1399921 ENGINE AR-COMPLETE Caterpillar parts 3406C ENGINE
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Compatible equipment models: 1399921:
TRUCK ENGINE 3406C Caterpillar
Illustration 1 g02040683
Schematic of the "NFC 1 Limit EPRV" SolenoidThis diagnostic code is associated with the "NFC 1 Limit EPRV" Solenoid. The FMI 03 diagnostic code means that the Machine ECM has determined that the voltage is above normal.The possible causes of the diagnostic code are listed below:
The solenoid has failed.
The energizer circuit of the solenoid for the modulating valve is shorted to the +battery circuit.
The Machine ECM has failed. A failure of the ECM is unlikely.Note: The following test procedure may create other diagnostic codes. Ignore these created diagnostic codes and clear these diagnostic codes when the original diagnostic code has been corrected. Ensure that the diagnostic code of CID 3575 FMI 03 is active before performing this procedure.Note: Use the 146-4080 Digital Multimeter for the measurements in this procedure.System Response:When this diagnostic code is active, the Machine ECM will turn off the current to the failed solenoid.Test Step 1. CHECK THE SOLENOID ENERGIZER CIRCUIT FOR A SHORT TO THE +BATTERY CIRCUIT
Turn the key start switch and the disconnect switch to the OFF position.
Disconnect the machine harness connectors from the solenoid and the Machine ECM.
At the machine harness connector for the Machine ECM, measure the resistance from contact J2-53 (wire M737-WH) to all contacts that are used in the machine harness connectors for the Machine ECM.Expected Result:Each resistance measurement is greater than 5000 ohms.Results:
OK - Each resistance measurement is greater than 5000 ohms. The machine harness is correct. Proceed to Test Step 2.
NOT OK - Each resistance measurement is not greater than 5000 ohms. There is a short in the machine harness. The short is between J2-53 (M737-WH) and the circuit that has a low resistance measurement.Repair: Repair the machine harness or replace the machine harness.STOPTest Step 2. CHECK IF THE DIAGNOSTIC CODE IS STILL ACTIVE
Inspect the contacts of the harness connectors. Clean the contacts of the harness connectors.
Reconnect all harness connectors.
Turn the disconnect switch and the key start switch to the ON position.
Operate the machine.
Determine if the CID 3575 FMI 03 diagnostic code is active.Expected Result:The CID 3575 FMI 03 diagnostic code is active.Results:
YES - The CID 3575 FMI 03 diagnostic code is active. The problem has not been corrected. The Machine ECM may have failed.Repair: A failure of the Machine ECM is unlikely. Exit this procedure and perform this procedure again. If the cause of the diagnostic code is not found, replace the ECM. See Testing and Adjusting, "Electronic Control Module (ECM) - Replace".STOP
NO - The CID 3575 FMI 03 diagnostic code is not active. The problem does not exist at this time.Repair: The initial diagnostic code was probably caused by a poor electrical connection or a short at one of the harness connectors. Resume normal machine operation.STOP
Caterpillar SIS machinery equipment:
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