Quote Originally Posted by Archerfish View Post
Will this kind of test do good for newer cars? From what I understand, you disable the fuel pump by removing the fuse. Is that right? For cars equipped with PCM and with almost all controls relying to computer, will it not give you code error once you disabled your fuel pump?

From what I've read, you can do your own battery voltmeter by connecting two series resistors and parallel it to one resistor. That series parallel resistors should serve as your probe as you connect it to your multimeter. I haven't tried it so I can't remember the values of resistors.




I have used this procedure on MY 2018 cars without adverse effects. Or, if you don't feel comfortable with this concept, remove the ECU fuse while load testing the battery. Or, bypass the starting circuit with the ignition switch off and crank the engine while observing the voltage. Whichever applies to your car, that's what you use.