PNP switch is shot--you can rake it through the gears about a dozen times while your setting still of course--just bought a great scan tool from Harbor Freight as well--was on sell from 160 down to 119.00. This scanner will read ABS --long term and short term fuel trim info as well as 02 sensor responce and show real time measure with a graph. The part will also record the info and you can down load into your computor--and possibly send out over the net for discussion.