Alternator not charging

Good morning,

Absolutely, you should reconnect the wire that you didn't hook up in the beginning. Nothing against auto parts store people but they are sales people not technicians for the most part. When you say you didn't connect it because of memory. Was it your feeling that your battery problem was caused by the battery draining from the radio memory? With a good battery and a good charging system. Things like the radios memory wont drain the battery. Never leave a wire not connected, always find the discharging issue. There are several things that can happen to drain a battery the memory isn't one of them. Reconnect it and let us know what happens.
Tom

Does the alternator charge the battery, did we solve that problem? Also do the lights come on all the time or just sometimes?

Hi Sylvia,

Okay, all those light are wheel related. With a ECU traction control I'm leaning towards the vehicle speed control sensor. That sensor is going to send signal to both the ECU which I believe runs the Speedometer and the ABS module that is triggering the brake lights, I will get the info relating to this failure at there common link and we can do a little more testing to verify. I think we are getting close though.
I'll do this now,
Tom

Here is a video that you should review on the speed sensors while I get the rest off the circuit:

https://youtu.be/InIlnsjOVFA

Tom. Here is the info to bench test your speed sensor:

This should also Helping getting the correct part on the motor.
Let me know how you do.
Tom

Hi,

No, that isn't the case. If power is totally removed for a period of time, often times the computer will experience a short period of time where it is relearning, but it does it automatically. It doesn't require reprogramming.

Joe

Hi,

These codes indicate different things. There isn't one part you can purchase to repair it. Further testing needs done. For example, the "C" codes you have are all related to a short in the ABS sensors. See pic 1. The first thing I would suggest is to simply check the connector at each of the wheel speed sensors to make sure they are not damaged. However, it is hard to believe they all went at once.

Next is the U2023 which is specific to the powertrain control module (PCM). This code specifically indicates that the correct information from the PCM can not be received.

Interestingly, the code is also tied into the brake (abs) system. So, if we lost the sensors all at once, it seem logical that the problem would be related to the PCM.

The P061B is also related to the PCM. It indicates an internal module in the PCM has miscalculated performance. If you look at pic 2, I attached the diagnostics related to this code.

The P0500 is again related to wheel speed miscalculations by the PCM. Again one of the possible concerns is the PCM.

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What does this all mean? Basically, a lot of testing needs done to determine the cause. It all, in someway, is tied to the PCM. So, and keep in mind that this is an educated guess, if I had the vehicle in front of me, the first thing I would be checking is the connection at the PCM for damage, corrosion, or even a loose plug. From that point, I would check to confirm the ABS sensors are good. Note that the P500 is tied to the front brake ABS sensors only. So that is where I would focus first.

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I wish I had an easy answer for you, but honestly, without testing, everything is a guessing game.

Pic 3 shows the PCM location. Also, here is a link that explains how to test an ABS sensor:

https://www.2carpros.com/articles/abs-wheel-speed-sensor-test

Let me know if you have other questions.

Joe