When Monitored and Set Condition:
WARNING: This page is about a different car, the 2003 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.
When Monitored: Ignition on.
Set Condition: Antilock mode is active. Wheel speed is below 4 MPH (RWAL) and above 4 MPH (ABS). Vehicle is in two wheel drive mode. Wheel speed history ruling out any unusual events during the proceeding 15 seconds (RWAL) and 9 seconds (ABS). Need for more than maximum allowable dump cycles.