I have a 2001 sentra gxe and it cranks but wont start..I checked the coil for spark and none of the coil are sparking. I also checked the resistance and got around 1600 ohms on the primary circuit..which seems way high..but i cant find a service manual for any 2001 or above so don't know what the spec are on them..if any one has any info please help...also the cranksensor was replaced and still wont fire. I have the wiring schematics and the ecu coils each coil...could it be the ecu at fault?

thanx ernie