Operator Cab and Controls - Section 32 3/10 OM3216 Page 32-44 When the ASR switch is on, the system is active. ASR monitors the individual rear wheel speeds. If it determines one of the rear wheels is slipping during acceleration, the brake is applied to the rear wheel with the higher speed. ASR actuation lamp (2, Figure 32-22) will illuminate when the system detects slip- ping from the rear wheels and actuates the ASR. If a malfunction occurs in the system, an action code is shown on the character display, and the ASR function is canceled. Immediately drive the truck to a safe area and turn the ASR cut switch off.
If the brake pedal or retard lever are actuated during ASR actuation, ASR actuation will be cancelled. The ASR system is actuated only when the accelera- tor pedal is being depressed and travel speed is 0 to 30 km/h (0 to 19 mph). If the pedal is released while the ASR is being actuated, the actuation of the ASR system is canceled. On slick road surfaces or on steep slopes, it may be impossible to drive safely even when the ASR is actuated. If both rear wheels slip at the same speed, ASR will not function. If this occurs, reduce the engine output with the accelerator pedal. If any abnormality occurs in the ASR system, an action code is shown on character display (6).
Depressing the top of the switch turns the ASR sys- tem off. An amber light will illuminate the switch noti- fying the operator that traction control is inactive.