<Pmed you

 

I've had this code before too. I can't remember what the problem was though. It was something simple and stupid If I think of it I'll let you know.

 

See this photo:


This is a photo of the fuse box under the hood, near the battery. The red squared in area is what is referred to as the ELD, or Electrical Load Detector, for our car. The ELD is essentially a current transformer that monitors the amount of current draw the car is pulling from the battery. This amount varies from time to time depending on what you have turned on (various electrical devices). The ELD will output .1 - 4.8 volts to the ECU. This reference voltage is what tells the ECU to increase or decrease the field strength in the alternator, which in turn bumps up the output of the alternator.

I have recently performed a test on my charging system, because I was / am having problems with my amps cutting out. I have traced it to the system voltage not being high enough - which is causing the battery to be strained. Essentially my battery is shot.

Back to the subject at hand though. The ELD. Since all aftermarket electrical feeds are pretty much tapped off of the positive terminal of the battery, the current path is not flowing through the ELD. What does this do? All of the amplifiers, LCD monitors, and pretty much anything else that isn't fed through the factory wiring of the car draw a lot of current.
Since the ELD isn't detecting any additional current draw from the battery, it is going to keep the alternator's output at minimum (12.3 volts) - just enough to keep the battery charged, plus enough to run the systems of the car.

Esstentially this poses two problems / issues.

1. You are not getting the most bang for your buck when you run your stereo equipment, since the system voltage is not at 14.4, but usually lower unless other accessories of the car are active.

2. This is going to put a lot of strain on the battery and possibly the charging system.

This is not your exact car but is an explanantion of how it works.
On your car do this.
1. Check and clean tranny ground
2. Check fuel injector clips
3. Go to Autozone and have them perform a free load test on battery
4. Replace the underhood fuse box to get rid of relay jumpers
My opinion is because of the jumpers the ELD is calling for the alternator to overcharge the battery thus bringing in the code 20 ELD too high vs ELD too low
Do steps one at a time and reset ECU to get out of this problem cheapest.

Pops < Jokie Tuning FTW>
__________________

 

That's what it was! I didn't hook up the trans ground and it threw that code.

 

leah id say leave it alone lol

 

leave it alone? no thanks.


thanks for all of the info!

 

So, I've changed this thing...and the code is still there. It's not causing a cel so I'm not really worried....but could it have something to do w/ the fact that i have a b series, w/ a b series alternator in a civic? I don't know.

 

no....my number is in my sig if you want me to fix it..