2
Stability and Safety Enhancement Systems
12
WABCO
Maintenance Manual MM-0112 (Revised 07-18)
Drag Torque Control
The ABS ECU has the ability to send a message to the engine to
increase engine RPM to prevent drive axle lock-up, if the vehicle is
on a downhill grade and in the incorrect gear.
Lift Axle Capability
Certain six sensor ABS ECUs with ATC allow third axle sensors to be
installed on a lift axle. These ECUs will not log a fault for the axle
being in the raised position while the vehicle is moving.