[healthservices]

I would start checking with the main connections first and making sure they are solid. Start with the battery, both positive and negative actually removing, cleaning and re installing the cables BOTH ENDS. This will mean removing the cover and making sure the positive post is secure AND the ground strap from the engine is secure to the frame on both ends. From there I would check the plug in at the ignition switch and then the individual grounds threw out the car. Next main grounds are under the drivers seat for the immobilizer, but make sure the battery is disconnected when checking this because if you remove the seat with the battery connected the SRS light canl pop up and you cannot erase without the proper tool. This ground is important so do not skip.

Check the other grounds and look in the manual for the locations.

Of course I'm assuming a lot has been already checked as I have not seen the car. That the ignition switch is actually good, that the fuses are all good, that here is a good strong battery, etc.