Hi Tom and Ray,
Love your show and listen when I can. I had to remove the ECM of my 98 Toyota Avalon XLS to replace the air inlet servo motor. Now it’s back in, all connectors tight, but the car has a strong crank but no start. Security light flashes at 1-2 second intervals whether the car is locked, unlocked or cranking. Security problem? Got any answer to help me? Thanks.
I hope this helps… It’s all I could find. I think you want to use the instructions for a new module, as yours would have lost it’s memory when disconnected.
http://tfstern.com/lock1.html#q
If not post back. maybe someone more knowledgeable will be able to help you.
Thanks for the try to help, but I don’t have a Master key. I found that out several years ago and because of this, I took it to a locksmith and he disabled the engine immobilizer system so I could use any key since I realized that if I lost my valet key, I would be stuck. So something has changed and now the valet key won’t work either.