ca18det_ae86 Posted November 15, 2009 Report Posted November 15, 2009 hey peoples . getting more and more frustrated daily . i just completed a 4ac to 4age 16v conversion . i got the wiring harness all connected and all the plugs in . my delema is when i wired up the last pinout out (14pins) i can't get any signal from that side of the computer , its al dead , i checked if theres power from igntion goin 2 the ecu and there is , so my problem is y isnt there power leaving the ecu 2 the motor and gettin things going? ive checked fuses etc etc . can i have a blown ecu , but the ecu was completly running before , is it possible just 4 a ecu to f@$k up like that? what checks can i do , or any ideas u can give me guys would be great thanks 4 ur time again Quote
beerhead Posted November 16, 2009 Report Posted November 16, 2009 Hey, It's a bit hard trying to work out what your issue is atm without seeing what you've done. Power up the following - -TVIS - Ignition 12V to 1 pin -Injectors - Ignition 12V to 1 pin -Coil and igniter - Ignition 12V -ECU plug 2 pins - Ignition 12V and 1 - 12V const The ECU then switches ground using an NPN transistor to complete the circuit on the injectors and igniters, it doesn't supply 12V to anything. The other possibility is the engine harness main ground not being bolted to the intake. You probably should have the coil and igniter wired through a relay on a separate circuit directly to the battery to reduce interference too. Quote
ca18det_ae86 Posted November 16, 2009 Author Report Posted November 16, 2009 Hey,It's a bit hard trying to work out what your issue is atm without seeing what you've done. Power up the following - -TVIS - Ignition 12V to 1 pin -Injectors - Ignition 12V to 1 pin -Coil and igniter - Ignition 12V -ECU plug 2 pins - Ignition 12V and 1 - 12V const The ECU then switches ground using an NPN transistor to complete the circuit on the injectors and igniters, it doesn't supply 12V to anything. The other possibility is the engine harness main ground not being bolted to the intake. You probably should have the coil and igniter wired through a relay on a separate circuit directly to the battery to reduce interference too. really appreciate your help man i got her running 2day . cheers guys 4 the info Quote
beerhead Posted November 17, 2009 Report Posted November 17, 2009 Great to hear its a goer. You sort out a throttle cable for it? Quote
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