Page 11 of 34
RADIO
Connections
86A
86A - 11V2 MR-372-J84-86A000$495_eng.mif
RADIO
Connections
To allocate the tracks for the different functions that are connected to the radio (CD changer, steering wheel control,
display, aerial), refer to the Wiring Diagrams Technical Note corresponding to the vehicle.
Radio: see Wiring diagrams Technical Note, vehicle, code 261
CD changer: see Wiring diagrams Technical Note, vehicle, code 1272
Display: see Wiring diagrams Technical Note, vehicle, code 1127
For displays which are connected to the instrument panel, the code is 247
Steering wheel control: see Wiring diagrams Technical Note, vehicle, code 325
Aerial: see Wiring diagrams Technical Note, vehicle, code 886
MR-372-J84-86A000$495_eng.mif
Page 15 of 34

RADIO
Fault finding chart
86A
86A - 15V2 MR-372-J84-86A000$792_eng.mif
ALP 2 The radio does not operate when the ON button is pressed
Press the radio's ON button.
Is the display working?
(backlighting)
Yes
Press the radio's ON button.
Is the volume 0 or mute?
Yes
Disconnect the mute control wire from the
hands-free kit (connection 107 D) (see
Wiring diagrams Technical Note, vehicle,
code 692)
No Check the radio fuse
(see Wiring diagrams
Technical Note,
vehicle, code 260).
No
Is the fuse sound?
Yes
Check the continuity of
connections BCP3 and
MA0, (see Wiring
diagrams Technical
Note, vehicle, code 261)
Yes
No
Is the wiring
harness sound?
Yes
Replace the radio.
NoCheck and test whether one of the speaker
tracks has short circuited or earthed from
the disconnected radio connector using
a multimeter, connections 34A to 34H
(see Wiring Diagrams Technical Note,
vehicle, code 189 to 192 and 365 to 366)
Replace the
fuse.
Does the radio
switch on?
Fault solved
Replace the wiring or
repair it if the repair
procedure exists.
Page 16 of 34
RADIO
Fault finding chart
86A
86A - 16V2 MR-372-J84-86A000$792_eng.mif
ALP 2
CONTINUED
No
Is there a short circuit on
one of the lines?
Yes
Check the speaker concerned
using a multimeter.Replace the radio.
No
Is the speaker
short circuited?
Yes
Replace the faulty speaker. Using a multimeter, check the
continuity and insulation of the
wiring.
Test OK?No
Replace the wiring or repair
it if the procedure exists
Yes
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 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.