Code 21 created by the ECU itself ? Is that possible ?

[ka24eracer]

Like I said in the title , I got a code 21 ( Ignition signal ..) I just replace the igniter by a Z32 one for the same reason .

The old igniter did not passed the test so I went ahead and replace it . Still no spark... I double check the wiring , grounds...

My last idea is to replace the ECU , but I I guess I would have more codes or something else not working in the car if the ecu was the cause ? The injectors are opening fine , fuel pressure is there...

Also , there is a chip in the ecu (came like that from japan) but the car already started about a week ago so...Any help would be greatly appreciated , spring is coming soon
Modified by ka24eracer at 3:56 PM 2/29/2008

[ka24eracer]

Its an 91 240sx with a RB20det , if it can help .

[ka24eracer]

Updates : There is 12v going to each coil but still no spark. I doubt that the 6 coil packs are dead at the same time , so there is something missing...

Also , the ecu LED rarely lighten up , but it receive constant 12v...By the memory wire . I see the LED flash as fast as when it throw a code , but only one time every 30 seconds...

Ground issue ? Causing the ignition to stop working , but with the injectors working fine ?? I need advices ...