ELBOW 4N9431 - Caterpillar

Illustration 1 g03364056
Schematic of the directional and flow control solenoids
This diagnostic code is associated with the solenoid valve (flow control). The FMI 06 means that the ECM has determined that the current of the solenoid is above normal or grounded circuit.The possible causes of the diagnostic code are listed:
The energize circuit of the solenoid is shorted to ground.
The solenoid has failed.
The ECM may have failed, but 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 3435 FMI 06 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 occurs, the swivel seat will not function.Test Step 1. CHECK THE SOLENOID
Turn the disconnect switch and the key start switch to the ON position. Do not start the engine.
Disconnect the solenoid with the active diagnostic code from the machine harness.
Observe the status of the CID 3435 FMI 06. Expected Result:CID 3435 FMI 06 changes to CID 3435 FMI 05 when the solenoid is disconnected.Results:
Yes - CID 3435 FMI 06 changes to CID 3435 FMI 05 when the solenoid is disconnected. The circuit is correct.Repair: The solenoid has failed. Repeat this test "CHECK THE SOLENOID" in order to verify the solenoid failure. Replace the solenoid.STOP
NO - CID 3435 FMI 06 remains active. Proceed to Test Step 2Test Step 2. CHECK THE ENERGIZE CIRCUIT OF THE SOLENOID FOR A SHORT TO GROUND
Turn the key start switch and the disconnect switch to the OFF position.
The solenoid remains disconnected from the machine harness.
Disconnect the machine harness connectors from the ECM.
At the machine harness connector, measure the resistance from signal contact J1-58 (wire R864-OR(Orange)) to frame ground (wire 202-BK(Black)). At the machine harness connector, measure the resistance from the signal contact J1-58 (wire R864-OR(Orange)) to all contacts that are used in the machine harness connectors for the ECM. Expected Result:Each resistance measurement is greater than 5 ohms.Results:
YES - Each resistance measurement is greater than 5 ohms. The machine harness is correct. Proceed to Test Step 3.
NO - Each resistance measurement is not greater than 5 ohms. There is a short in the machine harness. The short is between J1-58 (wire R864-OR(Orange)) and the circuit with the low resistance measurement.Repair: Repair the machine harness or replace the machine harness.STOPTest Step 3. CHECK IF THE DIAGNOSTIC CODE REMAINS
Inspect the contacts of the harness connectors and clean the harness connectors.
Reconnect all the harness connectors.
Turn the disconnect switch and the key start switch to the ON position.
Operate the machine.
Check the status of the CID 3435 FMI 06. Expected Result:The CID 3435 FMI 06 is active.Results:
YES - The CID 3435 FMI 06 is active. The diagnostic code has not been corrected. The ECM may have failed.Repair: The ECM may have failed, but is unlikely. Exit this procedure and perform this procedure again. If the cause of the diagnostic code is not found,