LS1Edit Post-Read/Write DIC Codes
Safety Car
Joined: Aug 2000
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From: Murphy TX
Cruise-In II Veteran
Re: LS1Edit Post-Read/Write DIC Codes (TooManyIDs)
Here is Ken's standard reply:
1) When we read or write to the PCM, we must stop normal operation, after the read, we must reboot the PCM, so it is reset, and the Ltrims start over.
2) The corvette does have communications problems on reset. There are many processors on the Bus, and when we restart the PCM, they don't always manage to resync. It seems to happen about 20% of the time. Pulling the battery cable for 30 seconds will end up rebooting all the processors, and result in resync.
Ken
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.
1) When we read or write to the PCM, we must stop normal operation, after the read, we must reboot the PCM, so it is reset, and the Ltrims start over.
2) The corvette does have communications problems on reset. There are many processors on the Bus, and when we restart the PCM, they don't always manage to resync. It seems to happen about 20% of the time. Pulling the battery cable for 30 seconds will end up rebooting all the processors, and result in resync.
Ken
Melting Slicks
Joined: Feb 2001
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From: DFW TX
Senior Member
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Re: LS1Edit Post-Read/Write DIC Codes (TooManyIDs)
Seeing a P1518 code after read / write
Thread Starter
Safety Car
Joined: Dec 1999
Posts: 4,202
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From: Plano TX
Re: LS1Edit Post-Read/Write DIC Codes (Godspeed)
...1518 is a loss of communications between the PCM and the TAC.
ToplessTexan basically answered it by saying that not all LS1Edit users have that choice.
Drifting
Joined: Apr 2001
Posts: 1,763
Likes: 24
From: Austin TX
Re: LS1Edit Post-Read/Write DIC Codes (TooManyIDs)
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
Every other time I have programmed I only had to reset 1518 with the dic.
Eric
Safety Car
Joined: Aug 2000
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From: Murphy TX
Cruise-In II Veteran
Re: LS1Edit Post-Read/Write DIC Codes (66ImpalaLT1)
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]
[Modified by ToplessTexan, 10:08 PM 9/15/2002]
Melting Slicks
Joined: May 2001
Posts: 2,596
Likes: 120
From: East Tennessee
Re: LS1Edit Post-Read/Write DIC Codes (TooManyIDs)
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..
Burning Brakes
Joined: Apr 1999
Posts: 1,150
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From: Saratoga CA
Re: LS1Edit Post-Read/Write DIC Codes (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..
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Le Mans Master
Joined: Jun 2001
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From: Admit Nothing, Deny Everything, Make Counter Accusations.
Re: LS1Edit Post-Read/Write DIC Codes (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?
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.
Safety Car
Joined: Aug 2000
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From: Murphy TX
Cruise-In II Veteran
Re: LS1Edit Post-Read/Write DIC Codes (rbartick)
I get this code (along with a radio code) every time when programming. This code should be reset with the DIC.