I have read through the post and found good advice. My problem is that after replacing the ignition switch, fuel pump, fuel relay and putting in a new battery this car will not start. I have pulled a spark plug and have no spark. Warning lights do not come on and the fuel pump does not engage. Everything else appears to turn on lights, ac blower, windows etc.. Before car was parked it ran ok. After reading a few post i believe it may be the ECU but not sure. the only code showing up is P0410 (secondary air injection system). Need some advice.

 

If you have no spark then why did you replace the parts you did?

I would ck out the cam sensor and engine speed sensor (on the crank flywheel) first for no spark. Oh yeah, make sure the immobilzer is not set!

And pretty sure if the ECU doesn't see spark (tach) signal, it won't engage (turn on) the fuel pump relay. So you need to fix that problem first.

 

The P0410 is an emissions code and shouldn't have any impact on the vehicles ability to start.
Any chance while trying to start it you jumped it and momentarily had the cables reversed ??
Have you physically tested all the fuses for continuity ??

Since it sat for two years I'd do a really good visual inspection and see if you find any wires chewed on by critters. Especially the cam or crank sensor leads.

Did you check for spark at the coil too or only at the plug ??

 

Problem was fixed. Middle j fuse needed to be replaced. Thanks to all for all the help.