Re: '89 900T AIC Not Working - Tried Many Things With No Luck - Saab 900 Bulletin Board - Saabnet.com
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Re: '89 900T AIC Not Working - Tried Many Things With No Luck
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Posted by Jeff Rininger [Email] (more from Jeff Rininger) on Wed, 20 Sep 2023 07:31:51 Share Post by Email
In Reply to: Re: '89 900T AIC Not Working - Tried Many Things With No Luck, Bernie [Profile/Gallery] , Tue, 19 Sep 2023 17:55:09
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Since we're geographically separated Bernie, how about emailing the stuff to me? No?

Seriously though, your message did trigger a thought. Since it seems the TPS is the only sensor that tells the ECM that the car is idling, and I have verified with the ECM self-test that the AIC is operational, replaced the ECM, and jumpering the TPS connector pins 1 & 2 has no effect, the only thing left that could be preventing the AIC from operating is the wiring between the TPS and ECM.

"When you have eliminated all which is impossible then whatever remains, however improbable, must be the truth" - R. C. Doyle

I'll next pull the boot off the TPS connector and check the connections, and if they look good, I'll jumper the relevant pins directly at the ECM connector.

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