Battery not charging

GEOFFERY

MEMBER
1998 DODGE DURANGO
V8
4WD
AUTOMATIC

Alternator and battery are good, however the battery is not receiving a charge. A green wire a blue with white tracer off the back of the alternator as well as larger guage running to the battery. Large guage has no breaks. Where do I find the other end of the other two wires to check for continuity. The PCM and Ground? Why is the battery not receiving a charge. Belts and pulleys good.

1 Reply

KASEKENNY

MECHANIC
18,907 POSTS

There are a couple things that we are going to have to check. First, we need to check the voltage at the alternator and see what each wire reads.

So, I understand you are trying to check the wiring at this point, but I would suggest finding out what the voltage is before checking the wiring.

Also, we need to be sure this is the testing that we did in order to rule out the battery and alternator.

https://www.2carpros.com/articles/how-to-check-a-car-alternator

https://www.2carpros.com/articles/car-battery-load-test

Next, we need to check the resistance as I suspect you are trying to do of each wire, and I am attaching the wiring diagram below that will help with this.

Here is a guide that will help do this as well:

https://www.2carpros.com/articles/how-to-use-a-voltmeter

Once we know this info we will know if we have a PCM issue or not so let us know what you find, and we can go from there.

Thanks

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