What is your question?
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What is your question?
"Check charging system" error comes on while slowing, braking or coasting. Today, while accelerating, radio and instrument panel turned off twice. Alternator is less than a year old, but tested, and it was at 14.2. Any ideas?

Until the charging system can be tested at the time a failure indication is present... Then it can't BE tested properly! .. A professional scanner can be used to catch it acting up and view alt status//battery voltage at that time... Good luck.
The problem is that I can't test the alternator while driving down the road, and as soon as I park it, the indicator goes away... The new alternator and battery were purchased in December 2014 from NAPA.... Is that what you were asking?