16197429 Documentation Project

[RobertISaar]

the 7429 is the PCM from the 93-95 northstar cars, while it's in my posession, i'm going to try and document as much of the hardware as possible.

these are P66 PCMs with both 68HC11F1s on a single board. two 27C512 PROMs in a single MEMCAL with a modified P4 knock filter.

3 32 pin connectors, of which only 6 pins aren't used in some form in any factory application. these things are LOADED with hardware, a total of 41 ICs, most of which i can't identify yet.

interesting stuff found so far: there are 8 FETs used that drive the injectors, there is another identical FET right by them so i was curious to see what it does. it's output runs through a large 1 ohm, 1% resistor and goes on to power the pressure control solenoid in the 4T80E. marked as a 9395, most likely an IRF9395.

i'll probably have some pics up tomorrow.