Page 33 of 86
MULTIMEDIA
Fault finding - Conformity check
86C
86C-32
NAV 4R
Program no.: 0000
Vdiag No.: 24
Sub-function: Display
NOTESOnly perform this conformity check after a thorough check with the diagnostic tool.
The values shown in this conformity check are given as examples.
Application conditions: Engine stopped, ignition on.
Order FunctionParameter / Status
checked or ActionDisplay and Notes Fault finding
1Power supplyET003:+ 12 V side
lights feedPRESENT
ABSENTIn the event of a fault, consult
the interpretation of status
ET003 + 12 V side lights
feed.
2OffET004:RADIO ON
signalSTILL PRESENTIn the event of a fault, consult
the interpretation of status
ET004 RADIO ON signal.
3DisplayAC021:Display testThis command is used
to check that the
display is operating
correctly.In the event of a fault, consult
the interpretation of fault
DF031 Computer/display
connection.
Page 34 of 86
MULTIMEDIA
Fault finding - Conformity check
86C
86C-33
NAV 4R
Program no.: 0000
Vdiag No.: 24
Sub-function: Audio
NOTESOnly perform this conformity check after a thorough check with the diagnostic tool.
The values shown in this conformity check are given as examples.
Application conditions: Engine stopped, ignition on.
Order FunctionParameter / Status
checked or ActionDisplay and Notes Fault finding
1Radio
reception
qualityPR010:Radio field
intensityUnit: dBµµ µ µ
VIn the event of a fault, consult
the interpretation of
parameter PR010 Radio
field intensity.
2SpeakersAC004:Speaker testThis command is used
to perform a listening
test on each speaker.of command AC004 Speaker
test.
Page 35 of 86
MULTIMEDIA
Fault finding - Status summary table86C
86C-34
NAV 4R
Program no.: 0000
Vdiag No.: 24
Fault finding - Status summary table
Tool status Diagnostic tool title
ET001+ 12 V after ignition feed
ET002+ 12 V accessories feed
ET003+ 12 V side lights feed
ET004RADIO ON signal
ET006+ button
ET007- button
ET008Top button
ET009High button
ET010Low button
ET014Source button
ET026Radio on/off button
ET027CD eject button
ET028Tone button
ET029Voice synthesiser button
ET030Station preselection button
ET032Navigation button
ET033Directional button
ET034Mode button
ET036MUTE button
ET037Satellite wheel
ET038Front panel rotary button
ET039Front panel rotary button actuation
Page 36 of 86

MULTIMEDIA
Fault finding - Interpretation of statuses
86C
86C-35
NAV 4R
Program no.: 0000
Vdiag No.: 24
Fault finding - Interpretation of statuses
ET001
+ 12 V AFTER IGNITION
NOTESThere must be no present or stored faults.
Switch on the ignition; status ET001 should be PRESENT.
This fault finding procedure does not apply to commercial vehicles.
Use the Wiring Diagrams Technical Note for the vehicle concerned (except
commercial vehicles).
Check the condition of the + 12 V after ignition feed fuses of component 261.
Check the condition of the connectors of components 260 or 1337 and 1016 according to the location of the fuses.
If the connector is faulty and there is a repair procedure (see Technical Note 6015A, Electrical wiring repair,
Wiring: Precautions for repair), repair the connector, otherwise replace the wiring.
Using the universal bornier, check the insulation, continuity and the absence of interference resistance on
the following connections:
Mégane and Scénic:
●connection code AP43,
between components 261 and 1337.
●connection code MAO,
between component 261 and earth MAO.
Laguna:
●connection code AP10,
between components 261 and 260.
●connection code MT,
between component 261 and earth MT.
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.
AFTER REPAIRRepeat the conformity check from the start.
NAV4R_V24_ET001
Page 37 of 86

MULTIMEDIA
Fault finding - Interpretation of statuses
86C
86C-36
NAV 4R
Program no.: 0000
Vdiag No.: 24
ET002
+ 12 V ACCESSORIES
NOTESThere must be no present or stored faults.
Switch on the ignition, status ET002 should be PRESENT.
Use the Wiring Diagram Technical Note for the vehicle concerned.
Check the condition of the + 12 V ACC feed fuse of component 261 (Trafic: 662).
Check the condition of the connectors of components 260, 1016 or 1337 according to the location of the fuses.
If the connector is faulty and there is a repair procedure (see Technical Note 6015A, Electrical wiring repair,
Wiring: Precautions for repair), repair the connector, otherwise replace the wiring.
Using the universal bornier, check the insulation, continuity and the absence of interference resistance on
the following connections:
Mégane and Scénic:
●connection code SP2,
between components 261 and 260.
●connection code MAO,
between component 261 and earth MAO.
Laguna:
●connection code SP2,
between components 261 and 260.
●connection code MT,
between component 261 and MT earth.
Trafic:
●connection code SP2,
between components 662 and 1016.
●connection code MT,
between component 662 and earth MT.
Master:
●connection code SP2,
between components 261 and 1016.
●connection code NL,
between component 662 and earth NL.
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.
AFTER REPAIRRepeat the conformity check from the start.
Page 39 of 86

MULTIMEDIA
Fault finding - Interpretation of statuses
86C
86C-38
NAV 4R
Program no.: 0000
Vdiag No.: 24
ET004
RADIO ON SIGNAL
NOTESThere must be no present or stored faults.
Switch on the ignition, status ET004 should be permanently PRESENT.
Apply this fault finding procedure only if the vehicle is equipped with a display fold-out
unit and an instrument panel dot matrix display (Mégane II ph2).
Use the Wiring Diagrams Technical Note for Mégane II phase 2.
Check the condition and connection of the yellow 6-track connector of component 261 and the connector of
component 1303.
If the connector is faulty and there is a repair procedure (see Technical Note 6015A, Electrical wiring repair,
Wiring: Precautions for repair), repair the connector, otherwise replace the wiring.
Check the insulation, continuity and the absence of interference resistance on connection 34GG between
components 261 and 1303.
If the connection is faulty and there is a repair procedure (see Technical Note 6015A, Electrical wiring repair,
Wiring: Precautions for repair), repair the wiring, otherwise replace it.
Check the condition and connection of the connector of component 247.
If the connector is faulty and there is a repair procedure (see Technical Note 6015A, Electrical wiring repair,
Wiring: Precautions for repair), repair the connector, otherwise replace the wiring.
Check the insulation, continuity and the absence of interference resistance on connection 34GD between
components 247 and 1303.
If the connection is faulty and there is a repair procedure (see Technical Note 6015A, Electrical wiring repair,
Wiring: Precautions for repair), repair the wiring, otherwise replace it.
If the fault is still present, contact the Techline.
AFTER REPAIRRepeat the conformity check from the start.
NAV4R_V24_ET004
Page 55 of 86
MULTIMEDIA
Fault finding - Interpretation of parameters86C
86C-54
NAV 4R
Program no.: 0000
Vdiag No.: 24
PR009
ANGULAR POSITION
NOTESThere must be no present or stored faults.
Engine stopped, ignition on.
Use the Wiring Diagram Technical Note for the vehicle concerned.
Remove component 261 (Trafic: 662) without disconnecting the connectors.
Shake the radio/navigation computer vigorously; parameter PR009 Angular position should be above or equal
to 1 d/s.
Each time the 4R radio/navigation computer is at rest, PR009 Angular position should be very close to 0 d/s.
If the parameter does not change, contact the Techline.
AFTER REPAIRRepeat the conformity check from the start.
NAV4R_V24_PR009
Page 56 of 86

MULTIMEDIA
Fault finding - Interpretation of parameters86C
86C-55
NAV 4R
Program no.: 0000
Vdiag No.: 24
*RDS: Radio Data SystemPR010
RADIO FIELD INTENSITY
NOTESThere must be no present or stored faults.
Engine stopped, ignition on.
Tune to a known FM or AM station with the vehicle in an open area if possible.
The "Radio field intensity" corresponds to the electrical intensity of the radio signal (FM or AM) received at the
radionavigation tuner input, at the frequency currently selected. It is expressed in dB µV.
It gives an indication of the radio reception level. Below 18 dB µV, the station is considered weak and does not
appear in the list of radio stations.
A low value (< 18 dB µV) on this parameter means that:
–Either the selected station has a weak transmission in the geographical area. This may be due to the
distance from the selected station's transmitter (far from urban area, on motorways) or obstacles interfering
with the transmission of radio waves (mountainous areas, buildings, deep valleys).
–Or, if the reception conditions are good in the geographical area for the selected station, there is a fault on
the vehicle's reception system: one of the components (aerial/aerial amplifier/coaxial connection/radio aerial
connector) is faulty. In this case, refer to ALP 4.
This parameter may be used to compare two vehicles in order to determine if there actually is a vehicle fault.
Summary table of field values and their effect on radio reception:
Radio field intensityAudio
qualityRDS* decoding
(eg.: station names display)Automatic tuning/
Presence in the radio list
PR010 > 18 dBµVOK OK OK
14 dBµV < PR010 < 18 dBµVOK OKNOK
10 dBµV < PR010 < 14 dBµVOKNOK NOK
PR010 < 10 dBµVNOK NOK NOK
AFTER REPAIRRepeat the conformity check from the start.
NAV4R_V24_PR010