BOLT 4755820 - Caterpillar

Illustration 1 g00956383
Illustration 2 g00931873
This diagnostic code is associated with the Position Sensor (Steering Wheel) for the operator panel (right station). The FMI 04 means that the ECM has determined that the voltage of the circuit for the position sensor is below normal. The output frequency of the position sensor is approximately 500 Hz. The duty cycle of the signal changes as the position sensor moves. The duty cycle varies from 5 to 95 percent.A - Approximate position of 10 percent duty cycleB - Approximate position of 50 percent duty cycleC - Approximate position of 90 percent duty cycleThe possible causes of this diagnostic code are listed below:
The signal circuit for the sensor is shorted to ground.
The sensor has failed.
The ECM has failed. ECM failure is unlikely. Note: The following test procedure may create other diagnostic codes. Ignore these created diagnostic codes and clear the diagnostic codes when the original diagnostic code has been corrected. Ensure that the diagnostic code of