EXTENSION G. 6B1374 - Caterpillar

Test Step 1. CHECK THE DUTY CYCLE AND THE SIGNAL FREQUENCY AT THE SENSORTurn the key start switch and the disconnect switch to the OFF position.
At the machine harness connector J1 for the left joystick, use a 151-6320 Removal Tool to remove the signal wire (wire U740-BU(Blue)) and the socket at contact J1-7. The machine harness connector J1 remains connected to the connector of the left joystick.
At the back of the connector of the joystick J1, insert 7X-1710 Multimeter Probes along the sensor signal contact J1-7 and the ground contact at J1-4.
Turn the disconnect switch and the key start switch to the ON position.
With the joystick in a stationary position, measure the frequency of the signal from the sensor.
Observe the measurement and wiggle the connector of the joystick. Gently pull on the wires and wiggle the wires.
Measure the duty cycle of the sensor at the connector contacts of the joystick J1-7 and J1-4. Move the joystick through the full range of the sensor that is described at the beginning of this procedure.
Observe the measurement and wiggle the connector of the joystick. Gently pull on the wires and wiggle the wires. Expected Result:The frequency of the "steer sensor 2" signal is 500 100 Hz. The duty cycle of the "steer sensor 2" is correct according to the description at the beginning of this procedure. The frequency and the duty cycle are stable during the manipulation of the harness connector and the wiring.Results:
OK - The signal frequency and the duty cycle of the sensor is correct. The signal frequency and the duty cycle of the sensor did not change when the harness was manipulated. The sensor is not causing the problem. Reconnect the signal wire and the socket in the machine harness