I've been getting this Service Trailer Brake System on my dash. Ive seen a lot of Youtube showing it can be a trailer brake relay, a trailer brake module and the trailer brake actuator ( switch at dash) circuit board. All three of these components are an easy fix and fairly inexpensive, but how does one test/ know which one is the culprit. Should I take it to a shop to have it "scanned"? Would like to figure this out , if anybody has experience with this trailer brake electrical problem I would greatly appreciate any ideas. Jeff
I've been getting this Service Trailer Brake System on my dash. Ive seen a lot of Youtube showing it can be a trailer brake relay, a trailer brake module and the trailer brake actuator ( switch at dash) circuit board. All three of these components are an easy fix and fairly inexpensive, but how does one test/ know which one is the culprit. Should I take it to a shop to have it "scanned"? Would like to figure this out , if anybody has experience with this trailer brake electrical problem I would greatly appreciate any ideas. Jeff