discrepancy between the
pressures recommended by the manufacturer and those stored in the UCH.
Warning:
Use Workshop Repair Manual 364 (Mégane II) or 370 (Scénic II) or refer to the
pressure label attached to the driver's door to obtain the recommended pressures for
the tyres actually installed on the vehicle.
If, after comparing with the manufacturer's data (see MR 364 (Mégane II) or MR 370 (Scénic II), 35A), the
recommended pressures stored in the UCH do not conform, reprogram the recommended pressures using
command VP005 Enter recommended pressures (see Configurations and programming).
If the recommended pressures cannot be entered properly, contact Techline.
AFTER REPAIRRepeat the check from the start.
UCH_V44_PR009/UCH_V48_PR009/UCH_V4C_PR009/UCH_V4D_PR009/UCH_V4F_PR009/UCH_V50_PR009/UCH_V44_PR010/
UCH_V48_PR010/UCH_V4C_PR010/UCH_V4D_PR010/UCH_V4F_PR010/UCH_V50_PR010/UCH_V44_PR011/UCH_V48_PR011/
UCH_V4C_PR011/UCH_V4D_PR011/UCH_V4F_PR011/UCH_V50_PR011/UCH_V44_PR012/UCH_V48_PR012/UCH_V4C_PR012/
UCH_V4D_PR012/UCH_V4F_PR012/UCH_V50_PR012

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Command summary table87B
87B - 246
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Command summary table87B
87B - 246V9 MR-372-J84-87B000$731.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Command summary table
*RCH: Passenger Compartment Heating Resistor
*CPE: Electric central door locking
*SR.: SunroofTool command Diagnostic tool title Vdiag
AC003Immobiliser warning light
V44, V48,
V4C, V4D,
V4F, V50 AC004Central door locking
AC005Central door unlocking
AC006Driver's door unlocking
AC007Rear screen wiper
AC008Front fog lights
AC009Rear fog lights
AC015Air conditioning button indicator light
AC016RCH* 1 relay
AC017RCH* 2 relay
AC018RCH* 3 relay
AC019Heated rear screen indicator light
AC020CPE* button indicator light
AC021Interior lights
AC022Left-hand direction indicator
AC023Right-hand direction indicator
AC024Card reader lighting
AC025One-touch window control/SR.* authorisation
AC026Start button lighting
AC027Footwell lights
AC030Headlight washer relay 1 (only if Vdiag 44 UPC)
AC031Headlight washer relay 2 (only if Vdiag 44 UPC)
AC032Driver's side external aerial testing
AC033Passenger's side external aerial testing
AC034Boot external aerial test
AC036Internal aerial test
AC037Transmitter aerial fault finding
AC076Child safety lock indicator light
MR-372-J84-87B000$731.mif

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Command summary table87B
87B - 247
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Command summary table87B
87B - 247V9 MR-372-J84-87B000$731.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
Special commands Description Vdiag
SC001Reading the valve set and the stored codes
V44, V48,
V4C, V4D,
V4F, V50 SC002Programming the 4 valve codes
SC003Spare
SC004UCH programming
SC005Card check
SC006Card allocation
SC008Type of UCH
SC016Child safety lockV4C, V4D,
V4F, V50
Settings Description Vdiag
VP004Enter VINV44, V48,
V4C, V4D,
V4F, V50 VP005Entering recommended pressures
VP016New vehicle storage mode deactivationV4F, V50

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of commands87B
87B - 248
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of commands87B
87B - 248V9 MR-372-J84-87B000$774.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of commands
AC003
IMMOBILISER INDICATOR LIGHT
NOTESNo faults should be present or stored.
The instrument panel must be detected as present on the multiplex network.
This command is for testing whether the immobiliser warning light is working.
The command lasts 10 seconds.
Use Wiring Diagrams Technical Note for MEGANE II or SCENIC II.
The immobiliser indicator light does not come on when the command is performed.
Check the condition and connection of the instrument panel 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.
With the command running, check for earth on connection 88T of component 427.
If okay, replace the instrument panel.
Check the condition and connection of connector PE2 on the UCH
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 insulation and continuity of the following connection:
●Connection code 20W between components 645 and 427.
If the connection 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.
If the fault is still present, contact Techline.
AFTER REPAIRCarry out another fault finding check on the system.
Clear the stored faults.
Deal with any other faults.
MR-372-J84-87B000$774.mif