Distributorless ignition (I'm new around here)

[Frank F Parker]

> The Northstar diagrams I've seen show everything to be inside the PCM, no
> external module.
> Any one know for sure on the Olds?.
> Bruce
> 
> 
I have a 98 Northstar STS engine/trans that I am using in a midengined
conversion. It has an Ignition Control Module with built in coils.
My shop manuals show the following: The ICM has 4 connectors, C1, C2, C3
and C4.

	C1	a,b	573, 574 GM wire numbers	Crank pos, A
		e,f	836, 1800			Crank pos, B

	C2	a	1551				ground
		c	839				ignition

	C3	a,b	633, 632			Cam pos

	C4	a	647				24x spark ref
		b	630				cam sig
		c	430				fuel cont
		d	424				bypass
		e	423				ign control
		f	453				ref low

Knock sensor goes to PCM.

I am NOT using this with the GM STS pcm that I have but with a
SpeedPro. It connects just fine using diagrams from them. 

regards,

frank parker


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