fj510 Posted July 5, 2023 Report Share Posted July 5, 2023 Hey Guys, I'm currently wiring up my Datsun 1600 running an fj20 turbo with an older Atom G4+. The car runs 4x LS1 coils and the original dizzy for a crank trigger. Can i grab some help as to what 4 wires out of the dizzy go to trigger 1 and 2 in the atom header. Also what settings in the ignition needed to get it running before a tune. I'm guessing something similar to the SR20 CAS settings in the help menu. Much appreciated, Thanks. Some info below borrowed from another site: Distributor The distributor is located under the intake plenum. A dual optical (Hall Effect) trigger is used on this engine with a slotted disc inside the distributor. The trigger has 4x slots spaced at 90 degrees with 1x slot larger than the others. The Home (sync) has 360x slots (1x every 2 degrees). This trigger system does support Sequential fuel control and Direct Fire ignition. Wiring Wire Colour Description Red 12V+ Switched Green Trigger Black Signal Ground White Home Quote Link to comment Share on other sites More sharing options...
Adamw Posted July 5, 2023 Report Share Posted July 5, 2023 Red to Ign switched 12V supply (same as ecu or injectors etc). Black to sensor ground (Pin 7 or 24). White (sometimes green/black) to trigger 1 Green (sometimes green/yellow) to trigger 2 Set trigger mode to Nissan 360 opto and I think the widest slot setting will be 9deg. You can use the ECCS sync test to confirm. Im not sure of the offset but try -90. Quote Link to comment Share on other sites More sharing options...
fj510 Posted July 5, 2023 Author Report Share Posted July 5, 2023 Thanks Adam, really appreciated your quick response. Quote Link to comment Share on other sites More sharing options...
fj510 Posted January 1 Author Report Share Posted January 1 Hey Guys, Hoping to get some more help, i have just performed at ECCS sync test and getting the following results. Trigger 1 No and Trigger 2 Yes I have just removed the dizzy and checked all wiring for continuity with no issues, wired as per above info. When wiring the ecu i also fitted a new crank sensor, part number cas-016m recommend by the fj20 forums. Any help to why i wouldn't be getting a green YES on trigger 1 would be muchly appreciated. I tried to do a trigger scope but it seems the Atom doesn't have this feature. Thanks Quote Link to comment Share on other sites More sharing options...
Adamw Posted January 1 Report Share Posted January 1 Has it got the stock disc in it? If you manually set the widest slot to 9deg and turn test ECCS sync off, do you then have trig 1 sig or RPM showing when cranking? Quote Link to comment Share on other sites More sharing options...
fj510 Posted January 2 Author Report Share Posted January 2 Thanks Adam, Yeah it runs the stock disc, I will try your suggestion and get back to you with what happens Quote Link to comment Share on other sites More sharing options...
fj510 Posted January 3 Author Report Share Posted January 3 Hey Adam, Just set the widest slot to 9 degree, no rpm or trig 1 sig showing when cranking with ECCS off, any other ideas? Thanks Quote Link to comment Share on other sites More sharing options...
fj510 Posted January 3 Author Report Share Posted January 3 I just tried swapping trigger 1 and 2 wires at the ecu header and tested again. I got all Green lights on Trigger 1, Trigger 2 and ECCS Sync? Now when ECCS is offer I'm getting an rpm speed of 200ish on cranking. What do you think mate? all good? Maybe this sensor i fitted for a D22 Navara is wiring backwards from the FJ20? Before starting do you recommend doing a base timing test? Thanks again Quote Link to comment Share on other sites More sharing options...
Adamw Posted January 3 Report Share Posted January 3 Yes, that sounds like it is happy now. You can try starting it with the offset at -100 and if it starts it is easier to check the timing while it is idling. It it doesnt start then you will need to get a timing light connected and adjust the offset until the timing is somewhere close. Then check it again once running. Quote Link to comment Share on other sites More sharing options...
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