In the diagrams down below I have included the factory diagnostic troubleshooting guide for excessive brake travel for your vehicle. It might appear to all over the map, but it is in order, and when it goes from one thing to another, you are meant to skip to that sub inspection. Please go through the guide, in order, and get back to us with what you are able to find out.
Images (Click to enlarge)
Sunday, August 18th, 2019 AT 11:16 PM