POTENTIOMETER AS 4629164 - Caterpillar

This engine uses high voltage to control the fuel injectors.Disconnect electronic fuel injector enable circuit connector to prevent personal injury.Do not come in contact with the fuel injector terminals while the engine is running.
Ensure that the electrical power is removed from the ECM.
Disconnect the connectors for the suspect injector(s).
Fabricate a jumper wire that is long enough to create a short circuit across the terminals of the injector connector. Crimp connector pins to each end of the jumper wire.
Use the jumper wire to create a short circuit on the harness side of the connector for the suspect injector.
Restore electrical power to the ECM.
Access the diagnostic tests on Cat ET. Initiate the "Injector Solenoid Test". Allow the test to cycle through the cylinders at least two times.
Repeat this test for each suspect injector. Stop the "Injector Solenoid Test" and remove electrical power from the ECM before handling the jumper wire.
Remove electrical power from the ECM.Expected Result:Cat ET displays "Short" for the cylinder with the jumper wire.Results:
OK - Cat ET displays "Short" for the cylinder with the jumper wire. The harness between the ECM and the injector connector does not have an open circuit. Proceed to Test Step 7.
Not OK - Cat ET displays "Open" for the cylinder with the jumper wire. There is a problem in the wiring between the ECM and the injector connector. Proceed to Test Step 6.Test Step 5. Check the Harness Between the ECM and the Connectors for the Injector for a Short Circuit
This engine uses high voltage to control the fuel injectors.Disconnect electronic fuel injector enable circuit connector to prevent personal injury.Do not come in contact with the fuel injector terminals while the engine is running.
Ensure that the electrical power is removed from the ECM.
Disconnect the connectors for the suspect injector(s).
Restore electrical power to the ECM.
Access the diagnostic tests on Cat ET. Initiate the "Injector Solenoid Test". Allow the test to cycle through the cylinders at least two times.
Remove electrical power from the ECM.Expected Result:All of the suspect cylinders indicate "Open" on Cat ET.Results:
OK - All cylinders indicate "Open" on Cat ET. The harness between the ECM and the injector connector does not have a short circuit. Proceed to Test Step 7.
Not OK - One or more cylinders indicate "Short" on Cat ET. Note the cylinders that indicate "Short". Proceed to Test Step 6.Test Step 6. Check the ECM for Proper Operation
This engine uses high voltage to control the fuel injectors.Disconnect electronic fuel injector enable circuit connector to prevent personal injury.Do not come in contact with the fuel injector terminals while the engine is running.
Ensure that the electrical power is removed from the ECM.
Create an open circuit at the ECM and perform the "Injector Solenoid Test".
Disconnect the J2/P2 ECM connectors.
Fabricate a jumper wire that is long enough to create a test circuit from the ECM connector to the engine ground stud. Crimp a connector socket to one end of the jumper wire.
Remove the signal wire for the suspect injector from the appropriate terminal location at