ESP RENAULT SCENIC 2008 J84 / 2.G Electrical Equipment - Network Interface Unit BIC Workshop Manual

86D -2V1 MR-372-J84-86D050$010.mif
86D
BIC
Vdiag No.: 14
1. SCOPE OF THIS DOCUMENT
This document presents the fault finding method 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.
Type of diagnostic tools
–CLIP
Special tooling required
3. REMINDER
Procedure
Scénic II Phase 2: To run fault finding on the vehicle computers, switch on the forced + after ignition feed.
Proceed as follows:Vehicle(s): Espace IV Phase 2, Scénic II
Phase 2Name of computer: Multimedia network
interface unit
Function concerned: Interface between the
vehicle and multimedia networksVdiag No.: 14
Special tooling required
Multimeter
Ele. 1481Bornier
Elé. 1681 Universal bornier
Switch on the forced + after ignition feed:
–with the vehicle card in the card reader,
–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.
BIC_V14_PRELI
MULTIMEDIA NETWORK INTERFACE UNIT
Fault finding – Introduction

86D -3V1 MR-372-J84-86D050$010.mif
MULTIMEDIA NETWORK INTERFACE UNIT
Fault finding – Introduction86D
BIC
Vdiag No.: 14
Procedure (continued)
Espace IV Phase 2: To save energy, the UCH on the Espace IV Phase 2 cuts out the + after ignition feed 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 and hold the Start button for over 5 seconds until the engine immobiliser warning light starts to flash 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 cuts off the + after ignition feed but does not cut
off the forced after ignition feed timed mode. Until one hour has elapsed, activating the + after ignition feed will
restart forced + after ignition feed for the remaining time.
Faults
Faults are displayed as present or stored (they appeared in a certain context and have since disappeared, or they
are still present but cannot be diagnosed in the current context).
The present or stored status of faults should be considered when using the diagnostic tool after the + after ignition
feed is switched on (without any action on the system components).
For a present fault, apply the procedure described in the Interpretation of faults section.
For a stored fault, note the faults displayed and apply the instructions in the Notes section.
If the fault is confirmed when the instructions in the Notes section are applied, the fault is present. Deal with the
fault.
If the fault is not confirmed, check:
–the electrical lines which correspond to the fault,
–the connectors on these lines (corrosion, bent pins, etc.),
–the resistance of the component detected as faulty,
–the condition of the wires (melted or split insulation, wear). Switching off the forced + after ignition feed:
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 warning lights on the instrument
panel have gone out.

86D -4V1 MR-372-J84-86D050$010.mif
MULTIMEDIA NETWORK INTERFACE UNIT
Fault finding – Introduction86D
BIC
Vdiag No.: 14
Conformity check
The aim of the conformity check is to check data that does not produce a fault on the diagnostic tool when the data
is inconsistent. Therefore, this stage is used to:
–carry out fault finding on faults that do not have a fault display, and which may correspond to a customer complaint.
–check that the system is operating correctly and that there is no risk of a fault recurring after repair.
This section gives the fault finding procedures for statuses and parameters and the conditions for checking them.
If a status is not behaving normally or a parameter is outside the permitted tolerance values, consult the
corresponding fault finding page.
Customer complaints - Fault finding chart
If the test with the diagnostic tool is correct but the customer complaint is still present, the fault should be
processed by customer complaints.
A summary of the overall procedure to follow is provided on the following page in
the form of a flow chart

86D -6V1 MR-372-J84-86D050$010.mif
MULTIMEDIA NETWORK INTERFACE UNIT
Fault finding – Introduction86D
BIC
Vdiag No.: 14
4. FAULT FINDING PROCEDURE (continued)
Wiring check
Fault finding problems
Disconnecting the connectors and/or manipulating the wiring may temporarily remove the cause of a fault.
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.
Resistance 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.

86D -8V1 MR-372-J84-86D050$020.mif
86D
BIC
Vdiag No.: 14
Location of the Multimedia interface unit in the passenger compartment of Espace IV Phase 2
Location of the Multimedia interface unit in the passenger compartment of Scénic II Phase 2
MULTIMEDIA NETWORK INTERFACE UNIT
Fault finding – List and location of components

86D-11V1 MR-372-J84-86D050$040.mif
86D
BIC
Vdiag No.: 14
Layout of the main components of the LPN* Radio system:
Diagnostic socket
V M CAN
Other computersMultimedia network
interface unit
Steering column
control
GPS aerial LPN radio navigation
Passenger
compartment fuse box
and relay
Aerial amplifier
Radio navigation
display
ABS, ABS/ESP or
wheel speed
computer
depending on
equipment level
Microphone
CD changer
(depending on
equipment)Speakers
MULTIMEDIA NETWORK INTERFACE UNIT
Fault finding – Operating diagram

86D-15V1 MR-372-J84-86D050$070.mif
86D
BIC
Vdiag No.: 14
For information on removing/refitting the multimedia network interface unit, refer to the MR for the vehicle concerned:
–Scénic II Phase 2 (see MR 370, Mechanical, 83C, On-board telematics system, Multimedia network interface
unit: Removal - Refitting)
–Espace IV Phase 2 (see MR 405, Mechanical, 83C, On-board telematics system, Multimedia network
interface unit: Removal - Refitting)
Operations to be carried out before replacing the multimedia network interface unit:
1. Before replacing the multimedia network interface unit (with Techline approval), perform a fault read and a
conformity check to confirm that it is defective.
2. After obtaining Techline approval, remove the multimedia network interface unit, with the ignition off (wait
1 minute for the system to shut down completely).
The multimedia network interface units available from the Parts Department are supplied unconfigured.
Operations to be carried out after replacing the multimedia network interface unit:
–Configure the multimedia network interface unit (see Configurations and Programming).
Important: After switching on the system, there can be a delay of 20 seconds before dialogue is established.
*LPN: Low Price NavigationNote:
If the LPN* radionavigation and the multimedia network interface unit (connection unit) are replaced
simultaneously, the multimedia network interface unit must be configured first (see Configurations and
programming).
MULTIMEDIA NETWORK INTERFACE UNIT
Fault finding – Replacement of components

86D-18
AFTER REPAIRCarry out another fault finding check on the system.
Clear the stored faults using command RZ001 Fault memory.
Deal with any other faults.
V1 MR-372-J84-86D050$090.mif
MULTIMEDIA NETWORK INTERFACE UNIT
Fault finding – Interpretation of faults86D
BIC
Vdiag No.: 14
DF002
PRESENT
OR
STOREDCOMPUTER
1.DEF: Internal electronic fault.
NOTESConditions for applying fault finding procedures to stored faults:
The fault is declared present after the multimedia system has been switched on.
Replace the multimedia network interface unit, component code 1714 (see MR 405 (Espace IV Phase 2) or
MR 370 (Scénic II Phase 2) Mechanical, 83C, On-board telematics system, Multimedia network interface
unit: Removal - Refitting).
If the fault persists, contact your Techline.
BIC_V14_DF002

86D-19
AFTER REPAIRCarry out another fault finding check on the system.
Clear the stored faults using command RZ001 Fault memory.
Deal with any other faults.
V1 MR-372-J84-86D050$090.mif
MULTIMEDIA NETWORK INTERFACE UNIT
Fault finding – Interpretation of faults86D
BIC
Vdiag No.: 14
DF005
PRESENT
OR
STOREDSUPPLY
1.DEF: Overvoltage.
2.DEF: Undervoltage.
NOTESConditions for applying fault finding procedures to stored faults:
The fault is declared present after the multimedia system has been switched on.
Special notes:
The undervoltage fault appears if the computer feed voltage is less than or equal to
7.5 V for at least 1 second.
The overvoltage fault appears if the computer feed voltage is greater than or equal to
18.5 V for at least 1 second.
Use the Wiring Diagrams Technical Note for Espace IV Phase 2 or Scénic II
Phase 2.
1.DEF
NOTESNone.
Check the battery and perform an alternator supply test (see 16A, Starting, Charging).
BIC_V14_DF005

86D-20
AFTER REPAIRCarry out another fault finding check on the system.
Clear the stored faults using command RZ001 Fault memory.
Deal with any other faults.
V1 MR-372-J84-86D050$090.mif
MULTIMEDIA NETWORK INTERFACE UNIT
Fault finding – Interpretation of faults86D
BIC
Vdiag No.: 14
DF005
CONTINUED
2.DEFNOTESNone.
Remove the card from the reader or the key from the ignition, then check the condition of the battery, component
code 107.
Check the battery: leaks, incorrectly fitted, loosened battery terminal, and corrosion.
Check the earth connections of the vehicle: battery/chassis, engine/chassis, starter/engine, alternator/engine,
gearbox/chassis.
If the fault is detected, resolve the abnormal contact fault.
Check the battery and perform an alternator supply test (see 16A, Starting, Charging).
Check the condition of fuse F15 (30 A) for Espace IV Phase 2 or fuse SHUNT (2AA) for Scénic II Phase 2.
Check the connection and condition of the connectors of the multimedia network interface unit computer,
component code 1714, depending on the vehicle equipment.
If any connectors are faulty and there is a repair procedure (see Technical Note 6015A, Electrical wiring repair,
Wiring: Precautions for repair), repair the connectors, otherwise replace the wiring.
Disconnect the computer connector and check the conformity of the following connections:
•BP3A between components 260 and 1714 (for Espace IV Phase 2),
•BCP3 between components 260 and 1714 (for Scénic II Phase 2),
•BPT between components 645 and 1714 (for Scénic II Phase 2),
•MAN between component 1714 and earth (for Scénic II Phase 2),
•NC between component 1714 and earth (for Espace IV Phase 2).
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.