2009 Honda Pilot, 203K.
Battery light is on.
There is an audible whining noise from the alternator.
There is also a noticeable burnt smell from under the engine bay.
Two different battery testers both say the ripple is ok; one tester said it was 364mV.
Charging voltage is 14.0v
Battery is new and tested perfect.
Tried grabbing a waveform using my scope (be easy on me, I am learning how to use it):
Some folks have advised me that a good waveform should look like the McDonalds Golden Arches, but I have yet to see a known-good one for comparison.
Any idea why the alternator light is on? It stays on under all conditions.
I recognize that the car needs a new alternator due to the noise, but I wonder what is triggering the alternator light since the charging system voltage is acceptable.
Battery light is on.
There is an audible whining noise from the alternator.
There is also a noticeable burnt smell from under the engine bay.
Two different battery testers both say the ripple is ok; one tester said it was 364mV.
Charging voltage is 14.0v
Battery is new and tested perfect.
Tried grabbing a waveform using my scope (be easy on me, I am learning how to use it):
Some folks have advised me that a good waveform should look like the McDonalds Golden Arches, but I have yet to see a known-good one for comparison.
Any idea why the alternator light is on? It stays on under all conditions.
I recognize that the car needs a new alternator due to the noise, but I wonder what is triggering the alternator light since the charging system voltage is acceptable.