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Home >> Buick >> 1986 >> Riviera Base >> Repair and Diagnosis >> Engine Performance >> System >> BCM System, Part II >> ECM Trouble Code Charts - Trouble Shooting >> Code B409, Charging System Problem (TORONADO) >> Note On INTERMITTENTS:

Note On INTERMITTENTS:

If an intermittent Code B409 is being set, manipulate circuit 25. When BCM input BI51 change-of-state indicator displays an "X", the failure has been induced.

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