2006 mustang door triggers

Ok..you definatly have a problem and I feel for you. It is difficult to troubleshoot this specific problem not being under the dash but I will attempt with some advice.

You should only be using the domelight supervision wire for door trigger which is negative,  light green w/ yellow located at the smart junction box in the gray 26 pin plug, pin 25 , so forget all the diode stuff..not neccesary on that vehicle. If you did this already and are still having problems it should only be 2 possible causes... you are connected to the positive door trigger input wire of the R/S brain..which would cause some of the issues you describe...or there is another problem with the unit or it's wiring.

Of course I assume you doubled checked everything with a DMM..a few times to verify all your main connections are reading as they should be and you have a good solid paint free ground.

As far as it not remote starting properly....well if it is remote starting at all..which you cliam it does..it is pretty safe to assume your main power wires are good and the brain is functioning. So we need to delve into what prevents the unit from remote starting..plain and simple. If all your shutdown wires are proper we have to look elsewhere.

One possibility..for some reason that remote start unit will not start if the door trigger wire has a signal on it..which would happen if you used the wrong door trigger wire. I have not seen this..usually the hood wire only prevents remote starting..but to check if this problem is related to the door..disconnet the trigger wire and see if the problem persists.

Another possiblity is the starting problem is unrelated to the door trigger problem..so I would look towards the bypass module as a culprit...check the wiring to that and try a different brand or type bypass module if it appears suspect.

Hope this helped..if not at least I tried.

Best of luck with it. 

When you unlock with the transmitter?If so, and  you have a starter kill installed, it sounds like you may have the starter wire of the remote start on the wrong side of the stater kill.

I've never heard of a bcm shutting down like this on a mustang, even if this were true, when the car is remote started 12 v is supplied to the ignition which in turn would wake the (sleepy bcm). I work on a ford lot, and have done 15 or so remote starts on mustangs, and about 300 alarms and have never seen a problem like this. I would definately recommend taking the car to a professional and have them diagnose the problem.

mikvot is on the money again..and as far as the BCM sleeping I am also unaware of that on these later fords...The GEM can have a problem with alarms due to falling asleep.,.but the only sympton that causes (I used to go thru this with some of the f150's and exploders) is it would not let the doors unlock with the remote until woken up...nothing to do with remote starting. These mustangs have whats called an SJB..smart junction box....never heard of falling asleep issues with those.

Using the domelight supervision wire eliminates the need to diode isolate the 2 door wires and can prevent false alarming in some cases but still within all reason should have nothing to do with remote start problems. Unless something new and strange is on this mustang and not on any other I have worked on.