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Re: reading codes--need help
Many 1994 and 1995 (and some 1993) have the interim PCM systems which are not truly OBD-II compliant (from a communication protocol perspective), but have most of the functionality of an OBD-II system. The systems usually cannot display trouble codes by simply grounding a data request terminal. A compatible scanner or software and PC must be used to retrieve data from the serial data terminal. Several brands and types of scanners are capable, such as a Vetronics Tech I or Tech II, Matco Determinator, Snap-On MT2500, OTC, and several other brands.
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