I have these lights always on trying to figure out exactly what is causing it. The traction control and ABS light are always on the E brake light comes on about 3 seconds after I start the truck and stays on. No related DTC's that I can see. I have checked all fuses. I checked and cleaned the ground coming of the ABS control module and of course the brake fluid level. Any suggestions for diagnosing this.

 

HPT can't read the ABS module, so using a scan tool that can would help you.

 

Thanks. I did not know HPT had limitations.

 

Stopped by a shop and had the codes read and there is no communication with abs. I already checked all the fuses but will do it again to make certain. Any ideas what wires are for communication and where they go from the abs module? To the ECM maybe?

 

It's the stupid mistakes that hurt the most. I didn't have the connector fully locked.