Cannot retrieve mil codes light stays on?

1993 TOYOTA COROLLA
237,456 MILES
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cannot retrieve mil codes light stays on i jumped te1 and e1 ign on without starting mil light stays on
Feb 2, 2013 at 8:42 PM
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KASEKENNY
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Just to be sure you are getting the correct pins, here is a guide that will help with this.

https://www.2carpros.com/articles/toyota-trouble-code-definitions-and-code-gathering-method-1990-1995

If you are not getting any codes, then that normally means the ECM has failed and is no longer communicating. The vehicle may still start and run but a check engine light with no codes is showing that the ECM is the issue.

I am attaching the process below on how to replace this as I suspect that is what is going to have to happen. However, if you get some codes, let us know what they are, and we can go from there.

Thanks
Jan 8, 2022 at 2:44 PM
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