Need some guidance

Hello every one. New to the forum and need some help. I have an opportunity to buy a 08 tundra crew max 5.7 with 80k on it for dirt cheap. Just have to get it running. Almost all the dash lights are flashing and it will crank but won’t fire. Truck ran fine and then wouldn’t start.

after down loading all data and testing the actuators I didn’t see any problems. So I went with the connected causes and one thing it said was the ECM was bad. So I bit the bullet and bought a new one and that didn’t work. If any of you have some pointers I’d like to hear them thanks.

 

Inspect engine wiring harness, to include under the intake. Research rodent damage.

 

So I ran through the harness and couldn’t see any obvious signs of bad wires. Ended up diving into the mass air flow code and found that the integration relay is open along with high resistance on the ground for the plug on the mass sensor, along with high resistance to ground on the integration relay harness.. bad ground strap?