Section 10 --- Chassis Information
The Executive 2005
440
ATC System:
The ATC system improves traction on slippery or unstable road surfaces by limiting excessive drive
wheel slip. This is accomplished two ways, limiting engine torque to the drive wheel or engaging a
brake to the spinning drive wheel. During normal operation engine torque is unaffected. The ATC sys-
tem works in conjunction with the ABS Electronic Control Unit. The ECU monitors tone ring
speed of the drive wheel in relation to the other wheels. If a speed differential occurs in the drive
wheel, the ECU enters Automatic Traction Control mode.
During an ATC event, the ECU will automatically react to optimize traction and safety if the
motorhome encounters a slippery road surface. Engine torque is normally reduced to limit drive wheel
slip.
NOTE:
The ATC system is always active.
ATC reacts to drive wheel slip by:
• Reducing engine torque to the drive wheel if road speed is above 25 mph.
• Reducing engine torque and activating drive axle brake controls if road speed is below 25
mph. If the brake control activates, it remains active regardless of road speed.
090372
To Next Page
Loading...
