MULTIMEDIA
Fault finding - Interpretation of faults
86C
86C-28
NAV 4R
Program no.: 0000
Vdiag No.: 24
DF035
PRESENT
OR
STOREDCOMPUTER/FOLD-OUT UNIT CONNECTION
CO.1 : Short circuit or open circuit to + 12 V
NOTESConditions for applying fault finding procedures to stored faults:
Apply this fault finding procedure if the fault reappears as present or stored after it has
been cleared and the ignition has been switched off and on again.
Special note:
If the vehicle does not have a fold-out unit, check the 4R radio navigation computer
configuration (see Configuration and programming).
The screen does not deploy or there is no display on the instrument panel.
Apply the following fault finding procedure only if the vehicle is equipped with a fold-out
unit and a dot matrix display on the instrument panel (top of the range Mégane II
phase 2).
Use the Wiring Diagrams Technical Note for the Mégane II.
Check the condition and connection of the connectors of components 261, 1303 and 247 (bent pins, bad
contacts, etc.).
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.
Manipulate the wiring harness in order to produce a change in the fault status (present → stored).
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 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 REPAIRDeal with any faults displayed by the diagnostic tool.
Clear the faults from the 4R radio navigation computer memory using command RZ001
Fault memory.
NAV4R_V24_DF035
MULTIMEDIA
Fault finding - Conformity check
86C
86C-29
NAV 4R
Program no.: 0000
Vdiag No.: 24
Fault finding - Conformity check
MAIN COMPUTER STATUSES AND PARAMETERS
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
1
Power supplyET001:+ 12 V after
ignition feedPRESENTIn the event of a fault, refer to
the interpretation of status
ET001 + 12 V after ignition
feed.
2ET002:+ 12 V
accessories
feedPRESENTIn the event of a fault, refer to
the interpretation of status
ET002 + 12 V accessories
feed.
3ET003:+ 12 V side
lights feedPRESENT
ABSENTIn the event of a fault, consult
the interpretation of status
ET003 + 12 V side lights
feed.
4PR001:Battery
voltage11 V < PR001 < 14 VIn the event of a fault, refer to
the interpretation of
parameter PR001 Battery
voltage.
5Vehicle
speedPR002:Vehicle
speedUnit: km/hIn the event of a fault, consult
the interpretation of
parameter PR002 Vehicle
speed.
6External
temperature
sensorPR006:External
temperaturePR006 = External
temperature sensor ±± ± ±
5 °° ° °
CIn the event of a fault, refer to
the interpretation of
parameter PR006 External
temperature.
7Angular
position
sensorPR009:Angular
positionUnit: *d/s
This parameter determines
The angular speed when
cornering.In the event of a fault, consult
the interpretation of
parameter PR009 Angular
position.
8Satellite
receptionPR008:Satellite
number
receivedIn an open area, the
number of satellites
received should be greater
than 3 for the system to
operate correctly.In the event of a fault, consult
the interpretation of
parameter PR008 Number of
satellites received.
9OffET004:RADIO ON
signalSTILL PRESENTIf the fault is still present,
contact Techline.
NAV4R_V24_CCONF
MULTIMEDIA
Fault finding - Conformity check
86C
86C-30
NAV 4R
Program no.: 0000
Vdiag No.: 24
Sub-function: USER SELECTION
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
1
Steering
wheel
controlsET006:+ buttonPRESSED
RELEASED
In the event of a fault, consult
the interpretation of statuses
ET006 + button, ET007
- button, ET036 MUTE
button, ET008 Top button,
ET009 High button and
ET010 Low button. 2ET007:- buttonPRESSED
RELEASED
3ET036:MUTE buttonPRESSED
RELEASED
4ET008:Top buttonPRESSED
RELEASED
5ET009:High buttonPRESSED
RELEASED
6ET010:Low buttonPRESSED
RELEASED
7
Front panel
buttonET026:Radio on/off buttonPRESSED
RELEASED
If the fault is still present,
contact Techline. 8ET027:CD eject buttonPRESSED
RELEASED
9ET028:Tone buttonPRESSED
RELEASED
10 ET029:Voice synthesiser
buttonPRESSED
RELEASED
11 ET030:Station
preselection buttonPRESSED
RELEASED
12 ET014:Source buttonPRESSED
RELEASED
13 ET032:Navigation buttonPRESSED
RELEASED
MULTIMEDIA
Fault finding - Conformity check
86C
86C-31
NAV 4R
Program no.: 0000
Vdiag No.: 24
Sub-function: USER SELECTION (CONTINUED)
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
14
Front panel
button
(continued)ET033:Directional buttonPRESSED
RELEASED
If the fault is still present,
contact Techline. 15 ET034:Mode buttonPRESSED
RELEASED
16 ET039:Front panel rotary
button actuationPRESSED
RELEASED
17Steering
wheel
controlsET037:Satellite wheelA variation from 0 to
+ 3 in one direction and
from 0 to - 3 in the
other direction
confirms that the wheel
is operating correctly.In the event of a fault, consult
the interpretation of status
ET037 Satellite wheel.
18Front panel
buttonET038:Front panel rotary
button
If the fault is still present,
contact Techline.
19CDAC022:CD ejectionThis command is used
to eject the CD from
the CD reader.
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.
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.
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
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