I want to know if there is a way to test my [alternator](...


I want to know if there is a way to test my [alternator](/topics-alternator-toyota/) for a bad diode as my battery drains when its off Mechanic's Assistant: Did you test the battery with a voltmeter? And have you ever chan...

I want to know if there is a way to test my [alternator](/topics-alternator-toyota/) for a bad diode as my battery drains when its off Mechanic's Assistant: Did you test the battery with a voltmeter? And have you ever changed one before? I've changed alternator. I have a used alternator from my other [Camry](/topics-camry/) that was working. Rather not change it if I don't have to. If that's not the drain Mechanic's Assistant: What year is your Camry? 96 Mechanic's Assistant: Are you fixing your Camry yourself? What have you tried so far? Myself. It was shorting at the terminal. I unplugged the alternator because I was told it could be the problem, and it didn't drain again for a day o rye so. Seems random sometimes. Is there a way to test it.? I have a meter

Automotive Expert
\*\*\*IMPORTANT PLEASE READ\*\*\* THE PHONE CALL REQUEST IS AUTOMATED FROM THE WEBSITE. NOT FROM ME. PLEASE DON'T LET IT ANNOY YOU. YOU HAVE THE OPTION TO IGNORE IT OR ACCEPT IT. Please make sure you've listed the Year, Make, Model, Drivetrain and [Engine](/topics-engine-toyota/) information for your vehicle if you haven't already. Thank You for contacting JustAnswer! Hello I'm Bart. I am an ASE certified Master Technician with over 20 years experience in the Automotive Industry. I'm usually logged in 9-5 Mon-Fri Mountain Time Zone. I take lunch from 12-1p I know it can be frustrating having vehicle problems. I'll do my best to help you. Please understand that I don't know what your skill level is, what tools you have available and I can not physically see what you are doing. If it is more helpful the site automatically offers a premium phone call service where you can talk to me directly or another Expert may call you if you request it. You may accept or decline, but please understand that I may not be able to call right away as I may be helping another customer or researching information related to the problem you are having. If this is an electrical issue please a have voltmeter and 12 volt test lamp ready to use. I would also ask that you tell me what parts you have tried replacing to fix the problem. Doing so will help diagnose the issue faster. If there are any trouble codes please provide them. I'm reading the information you provided to the Mechanic's Assistant. I may request more information or provide an answer momentarily. Just a moment.
Automotive Expert
You would need to perform a parasitic drain test on the vehicle. Here's how do it.
Automotive Expert
https://www.youtube.com/watch?v=8c43Ix6Lf2c

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