1995 Saturn SC2 GM DIS

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1995 Saturn SC2 GM DIS

Postby ChevelleFan » Sun Oct 01, 2017 1:09 pm

Just thought I'd make a quick post for getting my 95 Saturn SC2 (LLO) fired up on MS2-Extra 3.4.2, 3.57 board, using the stock OBD1 ICM.

GM DIS Pinout
6pin connector:
A) 12v power (pink), needs to be hot in run & crank. Use 7.5 amp fuse.
B) 6X ref (white) -- unused, might drive a tach output?
C) EST wire (WHITE) -- used for Timing Advance signal. Wired to D14/SparkA.
D) Reference High (Purple w/white tracer) -- Tach input to MS
E) unused
F) EST Bypass wire (Tan w/black tracer) -- when 5v is applied, module will use timing signal from MS on pin C. When no signal, timing should be in limp-home 10* BTDC. I have this wired to D16 via SPR3.

5pin connector:
A) Positive crank sensor wire (yellow) -- goes to crank position sensor
B) Negative crank sensor wire (purple) -- goes to crank position sensor
C) not used
D) Reference low (red w/black tracer -- Goes to MS sensor ground
E) High current ground. Ground to the block.

Used with Basic Trigger ignition setting, with a 10 degree trigger angle, it seems to work pretty good.
Attachments
Saturn1.9-GMDIS.msq
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'70 Chevelle zz383/700r4/3.55 MS2-Extra, Holley Stealthram, 12.18 @ 109
'92 Saturn 1.9 DOHC/5sp, MS2-Extra
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ChevelleFan
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Re: 1995 Saturn SC2 GM DIS

Postby tryingbe » Wed Oct 11, 2017 6:13 am

Nice, what's your plan with it?
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Re: 1995 Saturn SC2 GM DIS

Postby ChevelleFan » Wed Oct 11, 2017 6:18 am

It's going into a Chumpcar endurance racer since ECU is now a no-points modification.

-Dave
'70 Chevelle zz383/700r4/3.55 MS2-Extra, Holley Stealthram, 12.18 @ 109
'92 Saturn 1.9 DOHC/5sp, MS2-Extra
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Posts: 469
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Location: Cleveland, Ohio

Re: 1995 Saturn SC2 GM DIS

Postby ChevelleFan » Sun Dec 03, 2017 7:55 pm

Successful first start after transplanting my computer and harness from the '95 test bed into the '92 racecar!

https://youtu.be/RW5vgK2l53E

-Dave
'70 Chevelle zz383/700r4/3.55 MS2-Extra, Holley Stealthram, 12.18 @ 109
'92 Saturn 1.9 DOHC/5sp, MS2-Extra
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ChevelleFan
Master MS/Extra'er
 
Posts: 469
Joined: Sun May 02, 2004 5:55 pm
Location: Cleveland, Ohio


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