Page 17 of 34
RADIO
Fault finding chart
86A
86A - 17V2 MR-372-J84-86A000$792_eng.mif
ALP 3The radio does not switch on automatically
or switches off after 20 minutes
Check that the system is operating correctly.
–Connect the + accessories feed,
–Switch on the radio,
–Cut the + accessories feed; the radio should switch off
–Restore the + accessories; the radio should switch on.
Yes
Has the fault disappeared?
End
No
Check the + accessories feed using a
multimeter.
No
Is there + 12 V on
connection SP2?
Yes
Replace the radio.Check supply fuse 1G (15A)
(code 260).
No
Are the fuses sound?
Yes
Replace the fuse.
Replace the radio.
Page 18 of 34

RADIO
Fault finding chart
86A
86A - 18V2 MR-372-J84-86A000$792_eng.mif
EXCEPT ESPACE IV, SCENIC II
ALP 4The radio is switched on, but the display and control satellite do
not operate
The radio operates but the
display does not light up.
Check the functions of the display that are not
connected to the radio by switching on the +
side lights feed (screen backlighting and
exterior temperature).
Is there anything
displayed on the
screen?No
Disconnect the aerial
amplifier
Yes
Check the continuity and
insulation of the wiring between
the radio and display using a
multimeter (see Wiring
diagrams Technical Note,
vehicle, code 261).Is there anything
displayed on the
screen?No
Check the display supply
(the fault is not associated
with the radio)
Yes
Check the continuity and insulation of the
34AM connection
NoNo
Are the tests OK?
Are the tests OK?Replace the wiring or repair it if the
procedure exists.
Yes
YesReplace the aerial
amplifier.
Disconnect then reconnect the
display. If the fault is still present,
replace the display.
Page 19 of 34

RADIO
Fault finding chart
86A
86A - 19V2 MR-372-J84-86A000$792_eng.mif
The radio operates but the
display does not light up.
Check the functions of the display that are not
connected to the radio by switching on the +
side lights feed (screen backlighting and
exterior temperature).
Is there anything
displayed on the
screen?No
Disconnect the aerial
amplifier
Yes
Check the continuity and
insulation of the wiring between
the radio and instrument panel
using a multimeter (see Wiring
diagrams Technical Note,
vehicle, code 261).Is there anything
displayed on the
screen?No
Check the supply to the
instrument panel (the
radio is not at fault) See
Wiring diagrams
Technical Note,
vehicle, code 227.
Yes
Check the continuity and insulation of the
34AM connection
NoNo
Are the tests OK?
Are the tests OK?Replace the wiring or repair it if the
procedure exists.
Yes
YesReplace the aerial
amplifier.
Disconnect and reconnect the
connector connected to the
display. If the fault is still present,
replace the instrument panel.
ESPACE IV, SCENIC II
ALP 4The radio is switched on, but the display and control satellite do
not operate
Page 20 of 34
RADIO
Fault finding chart
86A
86A - 20V2 MR-372-J84-86A000$792_eng.mif
The radio operates but the radio control
satellite does not.
No
Does the remote
display operate?See ALP 4
Yes
Check that the radio control satellite is
correctly connected to the display or
instrument panel (see Wiring diagrams
Technical Note, vehicle, code 1519).
Are the satellite controls connected
correctly?No Reconnect the radio control satellite and
check the system operates correctly.
Yes
Check the resistance of the radio control
satellite using a multimeter.
Are the
resistances correct?No
Using a multimeter, check the continuity
and insulation of the wiring.Replace the satellite.
Test OK?No
Yes
Check the continuity and insulation of the
connections between the radio and the
display.
Test OK?Replace the wiring between the radio and the
display or repair it if the procedure exists.
Yes
Replace the display
ALP 5 The satellite controls do not work
Page 21 of 34
RADIO
Fault finding chart
86A
86A - 21V2 MR-372-J84-86A000$792_eng.mif
ALP 6 Radio reception faults
Poor radio reception.
Yes
Does the radio scan without
tuning in FM?Fault external to the radio
(transmitter synchronisation).
Are there occasional gaps
(< 1 second loss of sound)
in FM reception? Yes
The vehicle is in an area of
poor reception. The radio
takes longer to find an
adequate transmitter.
Disable AF in Expert
mode.
Yes
Does the radio
crackle?
No
The vehicle is in an area of poor
reception.Switch off the Heated rear
screen function.
Is the level higher?No
Yes
The fault is associated with micro-
breaks on the rear screen de-
icing circuit.With the vehicle outside
and in an area with good
reception, test the
reception level in the
radio's fault finding menu.
Page 22 of 34
RADIO
Fault finding chart
86A
86A - 22V2 MR-372-J84-86A000$792_eng.mif
ALP 6
CONTINUED 1
Is the reception
leve good?No Without moving the vehicle,
compare the level with that of a
Long Wave station.
Yes
Check whether the poor
reception is localised or
permanent and on all
stations.Is the level higher?No
Check the vehicle
aerial.
Yes
Is the fault
permanent?No
The vehicle is in an area of poor
FM reception.
Yes
Check the continuity and
insulation of the wiring between
the radio and the aerial amplifier.
Carry out the tests on the aerial.
Test OK?NoReplace the wiring or repair it
if the procedure exists.
Yes
Replace the radio
Page 23 of 34
RADIO
Fault finding chart
86A
86A - 23V2 MR-372-J84-86A000$792_eng.mif
ALP 6
CONTINUED 2
Hold the aerial wire near to the radio.
Is the level
higher?No Replace the aerial amplifier.
Yes
Check the continuity and
insulation of the wiring
between the radio and the
aerial.
Test OK?No Replace the wiring or repair it
if the repair procedure exists.
Yes
Replace the radio.
Page 24 of 34
RADIO
Fault finding chart
86A
86A - 24V2 MR-372-J84-86A000$792_eng.mif
ALP 7 The volume does not increase with the vehicle speed.
The SDVC (speed-dependent volume
control) function does not work.
Check the audio equipment
configuration (Expert mode). Set the
SPEED curve to 5 and run a test when
driving at a speed greater than 48 mph
(80 km/h).
No
Does the volume change?
Yes
The fault has been rectified. Check the signal on
connection 47F (see wiring
diagrams Technical Note,
vehicle, code 261) using a
multimeter. The voltage should
vary depending on vehicle
speed. Reset the control to: CURVE 2.
Yes
No
Does the signal increase?
YES
The fault is not associated with
the audio equipment. See MR
Fault finding corresponding to
vehicle, 38C, ABS, Conformity
check.Replace the radio with the
approval of your Techline.