The Electrics, Dashboard and Heater 19 Radios etc
38 Citroen XM Internet Reference Version 1.0
3/3/99
being allowed another 3 attempts.
two aerials
Just to put clear something that was said about ’diversity’ regarding the Clarion radio in early XM’s.
Diversity is in fact concerned with picking up the best possible signal for your radio. Most of us know
that XM’s have two aerials, one on the roof and also the rear screen heater element. The radio unit in
the centre console has two tuners which are always tuned into the same frequency, the frequency that
you select. A chip in the radio ’listens’ to both resulting demodulated signals and decides which signal
will give the best quality sound. The radio switches very quickly to the best signal. The switching is not
noticeable. The further apart the two aerials are the better. If one of your aerials has suffered reduced
performance it may never be selected.
Clarion and codes
Thanks to everyone who made suggestions about sorting out the radio on my XM - I think we now have
is sorted. I spoke to Clarion who agree that the machine is asking for a code and they confirm that if I
take the car ro any Citroen dealer they can re code it. Apparently Citroen do not keep records, but
Clarion do and providing it is a Citroen dealer who faxes the information through to them they can solve
the problem, I am going tomorrow so I let you know the cost !
Whilst speaking to Clarion’s technical dept - who were extremely helpful - I asked about CDs, the chap
informed me that subject to the Radio you have fitted, some do not support CD control (the PU-9358
doesn’t) you might also need a FMC200 controller to enable the steering wheel controls to work; it
would appear that this unit - whatever it is - changes the CD signal to a radio frequency and allows the
CD to be played via the radio controls, sounds highly technical to me, but he said it worked very well.
If anyone is interested the phone number for Clarion is 01793 870400.
FMC200 controller
> you might also
>need a FMC200 controller to enable the steering wheel controls to work; it
>would appear that this unit - whatever it is - changes the CD signal to a
>radio frequency and allows the CD to be played via the radio controls, sounds
>highly technical to me, but he said it worked very well.
There is a trick used on some CD players which enables it to be connected to the radio via the aerial.
Basically you feed the output of the CD player into a small FM transmitter which is connected in via the
aerial cable, you then tune this signal in on a spare radio preset and bingo you have a hifi sound
connection without cutting into wires etc. I guess that this is what the guy is talking about.
12 CD changer
You also have (in my case) a 12 disc CD multichanger with remote control, through a very normal
looking head unit - making it nick proof, as they don’t know it’s there! The remote is about the size of a
credit card, box of matches thickness, and on the end of a nice long cable.
Tune the radio into the whatever frequency, turn the CD on, and you’re laughing! All you need to provide
is power, and stick the aerial cable in.
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