This is all really cool guys, thanks!
I was able to dump the memory on both modules in-car today. What a PITA those connectors are in the cramped space they left us to work in!
Honestly, I'm more concerned with why I was unable to talk to the serial port on the test bench. My intuition is leaning me towards the absence of the LCD module, but that's just a wild-assed-guess. I have an idea of someone who might be able to confirm / deny this but won't bog you down with those details.
I'm fried from a long day so will post more thoughts on the dumps tomorrow, but as I was fearing, the "remanufactured" module has a foreign VIN and the ultra-low mileage of 2675 when booted up. Yay, my car just increased in value by $300.00. :-\ How does one total a C4 before it's first oil change? Perhaps Vince Niel can elaborate. But for now I'll digress.
I suspect I see where the odometer counter is stored in triplicate at the "top" of the eeprom.
Truth be told, I'm not terribly optimistic that clearing / programming these pieces is a realistic goal. I'm not inclined to give up yet, but honestly this module is a mother-bear to get to. Presumably by design. I'm not even 100% sure it's the cause of my battery drain, though I have noticed that before dumping these today my battery had stabilized at 12.49v for the last 10 days with the CCM removed. Normally it's down to 12.0-11.8 after that long. And I've only left the keys in the ignition two or three times in the past couple years. It's a habit I never break unless the battery / engine / transmission is removed and the car is rendered immobilized.
Edit: NomakeWan I saw your comment about the PKE possibly waking the CCM and I've considered this more than once. My neighbors across the street still have a Bill Clinton era 900mhz cordless phone, and I've always been suspicious the half-octave harmonics from it have been annoying the PKE. Whatever the case, I have a sacrificial CCM board, and wish to exploit it to it's full potential.
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