obd 1069 help, please

'97 caravan passed every test [california smog]; but failed with mystery explanation of BCM not communicating with CCD. all the body functions
work (lights, door locks, airbags), and engine light comes on (then goes off) at start up. bottom line is with what seems to be unrelated to smog "incomplete drive cycle" from the state sponsored test machine, i can't get the new tags... smog guy says take it to the dealer (ouch); dealer says it may be a bad connection: any/all tips gratefully considered
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