the ALDL (SDL) connector, has a TCM flash code jumper up to 1996. after that year only PCM scans can read DTC P07xx errors. (tranny errors) This ALDL is above your knees on the steering column. In 1997 they moved the TCM , to the inside confines of the PCM,(old ECU), ending flash codes for ever. and ever. This is SDL, suzuki data link conn. and the TCM