HELP!! My Tacoma doesn't start

Hi
I have an issue with my 2013 1GRFE tacoma, I replaced the Engine room main harness and the engine harness too due to damage by burn but the truck doesn't start actually the fuel pump is not activated when I turn the ignition switch on
I checked the fuse, pump and relay all of it is working properly. I tried to scan the engine codes but the communication between the scanner and the computer fails, it seems that the ECU is not working porperly or the power is not reaching the ECU
Do anybody knows what else I can do to validate if the computer is damaged or if the voltaje is not feeding the ECU properly
Is there somebody who has the electrical drawings of the ECU and is willing to share it with me please?

I will apreciate any support

 

Welcome!

 

By chance does it start up for a second or two and then shut off and only crank??

 

If you replaced the ECU as well, try following this procedure to reset the immobilizer
Try this procedure:

1. Disconnect battery
2. Swap new ECU into truck
3. Paperclip across pins 4 & 13 of 16-pin DLC3 (AKA: OBD2) connector
4. Reconnect battery
5. Hook up battery charger
6. Turn on ignition
7. Wait 30 minutes (use a timer, has to be at least 30 minutes)
8. Turn off ignition
9. Remove jumper from DLC3 connector
10. Try to start the truck

If it starts you’re done.

 

Thanks I will try that

 

Please keep us posted, im curious what's causing your issue..