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| Illustration 1 | g00721720 |
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| Illustration 2 | g00677254 |
Location of the Position Sensors (Implement Control Lever) (1) Control lever. (4) Position sensor (Tilt and Tip lever). (5) Lift lever position sensor. | |
When the implement control lever (1) is moved forward or backward, position sensor (5) is actuated. When control lever (1) is moved in a sideways motion, position sensor (4) is actuated.
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| Illustration 3 | g00334076 |
Position Sensors (Implement Control Lever) | |
The position sensors for the implement control lever are input devices to the ECM. The sensors continuously communicate the position of the implement control lever to the ECM. When the operator moves implement control lever (1), position sensor (4) or (5) tells the ECM that the position of implement control lever (1) has changed. The ECM sends a signal that activates the appropriate solenoid valve on the main control valve. The signal regulates the amount of flow of pilot oil at the pilot control actuators.
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| Illustration 4 | g00022252 |
Pulse Width Modulated Signal | |
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| Illustration 5 | g00021437 |
Typical PWM Sensor Schematic | |
The position sensors are a pulse width modulated sensor (PWM). A pulse width modulated sensor has a duty cycle signal that varies as the condition changes. The sensor continuously generates a PWM signal. The ECM measures the duty cycle of the PWM signal in order to determine the position of the control lever. For information on the duty cycle of the sensor, see the following chart. The frequency of this sensor signal is constant at approximately 5000 Hz. The machine electrical system provides +battery voltage to the lever position sensors for operating power.
| Duty Cycle of the Position Sensors for the Implement Control Lever | ||
| Position Sensor | Control Lever Position | Approximate Duty Cycle |
| Tilt and Tip Lever | Full Left | 85% to 90% |
| Tilt and Tip Lever | Full Right | 10% to 15% |
| Lift Lever | Full Forward | 10% to 15% |
| Lift Lever | Full Rearward | 85% to 90% |