ROLLER & BEARING AS 1969956 - Caterpillar

Illustration 1 g01266427
Machine Control ECM 10 VDC Sensor Power Supply connectionsThis diagnostic code is associated with the Machine Control ECM 10 volt sensor power supply. The 10 volt sensor power supply provides power for the left hand and the right hand thumbwheel position sensors (attachments). The thumbwheel sensors are located in the left hand joystick and the right hand joystick.The CID 1482 FMI 03 diagnostic code is activated when the Machine Control ECM detects that the voltage of the 10 volt power supply circuit is above normal.The following conditions could cause this diagnostic code:
The power supply circuit is shorted to a higher voltage source.
A sensor has failed.
The ECM has failed. This is unlikely.Note: The following test procedure may create other diagnostic codes. Ignore these created diagnostic codes and clear the diagnostic codes when the problem has been corrected. Verify that the CID 1482 FMI 03 is active before performing this procedure.Test Step 1. CHECK THE VOLTAGE AT THE SENSOR
Turn the disconnect switch and the key switch to the ON position.
At the left hand joystick or the right hand joystick, locate the three contact machine harness connector for the thumbwheel position sensor (if equipped). Insert a 7X-1710 Multimeter Probe along the supply wire E472-GN at contact A. Insert a 7X-1710 Multimeter Probe along the return wire J766-PU at contact B(left joystick) or the return wire J767-GY (right joystick).
Measure the voltage between the supply contact A and the return contact B.Expected Result:The voltage measurement is 10.0 0.4 DCV.Results:
OK - The voltage measurement is 10.0 0.4 DCV. The voltage is correct. Proceed to Test Step 4.
NOT OK - The voltage measurement is greater than 10.0 0.4 DCV. The voltage measurement is not correct. Proceed to Test Step 2.Test Step 2. CHECK THE POWER SUPPLY AT THE ECM
Turn the disconnect switch and the key switch to the OFF position.
At the Machine Control ECM connector J1, use a 151-6320 Removal Tool or a similar tool to remove the power supply wire and socket at contact J1-69 (wire E472-GN) and one of the return wires and socket at contact J1-70 (wire J766-PU) from the connector. The machine harness connector J1 remains connected to the ECM.
Turn the disconnect switch and the key switch to the ON position.
Use the multimeter probes in order to make contact on the ECM connector pins. Measure the voltage at the ECM pins between the power supply contact J1-69 and the return contact J1-70.Expected Result:The voltage measurement is 10.0 0.4 DCV.Results:
OK - The voltage measurement is 10.0 0.4 DCV. The voltage is correct. The ECM power supply is correct. Install the wires and sockets that were removed from the J1 connector back into their original locations. Proceed to Test Step 3.
NOT OK - The voltage measurement is greater than 10.0 0.3 DCV. The ECM power supply is not correct.Repair: It is unlikely that the ECM has failed. Verify that all possible causes of the diagnostic code have been investigated. Exit this procedure and perform this procedure