80 Series starts and then dies 7 seconds later (1 Viewer)

[CRlandcruiser]

The cruiser is back at the mechanic. was working fine for a while. took it in for belts to be tightened. now the issue of starting and stopping 7 seconds later is back.
when he checks the computer is says its the immonbilizer issue? can i bypass? any suggestions?

 

[Kernal]

Does your vehicle have an aftermarket theft alarm system installed??

 

[Michael Hanson]

Hi, Have you looked hard at all the wiring starting at the fuseable links going all the way to the gas tank?

 

[CRlandcruiser]

update. Supposedly he replaced the ECU with another one and it is now working fine. going to pick it up today and see. But seems like the issue was my ECU/Immobilizer. I have a feeling my caretaker jump started my vehicle and perhaps had the cables crossed. might of fried the system?