Scott,
answers to your questions:

1.) How did you determine the version of your ICM firmware?

ANS: On the ICM body (near the "load portion" of the unit) is a set of numbers representing the sw (firmware) version, like 7.95 for example.

2.) How did you specify the new part/firmware revision?
{For example, did you request that the salvage yard send you an "ICM, firmware version 7.95 ?"}

ANS: No, the part number is clearly marked on the unit. For my car it is: 015 545 61 32. This is a newer replacement for the original part (can't remember that number). But it was the same as the "bad" ICM unit except for the newer sw update on the load module.

3.) Is the ICM similar to the LH-unit, in that it may be
taken apart (opened up) - revealing a socketed (insert-mount) EPROM? If so, I can clone a good chip, easliy, with my device programmer (on my PC).

ANS: No, the ICM cannot be taken apart. Actually, in older versions, you could remove the load module portion and replace it separately. But not in newer versions! The ICM is located on the left fender wall probably on the side or top of the left wheel well. Mine is in the latter position mounted with three (3) nuts and heat sink compound. Very, very simple to remove and replace. Very expensive ($1113) for a new unit!
Mine has four (4) push on connections and one (1) vacuum line connection (to the so called 'load module'). Yours probably does too. My web page shows my ICM under the "DI" menu (#4) with a schematic. It should be very similar if not identical to yours.

Hope this helps.

__________________
Regards . . . . JimF
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'94 S500 Cpe

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