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

86D-2
MR-372-J84-86D000$056.mif
V2
86D
MULTIMEDIA NETWORK INTERFACE UNIT
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 procedure (this manual):
–Assisted fault finding (integrated into the diagnostic tool), Dialogys.
Wiring Diagrams:
–Visu-Schéma (CD-ROM), paper.
Type of diagnostic tools
–CLIP + multiplex line sensor
Special tooling required
3. REMINDERS
Procedure
Scénic II ph2: 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 2,
Trafic II phase 2, Kangoo 2
Function concerned: Interface between the vehicle
and multimedia networksName of computer: Multimedia network interface
unit
VDIAG No.: 04, 14
Special tooling required
Multimeter
Elé. 1481 Bornier
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.
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.
BIC_V04_PRELI/BIC_V14_PRELI
Multimedia network
interface unit
Vdiag No.: 04, 14
MR-372-J84-86D000$056.mif

86D-3
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MULTIMEDIA NETWORK INTERFACE UNIT
Fault finding - Introduction
Multimedia network
interface unit
Vdiag No.: 04, 14
86D
Procedure (continued)
Espace IV ph2: 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 on 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.
Trafic II ph2 and Kangoo 2:
To run fault finding on the vehicle computers, switch on the forced + after ignition feed.
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 taken into consideration when the diagnostic tool is used after the
+ after ignition feed is switched on (without acting 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 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).

86D-6
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MULTIMEDIA NETWORK INTERFACE UNIT
Fault finding - Introduction
Multimedia network
interface unit
Vdiag No.: 04, 14
86D
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.
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-20
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86D
MULTIMEDIA NETWORK INTERFACE UNIT
Fault finding - Conformity check
MAIN COMPUTER STATUSES AND PARAMETERS
NOTESOnly check conformity after a full check with the diagnostic tool. The values shown
in this conformity check are given as a guide.
Application conditions: Engine stopped, ignition on.
FunctionParameter, Status checked or
ActionDisplay and notes Fault finding
Power supplyET004:+ 12 V side lightsINACTIVE
SIGNAL
OFF
ONIn the event of a fault, perform fault
finding on the UCH (see 87B,
Passenger compartment connection
unit).
BIC_V04_CCONF/BIC_V14_CCONF
Multimedia network
interface unit
Vdiag No: 04, 14
MR-372-J84-86D000$560.mif

86D-23
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V2
MULTIMEDIA NETWORK INTERFACE UNIT
Fault finding - Conformity check
Multimedia network
interface unit
Vdiag No: 04, 14
86D
SUB-FUNCTION: DISPLAY
*LPN: Low Price Navigation
NOTESOnly check conformity after a full check with the diagnostic tool. The values shown
in this conformity check are given as a guide.
Application conditions: Engine stopped, ignition on.
FunctionParameter, Status checked or
ActionDisplay and notes Fault finding
LightingPR005:Dimmed lightingUse the
backlighting wheel
to vary the
parameter value.
Lights on:
from 0 to 100 %
Lights off: 102 %
If there is a fault, refer to ALP 6 "No
LPN* radionavigation backlighting".
Power supplyET004:+ 12 V side lightsINACTIVE
SIGNAL
OFF
ON
LightingET007:BrightnessDAY: Lights off
NIGHT: Lights on
External
temperaturePR004:External
temperatureUnit: ˚CIn the event of a fault, refer to the
interpretation of parameter PR004
Exterior temperature.

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86D
MULTIMEDIA NETWORK INTERFACE UNIT
Fault finding - Status summary table
Tool status Diagnostic tool title
ET001Activation signal
ET002Radio on/off button
ET003Timed battery voltage
ET004+ 12 V side lights
ET005Silence mode
ET006User profile in progress
ET007Brightness
ET008Direction of vehicle travel
ET009Repeat button
ET010Enter button
ET011+ button
ET012- button
ET013Top button
ET014High button
ET015Low button
ET017Wheel action
ET018Left-hand button
ET019Right-hand button
Multimedia network
interface unit
Vdiag No: 04, 14
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86D-31
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MULTIMEDIA NETWORK INTERFACE UNIT
Fault finding - Parameter summary table
Tool parameter Diagnostic tool title
PR001Mileage since last fault appeared
PR002Battery voltage
PR003Vehicle speed
PR004External temperature
PR005Dimmed lighting
PR012Mileage since last fault appeared
PR013No. of cycles since fault disappeared
PR014Number of occurrences of fault
Multimedia network
interface unit
Vdiag No: 04, 14
MR-372-J84-86D000$728.mif

86D-37
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MULTIMEDIA NETWORK INTERFACE UNIT
Fault finding - Customer complaints
*LPN: Low Price NavigationNO DIALOGUE WITH THE MULTIMEDIA NETWORK INTERFACE
COMPUTERALP 1
MULTIMEDIA SYSTEM NOT SWITCHING ON ALP 2
INCORRECT DIRECTION OF VEHICLE TRAVEL ALP 3
STEERING COLUMN SWITCH FAULT ALP 4
EXTERNAL TEMPERATURE DISPLAY FAULT ALP 5
NO LPN* RADIO NAVIGATION BACKLIGHTING ALP 6
Multimedia network
interface unit
Vdiag No: 04, 14
MR-372-J84-86D000$896.mif

86D-46
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Multimedia network
interface unit
Vdiag No.: 04, 14MULTIMEDIA NETWORK INTERFACE UNIT
Fault finding - Fault Finding Chart86D
*LPN: Low Price Navigation
ALP 6 No LPN* radio navigation backlighting
NOTESSwitch on the + after ignition feed to enter fault finding mode with the computer.
Use the wiring diagrams Technical Note for Scénic II ph2, Espace IV ph2,
Trafic II ph2 or Kangoo 2.
Switch on the lights.
Is the air conditioning control backlighting
correct?
YES
With the lights on, check status ET007 Brightness.
Is status ET007 "Night"?
YES
Check the insulation, continuity and the absence
of interference resistance on the following
connections:
–connection code 107X ,
–connection code 107W ,
between components 1714 and 261.
Are the connections correct?
NO
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.
NOCarry out fault finding on the UCH (see 87B,
Passenger compartment connection
unit).
NO
Check the voltage on connection BPT
(Scénic II ph2, Kangoo 2, Trafic II ph2),
13W (Espace IV ph2) of component 1714.
Is the voltage correct?
YESNO
YES
Contact Techline.
BIC_V04_ALP6/BIC_V14_ALP6