Chip info?, AC programmer

[Fieldsj@uwwvax.uww.edu (Jerry Fields)]

Trying to trouble shoot my AC programmer. (Compressor won't kick in, but
will if relay is grounded.) Yellow wire (from relay) comes into programmer
on Pin 7. I traced this to component U2. Numbers on this chip are:

        Delco 169E
        16042368
        Japan 8641N

>From this chip, one pin shows continuity to a diode (other side of diode to
board ground) and a jumper back into the chip at pin 10 (?). I can't
determine where the signal goes after that. Does anyone have a schematic
for the programmer board, or specs for this chip? I really don't want to
spend the $145.00 or so for a rebuilt programmer!

Diagram below is as viewed from *bottom* side of board:


          | (In from pin 7 on edge pin connector)
(Ground)  |
    |   * * * * * * * *  1
 (diode) * * * * * * *  U2
    |      |       |
    |______|_______|

Any information would be greatly appreciated!

Jerry Fields