STRIP AS 1386814 - Caterpillar

The shift lever has three connectors.
8 Pin Connector
6 Pin Connector
4 Pin Connector
At the shifter, disconnect the 8-pin harness connector "C-C52". The six pin harness connector remains connected to the shifter 6 pin connector. The shifter 4 pin connector remains jumpered between pins 3 and 4.
Refer to the schematic of the shifter. Connect two jumper wires from the ECM connectors to frame ground, in order to simulate each position of the shifter. Use the 7X-1710 Multimeter Probe in order to make the connections. If a particular position is already suspect, begin with the wires for that position.
Monitor the status of the shifter on the ET screen. Expected Result:As each combination of contacts is grounded, the ET screen displays the corresponding shifter position.Results:
OK - As each combination of contacts is grounded, the ET screen displays the corresponding shifter position. The ECM and harness appear to be working correctly.Repair: Replace the shifter.STOP
NOT OK - One of the combination of contacts is incorrect. The wiring harness or the ECM is not working correctly. Proceed to Test Step 4.Test Step 4. CHECK THE ECM.
Table 2
Machine ECM Connector Pin Assignments
Function Wire Assignment Machine ECM Pin Assignments
Forward G750-BU Connector J2, Pin 49
Neutral G763-PU Connector J2, Pin 23
Reverse G755-GY Connector J2, Pin 28
First Gear G768-GN Connector J2, Pin 50
Second Gear G760-WH Connector J1, Pin 41
Third Gear G761-YL Connector J1, Pin 42
Fourth Gear G762-BR Connector J1, Pin 43
Open the machine service disconnect switch.
Based on the information in table 2 remove the corresponding wires from the machine ECM harness connectors "C-C12" and "C-C13". Use the shifter schematic for reference. Remove all of the wires shown in table 2, and place DT sockets into the connectors. Wire the sockets in a way that allows for individual connection to frame ground. Be sure that the wires cannot accidentally touch frame ground.
Close the machine service disconnect switch. Power up the machine with the key in the run position, and connect and start up the ET service tool.
Select the power train ECM and go to status screen 4.
Monitor the status of the shifter on the ET screen. Expected Result:As each combination of contacts is grounded, the ET screen displays the corresponding shifter position.Results:
OK - As each combination of contacts is grounded, the ET screen displays the corresponding shifter position. The ECM is working properly. The wiring harness may have failed.Repair: Repair the wiring harness or replace the wiring harness.STOP
NOT OK - One of the combinations of contacts does not cause the proper status to be displayed. The ECM may have failed.Repair: Clean the contacts for the ECM harness connectors. Is unlikely that the ECM has failed. Exit this procedure and perform this entire procedure again. If the problem remains, replace the ECM. Is preferable to show that the new ECM corrects the problem and that the suspect ECM demonstrates the problem.STOPTest Step 5. VERIFY SHIFT LEVER REMOTE FNR SWITCH FUNCTIONALITY.
Place shift lever on the steering column in Neutral and First Gear.
At the shifter 4 pin connector, remove the jumper wire between