Yes, I have a P1260 code which returns immediately it is cleared. There is reference to this in the shop manual where it says that unless the originating fault has been rectified the code will be re-flagged with 3 to 4 seconds. This seems to be happening.
There is something wrong in the immobiliser system but as you know, several modules are involved. I’m trying to be logical in my approach but the symptoms are confusing. If I re-sync the ECM & BPM and then re-programme the keys the car will start up each time, maybe for a few days, maybe only once or twice. Then it won’t crank. Once it won’t crank it will not start unless there is some intervention from me.
I discovered that if I did a hard reset it would start once but not a second time until another hard reset. Very occasionally it will crank but not start which seemed to me to point to the ECM because that controls ignition and fuelling whereas the BPM signals the start relay to operate. I changed the ECM but it made no difference to the fault.
To grab the low hanging fruits I tried a brand new fully charged battery and also I changed the exciter ring in the ignition barrel. Neither made any difference.
So I’m now trying to methodically work through the system for supply volts and grounds and checking the interconnecting cables as some of them have splices.
I’ve now got stuck because although I have a rough idea of the location of the KTM, I can’t see it or even its connector. There is no reference to replacing it that I could find either in the shop manual or JTIS so any help in what needs to be removed to get at it would be very much appreciated.