1226870 to 1227730 ecm conversion

[camaroyoungster]

Hi, I am currently getting stuff together for a dis 7730 conversion on my 85 camaro with 3.1 swap currently running on a 1226870. I need some help on the pinout conversion from the 1226870 to the 1227730. I have some done but the others I Really don't know where to go. If anyone could help that would be terrific.

Thanks, Drew

I used this website for the pinouts for both but I don't know if they are correct.

http://chevythunder.com/fuel%20injec...%20pinouts.htm

1226870------------------------>1227730
Fuel pump relay A1-->A11 Fuel pump rely
Air Switch--------A2-->C9 A/C on request---?
Canister purge---A3-->F7 Canister Purge
Egr Control-------A4-->E9 Egr sol. control
SES Control------A5-->E7 SES light
IGN-ECM---------A6-->A6 Ign. power feed
TCC control------A7-->F6 TCC control A/T
Serial Data-------A8-->A8 Serial data
Diagnostic term-A9-->E12 Diagnostic Term
Speed Sensor---A10-->?
MAT---------------A11-->F16 MAT signal
Grd.---------------A12-->?
Battery 12V.-----B1-->C16 Battery 12V
Fuel pump sig.---B2-->E13 Fuel pump Sig.
EST ref. low------B3-->D9 Est Ref. low
EST ref. in.-------B5-->D8 Est. ref.
Not used ---------B6------------------
EST Signal--------B7-->C8 EST----------------?
A/C signal---------B8-->?-----------------------?
Not used----------B9-------------------
P/N sw. signal----B10-->D16 P/N switch
MAF signal--------B11-->F15 MAP signal-----?
Not used----------B12-----------------
Not used----------C1------------------
Air control--------C2-->?------------------------?
IAC "B" LOW-----C3-->E6 IAC "B" LOW
IAC "B" HIGH----C4-->E5 IAC "B" HIGH
IAC "A" HIGH----C5-->E3 IAC "A" HIGH
IAC "A" LOW-----C6-->E4 IAC "A" LOW
Overdrive req.----C7-->?------------------------?
A/T 4th Gear-----C8-->D14 TCC 4th Gear switch---?
Fan Request------C9-->?-------------------------?
CST Signal--------C10-->E16 CST Signal
Not used----------C11-----------------------
TPS back up------C12-->?------------------------?
mode signal
TPS signal--------C13-->F13 TPS Signal
TPS 5v ref.-------C14-->A5 TPS 5v ref.
inj.2-4-6-8 "B"--C15-->?-------------------------?
Battery 12v------C16-->?-------------------------?
GRD---------------D1-->?--------------------------?
Cooling fan ctl.---D2-->?--------------------------?
Cyl. Sel.(8cyl.----D3-->?---------------------------?
Grounded
Not Used---------D4---------------------------
EST Bypass------D5-->C7 EST bypass
Grn'dm O2-------D6-->E15 O2 ground
O2 sensor Sig.---D7-->E14 O2 signal
EGR temp sw.---D8-->?----------------------------?
Not used---------D9-----------------------------
MAF Grnd.-------D10-->B6-------------------------?
Not used---------D11----------------------------
TPS 5v. grd------D12-->B5-------------------------?
CST,MAF,MAT---D13-->?---------------------------?
GRD.
Inj. 2-4-6-8"B"-D14-->?---------------------------?
Inj. 1-3-5-7"A"-D15-->?---------------------------?
Inj. 1-3-5-7"A"-D16-->?---------------------------?

[camaroyoungster]

I also found this but I don't know if it helps or not.

[neophile_17]

http://www.gmtuners.com/files/Fiero_2.8_to_7730_$88_DIS.pdf

I know this is for a Fiero but it should help you with the socket numbers/colors that a 7730 expects and it will give you a guess as to wire color. I've found that even for the same car the wire colors can vary slightly but it's a start. Good luck!

[camaroyoungster]

I have looked at that one already. I don't really know which one to use because based on the mask that I need to use, they might be different.

Drew

[neophile_17]

The only difference I saw related to the AC system which I didn't keep in either of the harnesses I built. You seem to have the EGR stuff filled in but I know there are two different systems there. I removed it.