Anti-Lock Braking Warning Warning Will Robinson.

Feb 16 - 24, 2026

While traveling in our home on wheels, both, an Anti-lock Braking System (ABS) and a Collision Mitigation System (CMS) warning lamps lit up on our dash.

Will Robinson and Robot Model B-9

We called Spartan RV, the fine people who manufactured the chassis, and they referred us to the closest Spartan Authorized Service Center to us at the time - Rush Truck Center in Macon George for repairs.

Our home at Rush Truck Center

We called A.J., the service manager at Rush Truck Center. He told us that they don't schedule appointments, but are a first come first served facility.  We continued on to our campsite for the night which was the Family Campground on Warner Robins Air Force Base which is a separate story.

As an ABS warning is not a critical error however we wanted to get it addressed as soon as possible as our chassis warranty runs out in June.

Will Bear overseeing the work.

The technician found that the J1939 bus (what all the chassis computers communicate on to include Engine Control Unit, transmission, brakes, Tire Pressure Monitoring System, electronic dash board, etc.) had 50 ohms of resistance at one end and 100 ohms at the other. The standard resistance is 60 ohms. Troubleshooting found a cable pinched between two inside body panels under the dashboard and the effected area was spliced out.

Cable to the CMS pinched in the wall panel

The technician took it for a test drive and returned our rig to us as no faults were found. This was on Friday near closing time. On my first drive the ABS warning light illuminated.

Sorry for the glare but in the middle you can see the ABS SYSTEM FAULT text.

 We returned to Rush Truck Center on Monday, and they found a cable near the ABS computer with chafing.  Repairs were effected, and we have been happy travelers ever since.

During this evolution we were displaced from our home while the rig was in the shop for maintenance. We had the opportunity to visit some hotels in the area. Yeah, for free breakfast and a pool.

Parked in the penalty box.

Where Are We Going Next?