2008 RENAULT SCENIC light

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 -6V1 MR-372-J84-86D050$010.mif
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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-10V1 MR-372-J84-86D050$030.mif
86D
BIC
Vdiag No.: 14
Role of main components
–Multimedia network interface unit: enables information to be exchanged between the "vehicle" and "multimedia"
multiplex networks.
The multimedia network interface unit receives various signals from the vehicle CAN (speed, status of exterior
lights) and retransmits them for the radio via the Multimedia CAN.
The multimedia network interface unit transmits the activation signal to the radio and to the other computers
participating in the multimedia function when the user switches on the radio or starts the vehicle.
–Display: displays various multimedia system data such as the station selected, time, CD listing and satellite
guidance information.
–Steering column switch: provides access to various functions of the multimedia system.
–Speakers: relay the sound from the multimedia system into the vehicle.
–CD changer: enables compact discs to be loaded and music to be relayed to the receiver.
–AM/FM aerial: receives radio signals.
–GPS aerial: receives various data transmitted by satellites.
–Radio/navigation computer: manages the various multimedia system functions according to user requests and
transmits audio data to the vehicle via the speakers.
–AM/FM aerial amplifier: improves the reception of AM and FM signals.
MULTIMEDIA NETWORK INTERFACE UNIT
Fault finding – Role of components

86D-25V1 MR-372-J84-86D050$100.mif
86D
BIC
Vdiag No.: 14
MAIN SCREEN
NOTESOnly carry out a conformity check after a complete check with the diagnostic tool. The
values shown in this conformity check are given as a guide.
Application conditions: Engine stopped, ignition on, and the radio switched on.
FunctionParameter or status
Checked or actionDisplay and notes Fault finding
Battery voltagePR002Battery
voltage12 V < X < 15 VIn the event of an
inconsistency, consult the
interpretation of fault DF005
Supply.
External
temperaturePR004External
temperature-40˚C < X < 60˚CIn the event of an
inconsistency, run fault
finding on the UCH (see 87B,
Passenger compartment
connection unit).
Side lightsET004+12 V Side
lightsOFF
ONIn the event of an
inconsistency, run fault
finding on the UCH (see 87B,
Passenger compartment
connection unit).
BIC_V14_CCONF
MULTIMEDIA NETWORK INTERFACE UNIT
Fault finding – Conformity check

86D-28V1 MR-372-J84-86D050$100.mif
MULTIMEDIA NETWORK INTERFACE UNIT
Fault finding – Conformity check86D
BIC
Vdiag No.: 14
FUNCTION: MULTIMEDIA
SUB-FUNCTION: DISPLAY
NOTESOnly carry out a conformity check after a complete check with the diagnostic tool. The
values shown in this conformity check are given as a guide.
Application conditions: Engine stopped, ignition on, and the radio switched on.
FunctionParameter or status
Checked or actionDisplay and notes Fault finding
Side lightsET004:+12 V Side lightsOFF
ONIn the event of an
inconsistency, run fault
finding on the UCH (see 87B,
Passenger compartment
connection unit).
LightingET007:BrightnessDAY
NIGHTIn the event of an
inconsistency, consult the
interpretation of ALP 3
Steering column switch
fault.

86D-29V1 MR-372-J84-86D050$110.mif
86D
BIC
Vdiag No.: 14
Tool status Diagnostic tool title
ET002Radio on/off button
ET004+12 V Side lights
ET007Brightness
ET009Repeat button (only on Scénic II Phase 2)
ET011+ button
ET012- button
ET017Wheel action
ET020"Mute" button
ET023Source button
ET024Mode button
ET025Telephone button
MULTIMEDIA NETWORK INTERFACE UNIT
Fault finding – Status summary table

86D-36V1 MR-372-J84-86D050$150.mif
86D
BIC
Vdiag No.: 14
NOTESOnly refer to the customer complaints after performing a complete check using
the diagnostic tool.
NO DIALOGUE WITH THE COMPUTER ALP 1
THE MULTIMEDIA SYSTEM DOES NOT SWITCH ON ALP 2
STEERING COLUMN SWITCH FAULT ALP 3
EXTERNAL TEMPERATURE DISPLAY FAULT ALP 4
BACKLIGHTING DOES NOT CHANGE WHEN THE VEHICLE LIGHTS ARE
SWITCHED ONALP 5
MULTIMEDIA NETWORK INTERFACE UNIT
Fault finding – Customer complaints

86D-42
AFTER REPAIRCarry out a complete check with the diagnostic tool.
V1 MR-372-J84-86D050$160.mif
MULTIMEDIA NETWORK INTERFACE UNIT
Fault finding – Fault Finding Chart86D
BIC
Vdiag No.: 14
ALP 3 Steering column switch fault
NOTESSwitch on the + after ignition feed to enter fault finding mode with the computer.
Refer to the Conformity check and to the interpretation of the following statuses:
–ET002 Radio on/off button,
–ET004 +12 V Side lights,
–ET007 Brightness,
–ET009 Repeat button (only on Scénic II Phase 2),
–ET011 + button,
–ET012 - button,
–ET017 Wheel action,
–ET020 Mute button,
–ET023 Source button,
–ET024 Mode button,
–ET025 Telephone button.
BIC_V14_ALP3