leeroberts0047

hi had a warning light on the dash altrenator/battery tested the alternator giving out over 14 volts put a new battery in and the warning keeps coming up, any ideas??

jerryt

Voltage regulator ??

leeroberts0047

How would I test that?? Just take it out and check the brushes?

jerryt

Voltage check for regulator and ripple check for alternator diodes. You could research what the conditions are that turn the light on???

MarcusF

There are no brushes on the regulator. Being an inexpensive normal wear part, you may want to consider replacing it and seeing if that corrects the issue.

big_mike1979

Funny, it happened to me on Monday morning then it never came back again.
I checked my battery and alternator and they are charging the way its supposed too...Go figure.

leeroberts0047

new alternator and battery and the problem is still the same any ideas??

jonUF02

I believe the voltage regulator comes with the alternator replacement, it's part of or attached to the alternator.

bobbyjo9

Alternator output was tested on the car or on the bench? Alternator could be fine but if you have a problem with the trigger circuit, output would be impacted. Have checked and cleaned your cables and connections?

jerryt

Alternator can be controled by BCM (Battery/Body control module), SAM (Front or Rear) and or ECU.

On my 2012 it is a LIN controled alternator which is controled by both the rear SAM and the ECU.

Post your vehicle information (Model, year, and VIN) and I will check what makes up the system on that vehicle...

leeroberts0047

problem solved just a 200amp fuse blown, lol money well spent on a new alternator and battery lol live and learn i suppose, just the blower motor problem to fix now

leeroberts0047

any one know where the relay is for the climate control? checked the wiring diagram the climate control power goes through it but cant seem to find where it is on the car, any help??