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Old 05-25-2014, 02:14 PM   #1
Sc86gt
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Default 97 SC2 PCM wiring diagram

I am looking for the PCM wiring schematic for a 97 SC2. This appears to be a hard item to find on line.
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Old 05-25-2014, 02:54 PM   #2
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1998 SC2
Default Re: 97 SC2 PCM wiring diagram

It would help if you explained exactly what you are trying to do.
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Old 05-25-2014, 03:00 PM   #3
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Default Re: 97 SC2 PCM wiring diagram

Try searching within these forums. If unsuccessful, pm me an email address.
...
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Old 05-25-2014, 03:33 PM   #4
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Default Re: 97 SC2 PCM wiring diagram

I just need the diagram. Low speed cooling fan does not work.
When I search the forums, an error message comes up-website maintenance
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Old 05-25-2014, 04:00 PM   #5
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Default Re: 97 SC2 PCM wiring diagram

There are 9 pages for the pcm wiring diagrams. Does this help? Correct me if I'm wrong but there's only one speed for the cooling fan.
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Old 05-25-2014, 04:01 PM   #6
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Default Re: 97 SC2 PCM wiring diagram

Radiator fan has 1 speed.

HVAC (interior) fan has 4 speeds, the switch generally fails such that only #4 (high/full) works.
...
The proper way to fix a S-Series automatic is to replace it with a 5spd O:)

Last edited by fetchitfido; 05-25-2014 at 04:07 PM.
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Old 05-25-2014, 10:05 PM   #7
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Default Re: 97 SC2 PCM wiring diagram

I meant the fan only works when the a/c is on.
I would like to see a diagram of the ect to the PCM. Also, is there a diagram of the PCM pins?
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Old 05-25-2014, 10:51 PM   #8
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Default Re: 97 SC2 PCM wiring diagram

Was the coolant sensor ever replaced (old round nosed plastic one) with a flat nosed brass one?
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Old 05-26-2014, 06:56 AM   #9
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Default Re: 97 SC2 PCM wiring diagram

Yes it was replaced by the previous owner. I will double check the resistance.
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Old 05-26-2014, 08:02 AM   #10
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Default Re: 97 SC2 PCM wiring diagram

Quote:
Originally Posted by Sc86gt View Post
Yes it was replaced by the previous owner. I will double check the resistance.
Temp to resistance table:
...
The proper way to fix a S-Series automatic is to replace it with a 5spd O:)
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Old 05-26-2014, 06:32 PM   #11
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Default Re: 97 SC2 PCM wiring diagram

No need to check the ect resistance now. The engine lost oil pressure and locked up. No more Saturn.
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Old 05-26-2014, 07:13 PM   #12
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Default Re: 97 SC2 PCM wiring diagram

So are you just going to get rid of the car? Have you looked into fixing it yourself?
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Old 05-26-2014, 08:10 PM   #13
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Default Re: 97 SC2 PCM wiring diagram

I can fix it myself but don't really want to. My job sucks and consumes every bit of time I have. It was a work car in ok shape.
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Old 07-08-2014, 09:23 PM   #14
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1998 SW2
Default PCM wiring diagram

I need PCM wiring schematics for '96 SL1 [auto, a/c, cruise] & '97 SL1 [auto, a/c] if someone has. Thanks.
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Old 07-08-2014, 09:45 PM   #15
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Default Re: 97 SC2 PCM wiring diagram

'96 SL1? PM an email address (not this site) with car info.
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Old 07-23-2014, 05:17 PM   #16
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Default 97 SC2 PCM wiring diagram

Quote:
Originally Posted by fdryer View Post
'96 SL1? PM an email address (not this site) with car info.
Got the 18 pgs; thanks fdryer!
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