Part #'s are different. I wrote them down somewhere. Pins are identical. Plugs in fine, however, I'm wondering if there are any possibility of frying anything. Different things between the years (mostly A/C control unit items) raise my concern. In the same area of the engine ECU, I notice there is no ABS control unit in the 96.

I'm asking all this because I have a OBDII readiness monitor issue where 3 are not resetting. Will changing out the ECU fix this? My independent suggested this the idea being the ECU is "stuck" on these readiness monitors. I did plug in the 94 ECU into the 96, however, it still shows the same readiness monitors not set when I turn the key to "on" but not starting the engine. Are OBDII items (esp readiness monitors) even related to the engine ECU?