What are the symptoms of voltage regulator failure? One of the most common symptoms of voltage regulators failing is overheating. With a low battery and no current going into the vehicle, overheating can occur. What you do first is to disconnect the vehicle from the wall. Then you simply place your multimeter clamped directly onto the battery terminals and then read the current going into your vehicle.
Black to negative and positive to black. And when you say it out loud, you heard the same voltage, which is still low. And then you say it into the meter, again, reading black to black.
Common voltage regulator failure causes include poor connections, or damaged wiring. If you suspect the regulator is to blame, there are a couple things you can do to remedy the problem. First, try and reconnect the connection. If this doesn't fix the problem, try and replace the whole connection. You may need to replace the entire regulation circuitry in order to solve the problem.
Another symptom of voltage regulators failing is a current blackout. If this happens, the power has been cut to the voltage regulator's circuit breaker.
Circuit Breakers in many cars contains a fuse that will shut the power off to your regulator if the breaker gets damaged. If this happens, then the power is shut off to your vehicle's power system, which allows the car to charge its battery at a bit faster.
To fix voltage regulators, check the circuit breaker, then repair any damaged wires or connectors, then run a small amount of electricity through the regulator. if all of the above doesn't fix the problem, then replace the regulator and re-connect the batteries.