I was worried about that. This means we are going to need a scan tool capable of communicating with the BCM and looking at live data to see if the ignition switch state is changing when you turn the key. If the BCM is not seeing this then it will not deactivate the system. It will not set any codes because it doesn't know anything is wrong. At this point, it could be the switch, BCM, or ECM. It is in what is called full lock out mode. You sitting with the key in the on position for 15 minutes should unlock it but again, if the BCM is not seeing the switch state change then it will not unlock it.
Sorry I don't have better news but if you don't have this scan tool we are going to need to get a shop involved that can do this.
Image (Click to make bigger)
SPONSORED LINKS
Thursday, March 26th, 2020 AT 7:02 PM