OPTION AR-LINKAGE 3843503 - Caterpillar

are in good condition.For troubleshooting the power supply of the Implement ECM, refer to the CID 0041 diagnostic code procedures in the Troubleshooting Section of the manual for the Implement ECM.Repair the faulty power supply circuit before proceeding with this procedure.STOPTest Step 2. CHECK THE SIGNAL AT THE SENSOR
The key start switch and the disconnect switch remain in the OFF position.
The machine harness connector J1 remains connected to the connector of the left joystick.
At the machine harness connector J1 for the left joystick, use a 151-6320 Removal Tool to remove the following from the harness connector:
The signal wire U740-BU and socket at contact J1-7
At the back of the connector of the joystick J1, insert multimeter probes along the sensor signal contact J1-7 and the ground 3 contact at J1-8.
Turn the disconnect switch to the ON position.
Turn the key start switch to the ON position.
Measure the duty cycle of the sensor at the connector contacts of the joystick J1-7 and J1-8.
Move the joystick through the full range of the sensor that is described at the beginning of this procedure.Expected Result:The duty cycle of the number two sensor is correct according to the description at the beginning of this procedure.Results:
OK - The duty cycle of the sensor is correct. The sensor is not the cause of the problem.
Reinstall the signal wire U740-BU and the socket back to the original location at contact J1-7 in the machine harness connector for the joystick. Verify that all the wires from the joystick are in the correct locations. Also, ensure that the wires are secure in the connector before proceeding to the next step.
Proceed to Test Step 3.
NOT OK - The duty cycle of the number two sensor is not correct according to the description at the beginning of this procedure. The sensor has failed.Repair: Perform this test step again in order to verify that the sensor signal is not correct.If the signal of number two sensor is not correct, replace the assembly of the left joystick. After replacing the assembly of the joystick, verify that the operation of the new assembly is correct before operating the machine.STOPTest Step 3. CHECK THE SIGNAL AT BOTH OF THE ELECTRONIC CONTROL MODULES
Turn the disconnect switch to the OFF position.
Turn the key start switch to the OFF position.
The machine harness connectors remain connected to the ECM.
At the machine harness connector J1 for the Transmission/Chassis ECM, insert a multimeter probe along return contact J1-45 (wire X800-OR).
At the machine harness connector J2 for the Transmission/Chassis ECM, insert a multimeter probe along signal contact J2-48 (wire U740-BU).
Turn the disconnect switch to the ON position.
Turn the key start switch to the ON position.
Measure the duty cycle of the sensor at the contacts of the ECM connector J1-45 and J2-48.
Move the joystick through the full range of the sensor that is described at the beginning of this procedure.
The machine harness connectors remain connected to the ECM.
At the machine harness connector J1 for the Implement ECM, insert a multimeter probe along return contact