1989 can't use tech 1
Thread Starter
Melting Slicks
Joined: Jun 2001
Posts: 2,266
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1989 can't use tech 1
Cannot communicate, 1. tried two different tech 1's. both work on other vehicles.2. tried another prom unit. 3. tried new computer. 4.injector pulse intermittent, even with new module. what is causing my no communication? Thanks Ron B.
Supporting Vendor
Joined: Oct 2004
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You need the PIN E adaptor ......
Team Owner
Joined: Sep 2003
Posts: 25,398
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I would think you actually check the ALDL pin from the ECM. Replacing the ECM/PROM etc doesn't change the harness to ALDL connection.
The FSM will direct you I'd think. If you have the FSM go to 6A-3A-9 for DIAGNOSTIC CIRCUIT CHECKS.
I do believe that this is correct. If you can't put your hands on one locally I believe I have a spare that I could sell very cheap.
Last edited by WVZR-1; Oct 5, 2017 at 12:38 PM.
Team Owner
Joined: Sep 2003
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