Acura Repair Questions? Ask a Mechanic for Answers ASAP
My name is ***** ***** I would be happy to help. To know what needs to be done regarding the VTM light you need to have the computer scanned. You can go by somewhere like Advance Auto and have them scan it for free. They will give you the code. You can then relay that code to me and I can help you with a fix.
There are so many things that can turn the VTM light on that it would be almost impossible to guess at the code. If you don't notice any driveability problems when driving then it's probably not anything too serious.
This surely sounds like insufficient voltage. Try unplugging the alternator temporarily to see if the issue stops. Let me know what happens
The alternator has inside of it several diodes. One or more of these diodes can fail and allow electrical feedback into the vehicles systems which will cause issues similar to the issues you are experiencing. When a diode fails the alternator will still typically charge so the charging voltage is not the problem. Unplugging the alternator would be a quick way to rule out electrical interference related to the alternator. I've been doing this a while so trust me.
Unplug the alternator before starting the car. It's best to do this while the engine is not hot because you'll be close to the exhaust manifold where it will be quite warm. After unplugging the connector start the car and see if the lights go out. I will include a picture of the alternator so you can see the connector. You'll have to pull back a rubber boot covering the connector.