steering wheel RENAULT SCENIC 2008 J84 / 2.G Passenger Comparment Connection Unit Workshop Manual

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-25
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-25V9 MR-372-J84-87B000$086.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
1.2.2 Unlocking/locking the steering column:
1Steering column lock
2multiplex line
3Supply
4Sensor Line
5Safety line
a/ Unlocking the steering column lock
Following authentication of the Renault card:
1/ The UCH sends a code to the electric steering column lock with an unlocking request via the multiplex network
(ET119 UCH request to steering column lock).
2/ If the electric steering column lock recognises the code, it unlocks and sends its unlocked status to the UCH
(ET073 Steering column lock sensor signal).
3/ When the UCH receives the "Steering column unlocking completed" signal, it orders the Protection and Switching
Unit to activate the + after ignition relay and the procedure continues.
The physical status of the column lock can be displayed by status ET072 Steering column lock and its
programming can be displayed by status ET071 Steering column lock blank.
The steering column lock remains locked if:
–There is excessive mechanical load on the steering column (e.g.: wheel jammed against a kerb),
–the battery voltage is too low,
–the power demanded by the column lock is too high (thermal protection of the column lock electric motor). Note:
After ignition feed can only be established if the steering column unlocking procedure is performed
correctly.

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault summary table
87B
87B-69
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault summary table
87B
87B-69V9 MR-372-J84-87B000$258.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault summary table
Tool fault Diagnostic tool title Vdiag
DF001UCH
44, 48, 4C, 4D, 4F, 50 DF002Steering lock
DF003Clutch switch circuit'
DF004Brake light switch circuit
DF005Card
DF006Front left-hand wheel valve sensor
DF007Front right-hand wheel valve sensor
DF008Rear right-hand wheel valve sensor
DF009Rear left-hand wheel valve sensor
DF010Steering column control unit circuit
DF011Rain/light sensor circuit
DF012Right-hand direction indicator circuit
DF013Left-hand direction indicator circuit
DF014Card reader circuit
DF015Optical sensor circuit
DF016At least 2 identical codes/summer set
DF017At least 2 identical codes/winter set
DF018Programming of 4 codes in summer set not performed
DF019Programming of 4 codes in winter set not performed
DF020Front internal aerial circuit
DF021Rear internal aerial circuit
DF022Centre internal aerial circuit
MR-372-J84-87B000$258.mif

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault summary table
87B
87B-70
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault summary table
87B
87B-70V9 MR-372-J84-87B000$258.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
Tool fault Diagnostic tool title Vdiag
DF023Driver's side front external aerial circuit
44, 48, 4C, 4D, 4F, 50 DF024Passenger side front external aerial circuit
DF025Driver's side rear external aerial circuit
DF026Passenger side rear door external aerial circuit
DF027External temperature sensor circuit
DF029Steering lock circuit
DF030Anti-locking line
DF031One-touch window connection
DF032Tailgate external aerial
DF033Driver-side external aerial(s)
DF034Passenger-side external aerial(s)
DF035Internal aerial circuit
DF072Child safety lock circuit
4D, 4F, 50 DF073Right-hand door child safety lock circuit
DF074Left-hand door child safety lock circuit
DF075Timed supply circuit
DF147Steering column lock safety circuit44, 48, 4C, 4D, 4F, 50
DF210Rear access aerial configuration50
DF319Front left-hand wheel pressure
44, 48, 4C, 4D, 4F, 50 DF320Front right-hand wheel pressure
DF321Rear right-hand wheel pressure
DF322Rear left-hand wheel pressure

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 - Fault Finding Chart
87B
87B -372
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart
87B
87B -372V9 MR-372-J84-87B000$989mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
ALP47 Steering column lock does not unlock
NOTES–The immobiliser warning light flashes normally,
–the card reader does not flash,
–there is a message on the instrument panel Column not unlocked or Turn
steering wheel + Start.
Check that the steering column is not under any mechanical stress (e.g.: wheel(s) jammed against pavement).
If the steering column is under stress, try to start the vehicle again by lifting the steering column (and pulling the
card out of the reader if a message requests this).
Check the consistency of statuses ET072 Steering column lock and ET073 Steering column lock signal.
In the event of a fault, see the procedure for these statuses in the UCH section.
Check that the steering column lock belongs to the vehicle using status ET248 Steering column lock immobiliser
code.
If the fault is still present, contact the Techline.
AFTER REPAIRCarry out a complete check with the diagnostic tool.
UCH_V44_ALP47 /UCH_V48_ALP47/UCH_V4C_ALP47/
UCH_V4D_ALP47/UCH_V4F_ALP47/UCH_V50_ALP47