ABS light on instrument panel

[RobbyMartin]

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]

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]

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]

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]

There must have been at least a code number.

[Jackpine]

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