Cadillac Repair: 1990 cadilliac will crank but will not start, cadilliac, injector pulse

Question
Hi Ed. My 1990 Cadilliac Eldorado 4.5 L,the car will crank but will not start. There is 12 volts at the battery connection on the distributor also there is approx.40psi at the fuel rail,however there is no voltage at the injectors and on the in car computer it shows NO ECM DATA,codes B-120 and B-334 are both current.I also checked the wiring the ground connections but no luck.Hope you can help.           Thanks Dave

Answer
Hi,Dave

Sounds like either you have lost power or ground to the ECM or the ECM itself has failed,if the is no injector pulse or spark,then i would assume your ECM has failed,the ECM is located on the right hand side under the dash near the glove box,make sure the connections to the ECM are ok,if they are then replace the ECM.if you need more help let me know,Thanks


ED