STARTER-MOTOR 3394459 - Caterpillar

Illustration 1 g00607040
Schematic of the Right Travel Reverse SolenoidThis diagnostic code is associated with the Right Travel Reverse Solenoid. The FMI 03 means that the machine ECM determined that the voltage is above normal.The possible causes of this failure are listed below:
The solenoid energizer circuit is shorted to +battery.
The backup switch (travel right) has failed.
The machine ECM has failed. This is unlikely.When this failure occurs, a warning is displayed on the message center and the machine ECM disables the circuit. Test Step 1. CHECK THE SOLENOID ENERGIZER CIRCUIT FOR A SHORT TO +BATTERY.
Turn the key start switch to the OFF position.
Disconnect the machine harness from the solenoid.
Disconnect the machine harness connectors J1 and J2 from the machine ECM.
At the machine harness connector for the solenoid, measure the voltage between the contacts that are listed here:
Contact 1 (wire K946-OR) and frame ground
Contact 2 (wire K952-BR) and frame ground
Contact 1 (wire K946-OR) and contact 2 (wire K952-BR)
Expected Result:Each voltage measurement is approximately 0.0 0.5 DCV.Results:
OK - Each voltage measurement is approximately 0.0 0.5 DCV. The voltage is correct. Proceed to test step 2.
NOT OK - The voltage measurement is greater than 0.0 0.5 DCV. The voltage is not correct. The machine harness is shorted to + battery. Proceed to test step 3.Test Step 2. CHECK IF THE DIAGNOSTIC CODE REMAINS.
Inspect the contacts of the harness connectors and clean the contacts.
Reconnect all machine harness connectors.
Turn the key start switch to the ON position.
Acknowledge any active events That are displayed on the message center by pressing the "OK" key.
Operate the machine.
Check if the diagnostic code is displayed on the message center. The diagnostic information may also be viewed with the ET. Expected Result:The diagnostic code for the solenoid is NOT present on the message center. Results:
YES - The diagnostic code is NOT present. The diagnostic code does not exist at this time. The initial failure was probably caused by a poor electrical connection or a short at one of the harness connectors that was disconnected and reconnected. Repair: Resume normal machine operation. Stop.
NO - The diagnostic code has NOT been corrected. The machine ECM has failed. Repair: It is unlikely that the ECM has failed. Exit this procedure and perform this diagnostic code procedure again. If the cause of the failure is not found, replace the machine ECM. Stop.Test Step 3. CHECK THE TRAVEL RIGHT BACKUP SWITCH.
Remove wire K946-OR from contact 1 of the travel right backup switch.
At the machine harness connector J2 of the machine control, measure the voltage between contact J2-65 (wire K946-OR) and frame ground. Expected Result:The voltage measures approximately 0.0 0.5 DCV. Results:
OK - The voltage measures approximately 0.0 0.5 DCV. The voltage is correct. The travel right backup switch has failed.Repair: Replace the travel right backup switch. Stop.
NOT OK - The voltage measurement is greater than 0.0 0.5 DCV. The voltage is not correct. The machine harness has failed.Repair: Repair the machine harness or replace the machine harness. Stop.