2008 RENAULT SCENIC ignition

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Replacement of components PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Replacement of components
87B
87B-49
87B
87B-49V9 MR-372-J84-87B000$172.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Replacement of components
REPLACING THE UCH COMPUTER
Switch off the ignition before replacing the UCH.
After replacing the UCH, configure the new computer for the equipment present on the vehicle.
●Configure the UCH: WITH or WITHOUT Tyre pressure monitor function using command CF023 Tyre pressure
monitor function in scenario SC008 UCH type.
●Enter the recommended pressures with command VP005 Enter recommended pressures.
●Program the four valve codes using command SC002 Program the four valve codes.
The configurations are described under the Configuration and programming section.
REPLACING ONE OR MORE VALVES
Program the UCH with the new valve code by running command SC002 described in the Configuration and
programming section.
Note: Program all four valve codes even if only one valve has been replaced.
REPLACING THE INSTRUMENT PANEL
After replacing the instrument panel, configure it for the equipment installed in the vehicle.
Configure the tyre pressure monitor function WITH or WITHOUT in the instrument panel using command CF145
Tyre pressure monitor (see 83A, Instrument panel).
MR-372-J84-87B000$172.mif

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Configurations and programming
87B
87B-56
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Configurations and programming
87B
87B-56V9 MR-372-J84-87B000$215.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
4/ INJECTION COMPUTER PROGRAMMING:
A blank injection computer is automatically programmed when + after ignition feed is first activated on the vehicle.
After this, the injection computer has been programmed definitively. The injection computer can no longer be used
on another vehicle.
Programming will operate correctly if:
–the cards and UCH are programmed,
–the steering column lock is programmed (to activate + after ignition feed),
–the injection computer is blank.

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-73
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
87B
87B-73V9 MR-372-J84-87B000$301.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
DF002
CONTINUED 1
3.DEF
NOTESAttempt to apply forced + after ignition feed to update the
faults.
Release the column by turning the steering wheel, while pressing the start button.
If the fault is still present without mechanical fault (with the wheels set straight ahead), replace the steering column
lock.
4.DEF
NOTESAttempt to apply forced + after ignition feed to update the
faults.
The steering column lock does not belong to this vehicle (or the UCH and/or the cards do not belong to this vehicle).
Ensure the conformity of the vehicle.
If the fault is still present contact Techline.
5.DEF
NOTESAttempt to apply forced + after ignition feed to update the
faults.
The steering column lock does not belong to this vehicle (or the UCH and/or the cards do not belong to this vehicle).
Ensure the conformity of the vehicle.
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.

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-80
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
87B
87B-80V9 MR-372-J84-87B000$301.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
DF011
PRESENT
OR
STOREDRAIN/LIGHT SENSOR CIRCUIT
1.DEF: Communication disrupted
2.DEF: Internal electronic fault
NOTESConditions for applying the fault finding procedure to a stored fault:
Run the automatic wiper system and automatic light illumination system, then cover the
sensor and/or place water on it.
If the fault appears, carry out this fault finding procedure.
Use Wiring Diagrams Technical Note for MEGANE II or SCENIC II.
1.DEF
NOTESNone.
For vehicles which were manufactured after June 2005, check the condition and connection of the sensor supply
7.5A fuse located on the Protection and Switching Unit.
Replace it if necessary.
Check the condition and connection of the sensor connector (bent, oxidised, broken tabs etc.).
If the connector is faulty and there is a repair procedure (see Technical Note 6015A, Electrical wiring repair,
Wiring: Precautions for repair), repair the connector, otherwise replace the wiring.
Check for an earth on connection MAM of component 1415.
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 for + 12 V, BPT connection of component 1415 (timed + 12 V before ignition feed if the vehicle was
manufactured after June 2005). If the connection is faulty and if there is a repair procedure (see Technical Note
6015A, Electrical wiring repair, Wiring: Precautions for repair), repair the wiring, otherwise replace the wiring.
Ensure the continuity and the insulation of the following connection:
●Connection code BPT between components 645 and 1415.
If the connection is faulty and if there is a repair procedure (see Technical Note 6015A, Electrical wiring repair,
Wiring: Precautions for repair), repair the wiring, otherwise replace the wiring.
Check for any intermediate connectors using the vehicle wiring diagram and repair if necessary.
AFTER REPAIRCarry out another fault finding check on the system.
Clear the stored faults.
Deal with any other faults.
UCH_V44_DF011/UCH_V48_DF011/UCH_V4C_DF011/
UCH_V4D_DF011/UCH_V4F_DF011 /UCH_V50_DF011

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
87B
87B -100
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
87B
87B -100V9 MR-372-J84-87B000$344.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
DF029
PRESENT
STEERING LOCK CIRCUIT
CC.1: Short circuit to + 12 V
1.DEF: Open circuit (e.g. lock disconnected) or lock power supply absent
2.DEF: Lock earth absent or multiplex network faulty (e.g. steering lock ΑΕ UCH
connection)
4.DEF: Short circuit to earth on the steering column lock sensor connection
5.DEF: Open circuit on the steering column lock sensor connection
6.DEF: Short circuit to + 12 V on the steering column lock sensor connection
NOTESSpecial note:
Attempt to apply forced + after ignition feed to update the faults.
Use Wiring Diagrams Technical Note for MEGANE II or SCENIC II.
CC.1
NOTESAttempt to apply forced + after ignition feed to update the
faults.
Check the condition and connection of the steering column lock connector.
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 condition and connection of connectors PE2, PP2 on the UCH and connectors PEH (UPC Vdiag 44)
or CT1 (UPC Vdiag 48) on the UPC (bent or broken tabs, etc.).
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 26AZ,
●Connection code 26BA, between the steering column lock (component code 1088) and the UCH
(component code 645)
●Connection code AP15, between the steering column lock (component code 1088) and the Protection and
Switching Unit (component code 1337)
If the connection(s) is faulty and if 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 the Techline.
AFTER REPAIRCarry out another fault finding check on the system.
Clear the stored faults.
Deal with any other faults.
UCH_V44_DF029P/UCH_V48_DF029P/UCH_V4C_DF029P/
UCH_V4D_DF029P/UCH_V4F_DF029P/UCH_V50_DF029P
MR-372-J84-87B000$344.mif

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
87B
87B -101
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
87B
87B -101V9 MR-372-J84-87B000$344.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
DF029
CONTINUED 1
1.DEF/
2.DEF
NOTESAttempt to apply forced + after ignition feed to update the
faults.
Check the presence and condition of fuses F5A and F5D on the Protection and Switching Unit ( Vdiag 44 UPC)
or fuses F11 and F18 ( Vdiag 48 UPC or later).
If the fuse(s) is faulty, replace it.
Check the condition and connection of the steering column lock connector.
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 condition and connection of connectors PP2 and PE2 on the UCH and connectors PEH (Vdiag44
UPC) or CT1 (Vdiag 48 UPC or later) on the Protection and Switching Unit (bent or broken tabs, etc.).
Ifthe connector(s) is faulty and if there is a repair procedure ( seeTe chnical Note 6 015A, Repairing e lectrical wiring,
Wiring: Precautions for repair), r epair the connector, otherwise replace the wiring.
Check the insulation and continuity of the following connection:
●Connection code NAM between component 1088 and earth.
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.
Check the insulation and continuity of the following connections:
●Connection code 26I,
●Connection code 26AZ,
●Connection code 26BA.
Between components 645 and 1088.
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.
Check for + 12 V on connection AP15 of component 1088.
Check the insulation, continuity and the absence of interference resistance on connection AP15 between
components 1337 and 1088.
If the connection or connections are faulty and there is a repair procedure (see Technical Note 6015A, Repairing
electrical wiring, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
With the ignition on, check for + 12 V on connection APCB of component 645.
Check the insulation, continuity and the absence of interference resistance on connection APCB between
components 1337 and 645.
If the connection or connections are faulty and there is a repair procedure (see Technical Note 6015A, Repairing
electrical wiring, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
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.