VEHICLE DESCRIPTION: CERTAIN TRACTORS FAIL TO COMPLY WITH FMVSS NO. 121, "AIR BRAKE SYSTEMS." THE AIR LINES MAY NOT BE ROUTED PROPERLY TO THE DRIVE AXLE SERVICE BRAKE RELAY.
THESE VEHICLES ARE NOT IN COMPLIANCE WITH THE STANDARD.
DEALERS WILL INSPECT FOR CORRECT AIR LINE ROUTING AND REROUTE IF NECESSARY.