TheFew Posted September 19, 2015 Share Posted September 19, 2015 Hi all,I have a 2007 MKIV Mondeo which has a Sony 6CD 2nd Generation stereo.Since owning the car I have noticed that when the stereo is on and thecar hits a bump that the stereo would sometimes turn itself off.Sometimes it will also turn itself on while driving. More recently itfails to acknowledge the fact that the ignition is on and when you startthe car the display stays blank (i.e. does not show the time/date).When you turn the stereo on it says "1 hour", i.e. is does not recognisethe ignition being turned on. Also recently the reception on AM bandhas become overwhelmed by interference - which seems to switch itself onand off.So all in all I think my audio system has a wiring or perhaps an earth problem!Today I removed the stereo from the car to inspect the wiring. The firstthing that I noticed was that there was a "yellow" wire just pushedinto one of the connector holes in the wiring loom that feeds into theback of the stereo. The part of the loom (as far as I can tell) seems tobe the part that handles the signals from the controls on the steeringwheel. Tracing this yellow wire back it seems to come from a little redbox called "intelli-mute" "e11", which is presumably part of the audiomuting system related to phone call answering. Sadly however I did notrecord which hole in the connector this wire had been jammed into andthis which pin on the back of the radio it was trying to serve.Does anyone know what the purpose of this yellow wire is and where itshould be connected? I am hoping that this loose wire is the source ofmy stereo power problems.If it is not, does anyone have any ideas why my stereo may behave like this? Is it a known issue? The stereo. Steering wheel controls. The yellow wire. This was loose and pushed into the bottom left black connector (which has another two wires in it, as above). Where the yellow wire goes. The unit that the yellow wire goes to. Also, while exploring the wiring I noted a red and black wire near thehandbrake/under the cup holder (near the restraint controller) which hasbeen cut. Any idea what this wire does and if it is significant at all? The cut black and red wire. Any advice gratefully received.ThanksPJ Quote Link to comment Share on other sites More sharing options...
TheFew Posted September 21, 2015 Author Share Posted September 21, 2015 Hi again, So I have been able to find a wiring diagram for the quad lock connector at the back of the stereo on the Ford Wiki. All I need now is a wiring diagram for the "intelli-mute" box, so I know the function of the yellow wire. Can anyone help? Thanks Quote Link to comment Share on other sites More sharing options...
Stoney871 Posted September 24, 2015 Share Posted September 24, 2015 That box is the canbus decoder for aftermarket radios like Eonon. The cut cable by the handbrake was most probably for the sensor that allows DVD radios to know you are stopped and therefore not breaking the law by watching films on the move. You can safely ignore them if you have a standard radio fitted. What I would do is strip out anything attached to that red box from the quadlock back and reinstate any loose blocks you may find of a similar design, that block with the 2 wires on looks like it's for the aftermarket kit as well as that block should have wires to slots 1,5 and 7 (that block is for phone sound through your speakers). Quote Link to comment Share on other sites More sharing options...
Stoney871 Posted September 24, 2015 Share Posted September 24, 2015 Quote Link to comment Share on other sites More sharing options...
TheFew Posted September 27, 2015 Author Share Posted September 27, 2015 Stoney871, many thanks for the advice. I have now removed the canbus decoder and restored the car to the original stereo wiring, as you can see below: The left overs... So now the stereo wiring is a lot simpler. Sadly however the radio still does not recognise when the ignition is on and still comes up with "1-hour". The radio also does switch itself off randomly when driving and the AM signal is still overwhelmed by electrical noise. So i summary I still have the same problems as before, but less wiring to worry about. Any suggestions gratefully received!! The radio failing to sense the time from the dashboard clock. Sometimes it auto synchronises and sometimes just this.. Quote Link to comment Share on other sites More sharing options...
Stoney871 Posted September 27, 2015 Share Posted September 27, 2015 Could be that the ignition live and battery cables have been switched. 1 Quote Link to comment Share on other sites More sharing options...
TheFew Posted September 28, 2015 Author Share Posted September 28, 2015 Hi, I am 95% sure that I checked the wires and their colours against the Quadlock wiring diagram on the Ford Wiki and all seemed ok. Quote Link to comment Share on other sites More sharing options...
imurvai Posted October 1, 2016 Share Posted October 1, 2016 Hi, I'm having the same problem with my Sony 6CD HU. have you found the solution for that? Quote Link to comment Share on other sites More sharing options...
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