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

37B-2
MR-372-J84-37B000$072.mif
V11
37B
ELECTRONIC PARKING BRAKE
Fault finding – Introduction
1. SCOPE OF THIS DOCUMENT
This document presents the fault finding procedure applicable to all computers with the following specifications:
2. PREREQUISITES FOR FAULT FINDING
Documentation type
Fault finding procedures (this document):
– Assisted fault finding (integrated into the diagnostic tool), Dialogys.
Wiring Diagrams:
– Visu-Schéma (CD-ROM), paper.
Type of diagnostic tools
–CLIP
Special tooling required
3. REMINDERS
Procedure
To save power, the UCH on the Laguna II Phase 2, Espace IV phase 1, 2 and 4, and Vel Satis phase 1 and 2
interrupts the + after ignition feed supply after 3 minutes.
To run fault finding on a computer, it is possible to force the + after ignition feed for 1 hour by applying the following
procedure:
– Press the card unlocking button,
– Insert the card into the reader,
– press the start button (interrupting the timed + after ignition feed mode),
– press the start button for more than 5 seconds, until the immobiliser warning light flashes rapidly (4 Hz).
This forced + after ignition feed mode remains active for 1 hour.
Pressing the start button or removing the card from the card reader interrupts the forced + after ignition feed, but
does not interrupt the time period for the forced + after ignition feed. Until one hour has elapsed, activating the +
after ignition feed will restart forced + after ignition feed for the remaining time. Vehicle(s): Vel Satis phase 1
Vel Satis phase 2
Laguna II Phase 2
Scénic II Phase 1 and
Scénic II Phase 2
Espace IV phase 1
Espace IV phase 2
Espace IV phase 4
Function concerned: Electronic parking brakeName of computer: FPA
Vdiag No.: 0C, 04, 08, 0D, 11
Special tooling required
Multimeter
Elé. 1681 Universal bornier
FPA_V0C_PRELI/FPA_V04_PRELI/FPA_V08_PRELI/FPA_V0D_PRELI/FPA_V11_PRELI
FPA
Vdiag No.: 0C, 04, 08,
0D, 11
MR-372-J84-37B000$072.mif

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ELECTRONIC PARKING BRAKE
Fault finding – Introduction
FPA
Vdiag No.: 0C, 04, 08,
0D, 11
37B
Only affects the Scénic II phase 1 and the Scénic II phase 2:
To run fault finding on the vehicle's computers, switch on the ignition in fault finding mode (forced + after ignition
feed).
Proceed as follows:
– Renault card in the card reader (keyless vehicle scenario 1, entry-level, without hands-free and scenario 2, top of
the range, hands-free),
– press and hold the Start button (longer than 5 seconds) with start-up conditions not fulfilled,
– connect the diagnostic tool and perform the required operations.
To cut off + after ignition feed, proceed as follows:
– disconnect the diagnostic tool,
– press the Start button twice briefly (less than 3 seconds).
– ensure that the + after ignition feed has been cut off by checking that the computer indicator lights on the
instrument panel have gone out.
Fault context.
Affects VDiag 08, 0C, 0D and 11.
Explanation of the fault context counters.
The are three different counters:
PR022: Dating counter
PR018: Presence counter
PR019: Frequency counter
Dating counter:The counter starts when the fault appears.
Each time the computer switches on and the fault is stored or present, the
counter increases by 1 up to 255.
Presence counter:As soon as the fault is present, the counter goes to 15. If the fault becomes
stored, each time the computer switches on, the number decreases by 1
(from 15 to 0) and goes back to 15 again if the fault reappears.
Frequency counter:Number of times the present fault appears; it sets to 0 when the fault appears.
It increases each time the fault moves from stored to present.
The maximum value of this counter is 15.

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V11
ELECTRONIC PARKING BRAKE
Fault finding – Introduction
FPA
Vdiag No.: 0C, 04, 08,
0D, 11
37B
4. FAULT FINDING PROCEDURE (CONTINUED)
Wiring check
Fault finding problems
Disconnecting the connectors and/or handling the wiring harness may temporarily remove the cause of a fault and
create other faults.
Electrical measurements of voltage, resistance and insulation are generally correct, especially if the fault is not
present when the analysis is made (stored fault).
Visual inspection
Look for damage under the bonnet and in the passenger compartment.
Carefully check the fuses, insulators and wiring harness routing.
Look for signs of oxidation.
Physical inspection
While manipulating the wiring, use the diagnostic tool to note any change in fault status from stored to present.
Make sure that the connectors are properly locked.
Apply light pressure to the connectors.
Twist the wiring harness.
If there is a change in status, try to locate the source of the fault.
Inspection of each component
Disconnect the connectors and check the appearance of the clips and tabs, as well as the crimping (no crimping on
the insulating section).
Make sure that the clips and tabs are properly locked in the sockets.
Check that no clips or tabs have been dislodged during connection.
Check the clip contact pressure using an appropriate model of tab.
Continuity and insulation check
Check the continuity of entire lines, then section by section.
Look for a short circuit to earth, to + 12 V or to another wire.
If a fault is detected, repair or replace the wiring harness.

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V11
37B
ELECTRONIC PARKING BRAKE
Fault finding – System operation
PRESENTATION OF THE PARKING BRAKE:
The electronic parking brake provides the following functions:
– keeps the vehicle stationary when stopped (parking brake).
– 'dynamic' emergency brake (if the main brakes fail).
– automatic braking force adjustment according to the slope (adapted application),
– electronically-assisted parking brake application when the engine is stopped (depending on configuration),
– easy start with electronically-assisted parking brake release (depending on configuration),
– manual application and release by pulling on the lever.
SYSTEM COMPONENTS AND OPERATION:
The system consists of the following components:
●Control lever with brake on indicator light.
– For applying and releasing the parking brake.
●Control unit (computer) housing an electric motor, the brake cable hooks, angle sensor and force sensor.
–The angle sensor controls locking according to the angle of the slope.
–The force sensor checks and corrects the force applied to the brakes.
●Clutch pedal position sensor to help with pulling away.
– Informs the computer of the vehicle's clutch position (the position of the pedal enables the torque necessary for
vehicle movement to be obtained).
●Tw o mechanical cables
– Convey the mechanical force to the rear brakes.
●Emergency control cable (in the central storage compartment on the LAGUNA, VEL SATIS and ESPACE and in
the boot on the SCENIC).
– Enables the rear brakes to be released in the event of the battery or parking brake failing.
●Warning lights and symbol on the instrument panel.
– Indicate application, releasing and any faults on the parking brake.
Note:
The parking brake cable play compensation is performed automatically by the control unit.
FPA
Vdiag No.: 0C, 04, 08,
0D, 11
MR-372-J84-37B000$144.mif

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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.

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V11
ELECTRONIC PARKING BRAKE
Fault finding – System operation
FPA
Vdiag No.: 0C, 04, 08,
0D, 11
37B
GENERAL OPERATING MODE FOR THE COMPUTER:
The electronic parking brake computer operates in two modes: STANDBY mode and SWITCH ON mode.
●SWITCH ON mode:
Available functions:
– Manual application and release, assisted application and release and emergency braking (steering column
unlocked).
– Full system fault finding (all faults can be identified).
Switch on conditions (3 possibilities):
– The UCH sends a switch on request to the parking brake computer via the multiplex network when the vehicle
is opened or the card is inserted in the reader.
– Braking request via the parking brake control lever.
– Battery voltage more than 13.2 V, if the vehicle has been parked for less than 24 hours.
●STANDBY mode:
Available functions:
– Monitoring of the braking force and slope angle for 24 hours (to ensure parking brake application).
– Only application is authorised (using the lever).
– Restricted system fault finding (the computer can no longer identify all faults).
– Release not authorised.
Conditions for setting to standby:
– The UCH sends a "set to standby" request to the parking brake computer via the multiplex network after the
ignition is switched off and the vehicle is locked (after a few seconds). The parking brake computer's STANDBY
mode will be confirmed by the lever warning light going out (special note: the battery voltage must be less than
13.2 V).
CABLE RESETTING:
The parking brake cable is locked after the control lever is released or after driving at over 1 mph (2 km/h) (switched
on mode).
When the electronic parking brake system locks, it makes a sound that lasts for a few seconds and ends with
clicking (play compensation is automatic).WARNING
Before using the emergency control, it is important to put the vehicle into gear and wedge one wheel if necessary
(on a slope).

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V11
ELECTRONIC PARKING BRAKE
Fault finding – System operation
FPA
Vdiag No.: 0C, 04, 08,
0D, 11
37B
WARNING LIGHT MANAGEMENT
Indications of a level 1 fault:
–Check Parking Brake message on the instrument panel display.
–orange warning light (P in a triangle) on the instrument panel comes on.
–SERVICE warning light comes on.
Indications of a level 2 fault:
–Parking brake defective message on the instrument panel display.
–1-second audible warning (from the instrument panel),
–orange warning light (P in a triangle) on the instrument panel comes on.
–SERVICE warning light comes on,
–Red indicator light (brake pad light) on the instrument panel comes on.
– parking brake control lever indicator light flashes.
Warning occurs:
– when the door is opened and a gear is engaged on an automatic transmission,
– when the vehicle is moving, despite the parking brake being applied,
– when the door is opened, with the engine running and the parking brake released,
– when the door is opened, with the engine stopped and the parking brake released, Note:
When the lever warning light stops flashing, the instrument panel message disappears. If the system has a level 2
fault, whenever the lever is used, the indicator light on the lever starts flashing again and the fault message
reappears.

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V11
37B
ELECTRONIC PARKING BRAKE
Fault finding – Allocation of computer tracks
ALLOCATION OF COMPUTER TRACKS FOR THE ELECTRONIC PARKING BRAKE
AND THE CONTROL LEVER
Track Description
A1Not used
A2Multiplex line L
A3Multiplex line H
A4Diagnostic line K
B1Not used
B2Not used
Control lever
tracks
B3Not used
B4Not used 6 + 12 V battery
12+12V side
lights
C1Not used 2 Earth
C2Dynamic brake switch signal (1
stswitch)
7
C3Dynamic brake switch signal (2
ndswitch)
10
C4Lever warning light lit
5
D1Not used
D2Dynamic brake switch supply (1
stswitch)
9
D3Static brake switch supply (2
ndswitch)
4
D4Not used
E1Not used
E2Clutch pedal sensor earth
Clutch pedal
sensor
tracks E3Clutch pedal sensor signal
E4Clutch pedal sensor supply
3
F1Not used
2
F2Not used
1
F3Not used
F4Not usedNote:
The clutch pedal sensor is only fitted to
vehicles with a manual gearbox.
G1Not used
G2Computer earth (SCENIC II Ph 1 and Ph 2 only)
G3Not used
G4+ Battery feed (SCENIC II Ph 1 and Ph 2 only)
H1Not used
H2Computer earth
H3+ 12 V battery
FPA
Vdiag No.: 0C, 04, 08,
0D, 11
MR-372-J84-37B000$216.mif

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MR-372-J84-37B000$288.mif
V11
FPA
Vdiag No.: 0C, 04, 08,
0D, 11ELECTRONIC PARKING BRAKE
Fault finding – Replacement of components37B
B/ COMMISSIONING A NEW COMPUTER
1/ COMPUTER CONFIGURATION
– Carry out configuration in accordance with the customer's request (see Configurations and
programming).
2/ VEHICLE IDENTIFICATION NUMBER ENTRY
– run command VP004 Write VIN.
– enter the vehicle identification number using the diagnostic tool keypad,
–confirm.
3/ COMPUTER CALIBRATION AND COMMISSIONING
–In + after ignition feed, run command VP011 Computer calibration and initialisation and carry out
the following 4 steps.
STEP 1 VEHICLE MASS CALIBRATION
Screen 1:
With the dropdown menu, enter the following information:
– vehicle type,
– engine type,
– gearbox type,
– type of driving style,
– equipment level (for Vdiag 04),
– confirm the operation by pressing Next.
Screen 2:
– reread the highlighted information.
– If the highlighted information does not match the vehicle, return to the selection screen by pressing Back,
– if the highlighted information is correct, continue with step 2 by pressing Next.
STAGE 2 INITIALISING A NEW PARKING BRAKE
– Initialise the brake by pressing YES (you should hear a noise as the brake is applied and then released).
– Proceed to step 3 by pressing Next.
STEP 3 SLOPE INITIALISATION
– Calibrate the slope sensor by pressing Confirm. Proceed to step 4 by pressing Next.
STEP 4 INITIALISING ASSISTED BRAKING
– Carry out initialisation by pressing Confirm.
– Return to the selection list screen by pressing Finish. Note:
If the vehicle identification number is not entered and command CF007 Vehicle configuration is not run, step 3
of initialising the computer will not work.
WARNING
To initialise the computer, the vehicle must be on a horizontal surface with the brake cables correctly fitted
(connected to the rear brake callipers) and nobody must be working on the vehicle.

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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