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- From: R1004@vmcms.csuohio.edu
- Newsgroups: rec.autos.tech
- Subject: Re: GM diagnostic harness
- Message-ID: <1687AD2F7.R1004@vmcms.csuohio.edu>
- Date: 8 Oct 92 20:00:02 GMT
- References: <1992Sep24.134143.23375@ll.mit.edu> <Bvrppv.GGC@medar.com> <1992Oct8.152853.1690@newsgate.sps.mot.com> <1992Oct8.174745.23885@hubcap.clemson.edu>
- Sender: news@news.csuohio.edu (USENET News System)
- Organization: CSU
- Lines: 36
-
- In article <1992Oct8.174745.23885@hubcap.clemson.edu>
- michaet@hubcap.clemson.edu (michael dale townsend) writes:
-
- >
- >mark@wdcwdc.sps.mot.com (Mark Shaw) writes:
- >>. . . . . You can do the same thing with a piece of wire and
- >>the factory (Helm) shop manual. On my GM cars I just short the
- >>two appropriate pins together and the "CHECK ENGINE" light flashes
- >>the error code number.
- >
- >>Mark
- >
- >Do the shop manuals tell which pins are the "appropriate" pins?
- >Also, my 1977 Pontiac Grand Safari has a couple of suspicious looking
- >wire harnesses under the hood. (One is near the air-conditioner btw.)
- >I didn't know that they had the diagnostic computers in cars back then.
- >Does anyone have any info or ways to get info on this? I'd like to
- >capitalize on this if possible.
- >Michael Townsend michaet@hubcap.clemson.edu
- >
-
-
- Yes, the manual will tell you which terminals to use. The connectors
- on a late '70s vintage car are for diagnostic purposes but there is
- no onboard computer involved - they are just taps into the car's
- electrical system. Good chance the connectors on that Safari
- are orange. Of course a factory shop manual will tell you how
- to use them when trouble shooting - mine did!
-
-
- ------------------------------------------------------------------------
- Bob Martel |
- bob2@cua3.csuohio.edu | Lady luck must have been a wonderful girl
- R1004@vmcms.csuohio.edu | -She's never been a friend of mine!
- | Alan Parsons Project
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