well i got my new pcm got it all hooked up today and now its showing a ses light. I have no idea what it could be. i tried disconnecting the batt. (neg. side) and it didn't do anything. do i need to disconnect both or try something else. Please help so i can run this thing and see how it does. thanks

 

You need to have it scanned so you can see what's causing the code... otherwise you're just making wild guesses.

 

i have an lt1 scanmaster that was on the car when i bought it, how do i get it to show the codes on that? i don't really know how it works.

 

anyone help me figure out how to pull the codes on this thing?

 

Push the tiny button on the left side of the ScanMaster face. It will scroll through at least 20 different screens, showing you many of the engine sensor and PCM paramaters. One of them will indicate the DTC's... (funny, I cant even remember the three letters is shows on the left part of the screen for the DTC function - and I've had one for about 8 years) and if there are none, it will indicate "-" on the right side. If there are stored or active codes, it will start scrolling through them, indicating them one at a time in 2-digits. It will continue to scroll through the codes over and over until you switch to another function.

For a list of the codes, go to the very end of my online Scanner writeup:

http://members.aol.com/InjuneerZZ/ScanMast.htm

 

ok well i checked it this morning and its not showing any codes so now im really confused. How could it be showing ses but show no codes at all? Could something with the tune be messed up? i think im going to put the old pcm back in today and see if its still throwing the codes unless anyone has a better idea

 

any help on this im not sure what to do

 

It has always been my understanding that the SES light only comes on if there is a code.

What was it scanned with? Maybe try another scanner?

 

that's what i thought but the scanmaster isn't showing anything. I don't think the autozone around here still reads codes.

 

If it were me I would deffinately have another scanner look her over. Also, I would call the mfg. of your scanner to see what their thoughts are.

 

anyone have any other suggestions, im still waiting for ion to get back to me. i did notice that my exhaust almost has a sweet smell to it or something could this be anything or just my head. i dunno im kinda stumped here

 

maybe you should go back to the factory computer until you hear from him.