ABS light on instrument panel

RobbyMartin · #1 Sat, July 31st, 2010, 12:13 PM

The ABS light on my instrument panel has been on for several months and I finally took it to someone to have it checked. There was no code or reason for it being on but the tech cleared it and the light shut off until I plugged my Gryphon cable back in and the light came back on again. He repeated this 3 times and the light goes out until the Gryphon is plugged back in.

Any ideas?

***Longshot270*** · #2 Sat, July 31st, 2010, 09:16 PM

Are you turning off the truck when he clears it then turning on the key to boot the programmer? Are you cranking it?

What happens if you leave it unplugged, clear the code, drive around a bit and then plug in the programmer?

RobbyMartin · #3 Sat, July 31st, 2010, 10:50 PM

I didn't try to leave it unplugged.

He unplugged the programmer, plugged in his scan tool, deleted the ABS code (which was unidentifiable), started the truck, plugged the programmer back in and as soon as he did, the light came back on.

***Longshot270*** · #4 Sun, August 1st, 2010, 12:30 AM

That is what I figured. The programmer is passive when you are not acutally programming so the trouble you are having is in the truck. Unfortunately, since the code was unidentifiable I'm not sure what your next step will be.

***907DAVE*** · #5 Sun, August 1st, 2010, 12:43 AM

There must have been at least a code number.

***Jackpine*** · #6 Sun, August 1st, 2010, 11:01 AM

How can you have an unidentifiable code? I'd say you have a genuine problem with the ABS and you need to take the truck to someone who knows what he's doing.

And, Longshot's absolutely right. The Gryphon is simply a passive monitor in the scenario you are describing. It cannot "cause" any kind of malfunction. There's no feedback from it to the PCM.

- Jack

RobbyMartin · #7 Sun, August 1st, 2010, 11:47 AM

I took it to a brake mechanic who knows brakes. There was one trouble code but no number or explaination to it. The Gryphon has given me the same issue at times. It'll say there is 3 engine codes found but only 2 are given in the next screen.

I just don't know why the ABS light come on as soon as the OBDII connectors touch. It's not a few seconds later or whatever, it's as soon as they touch. There has to be something to it.

***Jackpine*** · #8 Sun, August 1st, 2010, 03:49 PM

Maybe in your engine swap, I think you also changed the PCM? If that's the case, I'd suspect it was not wired properly. Possibly the "plug in" is making connections that it shouldn't?

Again though, an OBD monitor doesn't "set" a code.

Here's a link to a site where you can enter a code that doesn't seem to be "defined". Maybe it will help: http://www.aboutautomobile.com/DTC

- Jack

RobbyMartin · #9 Sun, August 1st, 2010, 08:19 PM

Let me make a few things more clear.
1.) The ECM is the original, only the engine is different.
2.) The ABS light isn't giving a code, only the light comes on and can be turned off from the scan tool, only to come back on when the connection is made.

***Jackpine*** · #10 Sun, August 1st, 2010, 10:13 PM

Quote:

Originally Posted by RobbyMartin

Let me make a few things more clear.
1.) The ECM is the original, only the engine is different.
2.) The ABS light isn't giving a code, only the light comes on and can be turned off from the scan tool, only to come back on when the connection is made.

OK, I give up! Pull the fuse on the ABS light.

- Jack