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

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-11
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-11V9 MR-372-J84-87B000$086.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
f/ Display:
Unlocking is indicated by 1 flash of the direction indicators.
Locking is indicated by 2 flashes of the direction indicators.
When using the "boot status toggle" switch, display is not performed if a toggle request is made when the vehicle is
completely unlocked. In fact, in this case, the vehicle is not locked as only the boot is locked.
If one of the opening elements is detected as open when the request for locking the vehicle is made, the UCH will not
authorise vehicle locking and no indicators will flash to warn the user.
1.1.2 procedure of locking/unlocking by pressing the central door locking button:
This button is used to lock/unlock the vehicle while stationary or moving.
This button has no effect if the vehicle has been locked using the card in hands-free or manual mode.
Pressing the electric central door locking button when a door is unlocked will lock all the doors and the electric
central door locking indicator light will light up. Status ET044 CPE* button may be used to check that the button is
operating correctly.
The operation of the electric central door locking indicator light can be checked using command mode AC020 CPE*
button indicator light.
1.1.3 Principle of automatic locking when driving (RAID* system):
The Automatic Locking when Driving (RAID) function locks the vehicle as soon as the speed signal is above
approximately 4 mph (7 km/h).
Activation or deactivation of the RAID function can be viewed using ET043 RAID* function authorisation by CPE*.
The RAID function can be activated or deactivated by pressing and holding the electric door locking button for
approximately 5 seconds while the engine is running. Acknowledgement is indicated by a buzzer.
1.1.4 Principle of automatic relocking:
Automatic relocking takes place 2 minutes after hands-free or card unlocking if unlocking is not followed by the
opening of a door.
CPE*: Electric central door locking
RAID*: Renault Anti-Intruder Device Note:
Unlocking can be performed by the UCH if the airbag computer has detected an impact or if it is faulty (not
recognised on the multiplex network, internal fault, etc.). (see 88B, Multiplexing).

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-26
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - System operation
87B
87B-26V9 MR-372-J84-87B000$086.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
b/ Locking the steering column:
The steering column is locked with the engine off, after the Renault card is removed from the card reader. This
locking operation requires:
–a valid 0 mph (0 km/h) speed signal,
–a correctly functioning airbag and no impact detected,
–a deactivated + after ignition connection.
When the engine has not been started but the after ignition feed is active (e.g. forced after ignition feed), certain
conditions in which there is a drop in the after ignition feed do not cause the steering column to lock ("steering
column not locked" message).
Steering column lock fails if:
1/ Normal non-locking scenarios:
–the card is present in the card reader,
–more than 20 minutes has elapsed with the card in the reader and the engine off,
–the vehicle speed is not zero,
–power is demanded by the steering column lock too frequently.
With regard to vehicles fitted with UCH computer Vdiag 4F or above:
–the Renault card is removed from the card reader when the vehicle is in forced + after ignition feed,
–3 minutes have elapsed following a starting failure due to an engaged gear,
–the Renault card is removed from the card reader following a starting failure due to an engaged gear,
–a front door is open following a starting failure due to an engaged gear and the card is not in the reader.
To lock the steering column, start and stop the engine again.
2/ Abnormal non-locking scenarios:
–the airbag unit is faulty or locked,
–the airbag unit is disconnected,
–the airbag has been triggered,
–the speed signal is not available.
In the event that a steering column does not lock, the driver is informed via the message Steering column not locked.
1.2.3 Locking the injection computer:
When the + after ignition feed has been established, the UCH and the injection computer compare their codes via
the multiplex network. If the codes are identical, the vehicle immobiliser is deactivated (ET046 Immobiliser).
If there is a failure, the immobiliser remains active.
Reactivating protection: the immobiliser is reactivated when the engine stops.

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Conformity check
87B
87B -121
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Conformity check
87B
87B -121V9 MR-372-J84-87B000$387.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
KEYLESS VEHICLE FUNCTION
Sub-function: Access (continued 3)
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
AccessET068:Most recently locked
byAUTOMATIC = automatic re-
locking if unlocked using the
card and the doors are not
used within 2 minutes of
unlocking.
CPE* = locking by pressing
the button on the centre
console
HANDS-FREE = locking via
door or tailgate handle switch
RAID* FUNCTION = Renault
Anti-Intruder Device.
Operates from around 3 mph
(5 km/h).
CARD = locking with the
DIAGNOSTIC card = Locking
by actuator AC004 Central
door locking
LONG CPE* = locking by
pressing and holding the
button on the centre console In the event of a fault,
refer to the
interpretation of status
ET068.
ET069:Most recently
unlocked by HANDS-FREE = optical
sensors
CPE* = electric door locking
button
CARD = with the card
FAULT FINDING = AC005
IMPACT INFO = info after
impact
AIRBAG = unlocking by the
AIRBAG computer after an
accidentIf status = Airbag,
carry out fault finding
on the Airbag
computer (see 88C,
Airbag and
pretensioners). In the
event of a fault,
consult the
interpretation of status
ET069.

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses87B
87B - 186
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses87B
87B - 186V9 MR-372-J84-87B000$516.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
*CPE: Electric central door lockingET069
SOURCE OF LAST UNLOCK
NOTESNo faults should be present or stored.
Makes it possible to know what mode is the source of the last unlocking operation.
HANDS-FREE: detection of a hand in the handle.
CPE*: the UCH orders unlocking of the whole vehicle following a press on the electric central door locking button.
RENAULT CARD: detection upon a button press.
FAULT FINDING: Request by diagnostic tool using command AC005 Central unlocking of doors and boot.
IMPACT INFORMATION: following an impact signal detected.
AIRBAG: following an impact signal detected.
AFTER REPAIRCarry out another fault finding check on the system.
Clear the stored faults.
Deal with any other faults.
UCH_V44_ET069/UCH_V48_ET069/ UCH_V4C_ET069/
UCH_V4D_ET069 /UCH_V4F_ET069/UCH_V50_ET069

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses87B
87B - 191
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses87B
87B - 191V9 MR-372-J84-87B000$516.mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
ET073
CONTINUED
ET073 Unlocked and + after ignition absent.
The status remains UNLOCKED, with the ignition off, in case of failure of the airbag system or the speed signal. If
everything is OK, see dealing with fault DF029: Steering column lock circuit.
ET073 Semi-activated and + after ignition present.
In the semi-activated status, the lock bolt is pulled out, but the UCH cannot determine its position precisely.
In case of inconsistency, contact the Techline.
ET073 Undetermined.
The status is Undetermined. in the event that neither the steering column lock nor the lock sensor can inform the
UCH regarding its position.
Refer to processing of the DF029 Steering column lock circuit fault.
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 -362
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart
87B
87B -362V9 MR-372-J84-87B000$989mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
*RAID: Renault Anti-Intruder Device.
*CPE: Electric central door locking.
ALP37 Renault Anti-Intruder Device operation fault (RAID*)
NOTESFirst carry out a function fault finding check.
Check that the Automatic locking when driving function is active using status ET043
RAID* function authorised by CPE*.
Make sure no door is detected open by the UCH.
Check the consistency of the vehicle speed signal.
Check for faults in the ABS system.
Check for faults in the airbag system.
If the fault is still present, contact the Techline.
AFTER REPAIRCarry out a complete check with the diagnostic tool.
UCH_V44_ALP37 /UCH_V48_ALP37/UCH_V4C_ALP37/
UCH_V4D_ALP37/UCH_V4F_ALP37/UCH_V50_ALP37

PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart
87B
87B -371
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart
87B
87B -371V9 MR-372-J84-87B000$989mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
ALP46 Steering lock fails
NOTESCheck for any faults on the steering lock.
Check the battery voltage. It should be between 9 V and 16 V.
Check the validity of parameter PR008 "Vehicle speed".
Check for any faults in the Airbag computer (impact detected) and ABS/ESP
computers.
Reminder: In hands-free mode, the steering column lock is locked as soon as the
ignition is switched off.
With the card in the reader, the steering column lock is locked after the ignition is
switched off as soon as the card is removed from the reader.
The conditions for a drop in + after ignition feed without the steering column locking are:
–the card is present in the card reader,
–over 20 minutes passing with the card in the card reader after the engine has stopped,
–the vehicle speed is not zero,
–power being requested by the steering column lock too frequently.
With regard to vehicles fitted with UCH computer Vdiag 4F or above:
–the Renault card is removed from the card reader when the vehicle is in forced + after ignition feed,
–3 mins have elapsed following a starting failure due to an engaged gear,
–the Renault card is removed from the card reader following a starting failure due to an engaged gear,
–a front door is open following a starting failure due to an engaged gear and the card is not in the reader.
Check that these conditions are not present.
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_ALP46 /UCH_V48_ALP46/UCH_V4C_ALP46/
UCH_V4D_ALP46/UCH_V4F_ALP46/UCH_V50_ALP46