====== 2G Socket Checkpoints ======

With a 2G ECU, when removing the EPROM it's entirely possible to damage a track on the top of the board and still allow the engine to run, but cause a number of malfunctions.

If the engine runs, it indicates that the connections between the processor (IC1) and the EPROM are okay.

====== Details ======

Check for continuity of the tracks to the EPROM as follows (note that there is a 100 ohm series resistor between EPROM pin 22 and IC2 pin 44):

^ EPROM ^ IC2 ^ IC1 ^Notes ^
|     01|   25|   63| |
|     02|   28|   60| |
|     03|   34|   55| |
|     04|   35|   54| |
|     05|   36|   53| |
|     06|   37|   52| |
|     07|   38|   51| |
|     08|   39|   50| |
|     09|   40|   49| |
|     10|   41|   48| |
|     11|   45|   11| |
|     12|   46|   12| |
|     13|   47|   13| |
|     14|     |     |GND|
|     15|   48|   14| |
|     16|   49|   15| |
|     17|   50|   16| |
|     18|   51|   17| |
|     19|   52|   18| |
|     20|     |     |GND|
|     21|   30|   58| |
|     22|   44|     |100 ohms|
|     23|   29|   59| |
|     24|   31|   57| |
|     25|   32|   56| |
|     26|   27|   61| |
|     27|   26|   62| |
|     28|     |     |+5V|

Pin numbers for IC1 and IC2 are printed on the PC board. The EPROM pins are numbered as follows:

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