TooManyIDs

Seeing a P1518 code after read / write. Easily cleared via DIC commands, so why is disconnecting the battery listed as the way to handle it?

ToplessTexan

Here is Ken's standard reply:

If you routinely end up in a state that you can't handle through the DIC, you might look into isolating the rest of the network from the PCM while programming. There's a special tool as well as some home grown solutions out there. Keep in mind that many (most?) LS1-Edit users don't have DICs.

Godspeed

FYI 1518 is a loss of communications between the PCM and the TAC.

TooManyIDs

Yes, looked it up and understand it is due to the PCM reset. My question was really why disconnect the battery, when we can simply use DIC commands to do the same thing.

ToplessTexan basically answered it by saying that not all LS1Edit users have that choice.

66ImpalaLT1

One time during programming my guage cluster got confused and wouldnt respond to any of the buttons, it also wouldnt light up when the headlights were on. I had no other choice but to pull the battery cable. Everything was fine after that.

Every other time I have programmed I only had to reset 1518 with the dic.

Eric

ToplessTexan

I think we're okay as long as you don't loose comm between IPC and PCM. I've only had that happen once, and that was w/ an HPP3.



[Modified by ToplessTexan, 10:08 PM 9/15/2002]

kp

I just clear it through the DIC. I have had my cluster go completely dead 3 times out of maybe 20 programs. Naturally the battery has to be disconnected for that. I have noticed since I program with the doors closed now I havent lost the cluster/radio/dcms etc after programming. Whether that really has anything to do with it I dont know, with the doors open all kind of weird things would happen while programming. I have no proof of this though and I am not going to spend the time to find out for sure :) Still get the P1518 but thats easy enough to get rid of with the DIC..

akw408

I've had the same experience. But instead of pulling the battery, I just use LS1 Edit and read the PCM and it usually does the trick. It's always good to read the PCM after you program it anyway to make sure your changes got made correctly.

rbartick

I get this code (along with a radio code) every time when programming. This code should be reset with the DIC. I don't even think that pulling the BATT voltage will clear this code from history. You only have to pull the battery if your systems get out of sync and you lose gauges or another system.

FWIW, When programming I now clear all displays from the DIC (DIC is dark). Since doing this I have never needed to pull my BATT voltage. You should also close all doors and turn off all accessories.

ToplessTexan

Cars w/o a DIC won't get this code.