manual transmission RENAULT SCENIC 2013 J95 / 3.G Electronic Parking Brake Workshop Manual

37B-9
MR-372-J84-37B000$144.mif
V11
ELECTRONIC PARKING BRAKE
Fault finding – System operation
FPA
Vdiag No.: 0C, 04, 08,
0D, 11
37B
MANUAL OPERATION:
– The parking brake is engaged by pulling on the control lever (normal braking immobilises the vehicle).
– Over-application can be obtained by pulling and holding the lever for 5 seconds (maximum application for steep
hills or when the vehicle has reached its maximum permissible all-up weight).
– When the parking brake is applied, the computer super-applies if the force applied to the rear brake callipers is
insufficient (pads cooling) or if the computer detects slight vehicle movement. This detection is limited to
24 hours.
– The parking brake is released when the control lever is applied fully and the release switch is pressed.
ASSISTED OPERATION:
The electronic parking brake enables assisted application and release of the brake:
●Applying the brake: When the engine is switched off, the parking brake is applied when the driver presses the
start button
●Releasing: The brake releases when the drive wheels reach the torque required to move the vehicle
(Note:with automatic transmission, the driver's door must be closed).
Restrictions on assisted brake release in automatic transmissions:
Assisted release is not allowed in the following cases:
– Opening the driver's door followed by engaging a gear (gear lever in position D).
– Engaging a gear (gear lever in position D) followed by opening the driver's door. Note:
When the parking brake is applied, the red light on the instrument panel (brake pads) and indicator light on the
lever are lit.
Below 6 mph (10 km/h) pulling the lever applies the rear brakes. Above 6 mph (10 km/h) pulling the lever
provides dynamic emergency braking without locking the rear wheels (statutory deceleration of 1.5 m/s
2).
The electronic parking brake can only be released when the steering column is unlocked (forced + after ignition
feed, see Introduction).
Note: In this case, the instrument panel displays the message Lever in P or N and the buzzer on the instrument
panel sounds.
Note: In this case, release is authorised for 5 s after the driver's door has been opened (e.g. for a manoeuvre).
After 5 seconds release is prevented.
Note:
Assisted braking and release only occurs if the computer has been configured.
For details on how these configurations function, see Configuration and programming.

37B-13
MR-372-J84-37B000$288.mif
V11
37B
ELECTRONIC PARKING BRAKE
Fault finding – Replacement of components
A/ PROCEDURE FOR REPLACING AN ELECTRONIC PARKING BRAKE COMPUTER
●For the description of the mechanical operations for replacing the control unit (computer) and brake cables (see
MR405 (Espace IV) or MR395 (Laguna II) or MR370 (Scénic), Mechanical, 37B, Electronic parking brake,
Control unit: Removal - Refitting and 37A, Mechanical component controls, Parking brake cables:
Removal - Refitting or MR353 (Vel Satis), Mechanical, 37B, Automatic parking brake, Control unit and
brake cables).
●The parking brake cables must always be replaced when the computer is replaced.
●In the same way, the computer must be replaced when the parking brake cables are changed.
●Conversely, the lever and the parking brake are independent of one another.
●Lever replacement must be carried out with + after ignition feed switched off and the parking brake released,
otherwise faults may occur.
●The clutch sensor must be replaced with + after ignition feed switched on to avoid a fault being provoked.
BEFORE REPLACING THE PARKING BRAKE COMPUTER:
If the vehicle has a manual gearbox, recover the clutch data from the memory of the old computer so that it can be
entered into the new computer (see section C).
Operations to perform before replacement:
– Switch on the ignition, connect the diagnostic tool and establish dialogue with the computer (parking
brake field).
– before replacing the computer, check that it is actually causing the fault by reading the faults and apply
the fault finding procedure concerned.
Steps to follow after replacement:
– with the ignition switched off, replace the electronic parking brake computer (with the approval of
Te c h l i n e ) .
– switch on the ignition, connect the diagnostic tool and establish dialogue with the computer (parking
brake field),
– apply the procedure described in section B: NEW COMPUTER CALIBRATION AND INITIALISATION,
– release the parking brake lever to reset the cables.
– check parking brake operation by testing the braking, maximum braking, and release,
– read the faults to clear any stored faults and check that replacing the computer has enabled the fault on
the vehicle to be rectified (no faults present).
– read the configuration (repair mode menu) to check that the parking brake computer configuration has
been correctly configured.
– depending on the configuration chosen, check the assisted braking and release. Note:
An electronic parking brake computer should be replaced only when requested by the Techline (fill out the fault
finding log).
Note:
With an automatic transmission, no data recovery is required (the computer can be replaced without applying
sections C and D).
Important:
Do not clear the faults from the computer before replacing it.
IMPORTANT: It is strictly forbidden to drive a vehicle with an electronic parking brake computer unless it is in
customer mode.
FPA
Vdiag No.: 0C, 04, 08,
0D, 11
MR-372-J84-37B000$288.mif

37B-15
MR-372-J84-37B000$288.mif
V11
ELECTRONIC PARKING BRAKE
Fault finding – Replacement of components
FPA
Vdiag No.: 0C, 04, 08,
0D, 11
37B
C/ CLUTCH DATA BACKUP (for vehicles with a manual gearbox)
Purpose of the procedure:
The data saved relates to the clutch engagement point. This is important when the clutch wears, because this data
enables the parking brake to release electronically when the clutch enables the vehicle to move off.
If this data cannot be retrieved from the old computer (impossible to establish dialogue with the diagnostic tool) or a
new clutch has been fitted, the new computer has to be programmed with the clutch engagement point: drive the
vehicle, downshifting at least 30 times (from 5
th to 4th gear) before returning the vehicle to the customer.
If the clutch data is not recorded in the new computer, the operation of the assisted brake on steep slopes will be
impaired when first used.
Perform the following operations:
– establish dialogue with the computer,
– select the repair mode menu on the diagnostic tool.
– open the programming menu,
– run function SC005 Backup clutch pedal programming (the data is written to a file that is automatically
selected when the new computer is programmed).
– replace the electronic parking brake computer (see MR405 (Espace IV) or MR395 (Laguna II) or
MR370 (Scénic), Mechanical, 37B, Electronic parking brake, Control unit: Removal - Refitting or
MR353 (Vel Satis), Mechanical, 37B, Automatic parking brake, Control unit),
– follow the procedures described in sections A and B.
D/ CLUTCH DATA ENTRY (for vehicles with automatic transmission)
The initialisation must be carried out (sections A and B).
Perform the following operations:
– establish dialogue with the computer,
– select the repair mode menu on the diagnostic tool.
– open the programming menu,
– run function: SC006 Enter clutch pedal programming.
– check that the electronic parking brake is operating correctly, including the assisted release function. IMPORTANT:
Do not apply this procedure in the event of a clutch fault.
Note:
– For vehicles fitted with an automatic gearbox, command SC005 Save clutch pedal programming is
unavailable.
– Command SC006 Enter clutch pedal programming, is also unavailable if command SC005 has not already
been activated.

37B-17
MR-372-J84-37B000$432.mif
V11
37B
ELECTRONIC PARKING BRAKE
Fault finding – Fault summary table
Tool faultAssociated
DTCDiagnostic tool title
DF003 50C3Computer
DF004 50CAComputer
DF006 50C5Computer configuration
DF015 5166Clutch position sensor circuit
DF016 50 CBWarning light circuit
DF025 5168Vehicle movement with maximum application
DF028 517EComputer
DF029 517BComputer
DF035 5170Undervoltage
DF036 5180No injection multiplex signal
DF037 5181No ABS system multiplex signal
DF038 5188No automatic transmission multiplex signal
DF039 5183No UCH multiplex signal
DF041 5160Angle sensor (internal)
DF042 5161Force sensor (internal)
DF043 5162Parking brake motor
DF044 516CBrake switch
DF045 5172Redundant brake switch
DF046 516FBrake motor/cables connection
DF047 5171Manual control
DF048 5173Release switch
DF049 5175Braking
DF050 5178Mechanical jamming (internal)
DF051 5176System fault after computer replacement
DF052 516DMultiplex network
DF054 50C1Battery overvoltage
DF055 50C0Battery voltage too low
DF056 5163Brake cables incorrectly fitted
DF057 517AComputer internal temperature sensor
DF058 5177Parking brake motor current (internal)
DF059 5194No Protection and Switching Unit multiplex signal
DF073 5174Computer
FPA
Vdiag No.: 0C, 04, 08,
0D, 11
MR-372-J84-37B000$432.mif

37B-22
MR-372-J84-37B000$504.mif
V11
ELECTRONIC PARKING BRAKE
Fault finding – Interpretation of faults
FPA
Vdiag No.: 0C, 04, 08,
0D, 11
37B
DF015
PRESENT
OR
STORED
CLUTCH POSITION SENSOR CIRCUIT
CC.0 : Short circuit to earth
CC.1 : Short circuit to + 12 volts
1. DEF: Signal inconsistency between the sensor and the gearbox
2. DEF: Signal outside lower limit
3. DEF: Sensor supply fault
NOTESPriorities when dealing with a number of faults:
Deal with faults DF035 Undervoltage, DF055 Battery undervoltage and DF054
Battery voltage too high first, if they are present or stored.
Special notes:
The fault does not usually come from the electronic parking brake computer.
The fault should only be displayed on a vehicle fitted with a manual gearbox. If it is
displayed on an automatic transmission, check the configurations.
The sensor should be replaced in + after ignition feed, if not this fault may occur.
If the fault appeared following replacement of the clutch position sensor, check the
procedure and repeat it in + after ignition feed if necessary, after clearing the fault.
If the fault cannot be cleared, disconnect the clutch sensor under + after ignition
feed, then reconnect it.
Only for Vdiag 08, 0C and 0D:
If there is a stored fault, refer to the statuses and parameters when it appears.
Explanation of counters: see Introduction.
If the fault is stored and PR018 = 0 and PR022 > 25 clear the fault: do not take this
fault into account.
CC.0; CC.1; 3.DEF
NOTESConditions for applying the fault finding procedure to
a stored fault:
The fault is declared present when the ignition is switched
on (forced + after ignition feed, see Introduction).
Check the connection and condition of the clutch pedal position sensor connector.
Repair if necessary.
With the clutch pedal position sensor connector disconnected, check the insulation, continuity and absence of
interference resistance on the following connections:
AFTER REPAIRIf the computer has been replaced (at the request of the Techline), initialise the
electronic parking brake computer (see Replacement of components).
Issue several braking and release commands to confirm the repair.
Deal with any other faults.
FPA_V0C_DF015/FPA_V04_DF015/FPA_V08_DF015/FPA_V0D_DF015/FPA_V11_DF015

37B-37
MR-372-J84-37B000$504.mif
V11
ELECTRONIC PARKING BRAKE
Fault finding – Interpretation of faults
FPA
Vdiag No.: 0C, 04, 08,
0D, 11
37B
DF038
CONTINUED
Check the vehicle gearbox configuration: check that the configuration is not for a manual gearbox when the
vehicle is fitted with an automatic transmission, or that it is not configured for an automatic transmission when the
vehicle is manual.
Using the diagnostic tool, run fault finding on the multiplex system and particularly on the automatic
transmission computer-parking brake control unit segment.
This check ensures that the various multiplex system connections are correct and finds any faulty segments.
Carry out any necessary repairs.
If the multiplex system test did not find the faulty connection, carry out a conformity check to check that the
status coming from the automatic transmission computer is present and correct (ET018).
If status ET018 is not correct, carry out fault finding on the automatic transmission.
If the fault is still present, disconnect the automatic transmission computer connector to check that it is sound as
well as its clips (terminals), and in particular the clips for the multiplex tracks (refer to the wiring diagram for the
automatic transmission computer fitted on the vehicle).
Replace the clips if necessary.
If the fault persists, contact the Techline.
AFTER REPAIRIf the computer has been replaced (at the request of the Techline), initialise the
electronic parking brake computer (see Replacement of components).
Issue several braking and release commands to confirm the repair.
Deal with any other faults.

37B-82
MR-372-J84-37B000$576.mif
V11
FPA
Vdiag No.: 0C, 04, 08,
0D, 11ELECTRONIC PARKING BRAKE
Fault finding – Conformity check37B
SUB-FUNCTION: AUTOMATIC RELEASE (CONTINUED 1)
NOTESOnly carry out this conformity check after carrying out a complete check using the
diagnostic tool.
Application conditions: ignition on (forced + after ignition, see Introduction)
Note:
The interpretation of these statuses and parameters is only valid with the
ignition switched on, the statuses and parameters displayed in blue on the
diagnostic tool is information supplied by other computers, which are transmitted via
the multiplex network. If these variables display inconsistent values, check that the
multiplex system test has not shown up any faulty connections. Repair the faulty
multiplex connections before looking for a possible problem with the signals.
Each sub-function in this test is associated with a Fault finding chart.
Special notes
The diagnostic tool may display the message Computer busy when displaying
statuses and parameters. This message is displayed when the parking brake is
applying or releasing the brake, because the computer gives priority to controlling the
motor before transmitting variables. If this message is displayed, exit the current
screen and then return to it.
Order FunctionParameter or Status
Checked or ActionDisplay and notes Fault finding
3Vehicles fitted
with a manual
gearboxET016:Manual gearbox
gear lever
position.Neutral: NEUTRAL
or
Gear engaged: NOT IN
NEUTRALIn the event of a fault with these
statuses, check that the UCH is
sending signals correctly
(absence of fault DF039 No
UCH multiplex signal)
If the fault is still present, run
fault finding on the UCH (see
87B, Passenger compartment
connection unit). ET017:Reverse gear
engagedYES
(lever in reverse gear).
NO
(for other gear lever
positions).
4Vehicles fitted
with an
automatic
gearboxET018:Automatic
gearbox lever
positionDepending on the lever
position:
P, R, N, D or
Manual mode
(manual mode =
sequential gear
selection position).In the event of a fault with these
statuses, check that the
computers concerned are
sending signals correctly
(absence of fault DF038 No
automatic transmission
multiplex signal and DF052
Multiplex network)
If the fault is still present run
fault finding on the computer
concerned. ET017:Reverse gear
engagedYES
(selector lever in R).
NO
(for other gear lever
positions).

37B-106
MR-372-J84-37B000$936.mif
V11
ELECTRONIC PARKING BRAKE
Fault finding – Fault finding chart
FPA
Vdiag No.: 0C, 04, 08,
0D, 11
37B
ALP2 Will not release
NOTESOnly consult this customer complaint after a full check using the diagnostic tool
(no present or stored faults).
The main causes of the brake not releasing are:
– Driver's door incorrectly closed (on vehicles with an automatic transmission).
– Insufficient acceleration value.
– Fault with gearbox switch.
– Fault with door switch.
– Pads stuck.
– Incorrect multiplex line signals.
If the manual release will not work, see ALP 4
(see the wiring diagrams technical note for the vehicle concerned).
Check that the force applied to the accelerator pedal is sufficient whether or not the vehicle is on a downward
slope or not.
For a vehicle fitted with an automatic transmission, check that the door on the driver's side is not open or
incorrectly closed.
Close the door again and go back through neutral if necessary.
Check that the interior lights have gone out.
Check that the door switch is working correctly:
Check the insulation, continuity and the absence of interference resistance on the following connections:
– connection code 87H
– connection code MA
Between the door switch, component code 140 and the UCH, component code 645.
If there is a repair procedure (see Technical Note 6015A, Repairing electrical wiring, Wiring: Precautions for
repair), repair the wiring, otherwise replace it.
Repair if necessary.
Check that the force applied to the accelerator pedal is sufficient and that the accelerator value is sufficient (refer
to the conformity check) whether the vehicle is on a downward slope or not.
AFTER REPAIRCarry out a check using the diagnostic tool.
Deal with any other faults.
FPA_V0C_ALP2 / FPA_V04_ALP2 / FPA_V08_ALP2 / FPA_V0D_ALP2 / FPA_V11_ALP2