EMS INSTRUMENT CLUSTER CONTINUED
A separate ECU controls the steering. The front axle steering is controlled mechanically and its position is monitored by the
ECU. The machine has three steer modes: 2WS (2-wheel steer), in which the rear axle is locked and the machine steers by the
front wheels only; 4WS (4-wheel steer), in which the rear axle steers in the opposite direction and at the same rate as the front
axle; and crab steer, in which the rear axle steers in the same direction and rate as the front axle.
The EMS displays information obtained from the steering sensors and displays this to the operator by means of the warning
lights (Figure 38, Items 9, 10, and 11) and the LCD will display the message "SPEED RESTRICT" when a steering mode
other than 2WS is selected.
At startup, the ECU will indicate to the operator that a mode change to 2WS will occur, provided
the last mode was a 4WS mode. If a 4WS mode is required, it must be positively selected.
4WS (4-Wheel Steer)
2WS (2-Wheel Steer)
Figure 38. Steering Modes