I know it seems high milage but this is a great running car. Ok here is the problem. My wife was at work and went to leave for the trip home when the car would not turn over, only the security light flashed. I obtained a factory service manual and came to the conclusion after test that the BCM was defective. It would not even go into diagnostic mode. Replaced it and it cranked up and I took it out of factory test mode. The security light is flashing anytime the key is in the on position. Checked it in the program mode and instead of it beeping once it beeps twice. Checked the available modes and all is correct. The key pads will not program (put in new batteries) and you have too you the key to unlock the car and hurry and get the key into the switch to stop the alarm from going off.
I have gone through the trouble shooting test, checked the wires it said to check and did not have any ground outs. I checked the grey wire on c-3 connector of the BCM And it gets voltage when the light comes on. I looked at the diagram and it looks like the power comes to the instrument panel then to the BCM.
Ok thats enough, any ideas?
P. S. I did replace the BCM a second time after it would not stop the light, so it's not the module.
Monday, February 25th, 2013 AT 7:59 PM