I have this issue on a 2007 hyundai santa fe also. Cranks but will not start. Spark is good, fuel pump is good. no codes displayed. Injector pulses from signal wire light up at first maybe once but then nothing. I keep seeing that only the canadian manufactured hyundai santa fe’s have the immobilzer ring… but looking through mitchell1 repair i see there is a smartra system on the american hyundai santa fe’s.
I swapped ecu’s and will try reprogramming the key or immobiliser to see that will fix the injectors not firing like they should.