Ve Commodore SV6 LY7 Not Starting

[BiggleBus]

Hi, I have just done a engine swap in my sv6 to replace my blown one. When I try to start the car however, nothing happens. No cranking. The fuel pump primes and ignition turns on but nothing happens when I try to actually start it. I have had to hotwire it to start it. The center console doesn't have power to it anymore as well. Could this be caused by the immobilizer?

 

[hookalaya]

If you turn the ignition on and leave it on for about 10-30mins the immobilizer will overheat and turn off allowing you to start the car... then ul know if its a security issue

 

[krusing]

Did you use the same/original Sensors on the replacement motor?

Get it scanned,
thats a pathway to finding a solution !

 

[Fu Manchu]

You have used your old ECM haven’t you?

 

[BiggleBus]

You have used your old ECM haven’t you?

yeah its all original. BCM, ECU and everything else

 

[lout]

grab a multimeter and measure the 4 terminals at the crank relay
ignition on reds 1 bat pos, 1 battery neg to park inhibit circuit, 1 starter solenoid resistance to ground
and one ignition key start position, nothing until crank and then pos