I just ran with it and the problem cleared itself within 100 miles. Of course when I pulled back up to the shop the whole crew had shut the shop bay doors and ran for their cars to go home leaving me with the bag. He asked me to drive around the terminal and loop back to see if the light might go off and come back to the shop if it didn't go off. Trailer ABS Service Components Catalog L20243 for sensor extensions, if needed.
The tech was perplexed, scooting around with his little creeper checking every electrical connection with his little tester thingamajig while another tech told him to cut the wires so they could go home (it was midnight). I hooked my pigtail back up and the light was still on. They replaced the ground wiring for the ABS, put brand new brake drums and linings on. I had a trailer once with this problem and took it into the terminal to have them work on it. Installed on semitrailers, the module acts as a relay valve during normal braking, but during ABS events it will intervene to help maintain vehicle stability and minimize stopping distance by preventing wheel lockup.
I would say 1 out of every 25 trailers I pick up has this problem at my company. Antilock Brake System (ABS) and Bendix ® Trailer Roll Stability Program (TRSP®). It is my contention at my company that the problem is that some of the lease operators are using the trolley brake going down hills and overheating and/or damaging the trailer brakes, at least building up excessive dust and heat to the sensors which causes the majority of these problems.
#Trouble shoot bendix abs on trailer driver
This type usually when you plug the trailer in or turn the key on the ABS light will come on and go out to show it is ok. The M-30T Bendix ® trailer ABS modulator-valve is controlled by the EC-30T controller to modify driver applied air pressure to the service brakes duringABS activation. 3 to the Blue Gladhand to the Pup Trailer. Any trailer manufactured after 2000 has to have the ABS constantly powered by the center or blue trailer cord circuit, (if the truck is new enough to have this too). 3.) Attach Blue (Out) Gladhand Fixture No. 2 to the Blue Gladhand from the Lead Trailer. 2.) Attach Blue (In) Gladhand Fixture No. 1 to the Red Gladhand from the Lead Trailer.
Oftentimes just bouncing down the road a couple hundred miles clears the problem up too because the brake sensor might have been simply fouled with brake dust and it shakes out after a while thereby making the light function properly. Troubleshooting Guide Gladhand Attachment Points: 1.) Attach Red (In) Gladhand Fixture No. Some of my tricks include spraying WD40 in the pigtail and socket and using a bungee to hold the pigtail tightly into the socket, most of the time that helps. I've heard of guys just unplugging the light and plugging it back in when they get to the final.