ELBOW 0039017 - Caterpillar

Illustration 1 g02720308
Connections of the winch free spool solenoidThis diagnostic code is associated with the winch free spool solenoid. The FMI 04 means that the ECM has determined that either an open in the circuit or a short to ground in the return circuit exists.The possible causes are listed:
The return circuit of the solenoid is shorted to ground.
The energize circuit of the solenoid is open.
The return circuit of the solenoid is open.
The solenoid has failed.
The ECM has failed. This is unlikely.Before performing this procedure, inspect the harness connectors that are involved in the circuit. Poor connections can often be the cause of a problem in an electrical circuit. Verify that all of the circuit connections are clean. Verify that all of the circuit connections are secure. Verify that all of the circuit connections are in good condition. If a problem with a connection is found, correct the problem and verify that this diagnostic code is active before performing this procedure.Note: The following procedure can create numerous related diagnostic codes. When all harnesses are reconnected, the related diagnostic codes will be shown as being not active. Clear all related diagnostic codes after this procedure is completed. Ensure that the diagnostic code CID 3193 FMI 04 is active before performing this procedure.Note: Use a digital multimeter for the measurements in this procedure.Test Step 1. CHECK THE RETURN CIRCUIT OF THE SOLENOID FOR A SHORT TO GROUND.
Turn the disconnect switch and the key start switch to the OFF position.
Disconnect the solenoid from the machine harness.
Disconnect the machine harness at the ECM.
At the ECM connection of the solenoid harness connector, measure the resistance from the signal contact 35 (wire J809-BK) to all contacts that are used in the machine harness connectors for the ECM.Expected Result:Each resistance measurement is greater than 5000 ohms.Results:
YES - Each resistance measurement is greater than 5000 ohms. The machine harness is correct. Proceed to Test Step 2.
NO - Each resistance measurement is NOT greater than 5000 ohms. There is a short in the machine harness between signal contact 35 (wire J809-BK) and the circuit with the low resistance measurement.Repair: Repair the machine harness or replace the machine harness.STOPTest Step 2. CHECK THE HARNESS FOR AN OPEN.
The key start switch and the disconnect switch remain in the OFF position.
The machine harness remains disconnected from the ECM.
Install a jumper wire between pin 1 and 2 of the machine harness connector for the solenoid.
At the machine harness connector, measure the resistance from signal contact 34 (wire F870-BU) to return contact 35 (wire J809-BK). Expected Result:The resistance should be less than 5.0 ohms.Results:
OK - The resistance is less than 5.0 ohms. The machine harness is correct. Proceed to Test Step 3.
NOT OK - The resistance is greater than 5000 ohms. The resistance measurement is not correct. There is an open circuit in the machine harness.Repair: The resistance is greater than 5000 ohms. The resistance measurement is not correct. There is an open circuit in the machine harness. The open is in either signal