COVER AS 1719893 - Caterpillar

Coupler Solenoid. The FMI 05 means that the ECM has detected that the current for the solenoid circuit is below normal.Conditions that could cause this diagnostic code to be activated are:
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. Note: 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 connections in the circuit are clean, that all connections are secure and that all 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 test procedure may create other diagnostic codes. Ignore these created diagnostic codes. Clear any created diagnostic codes after the original diagnostic code has been corrected. System Response:A Level 1 warning will be generated.Note: The resistance of the solenoid coil should be approximately 7 ohms at 20 °C (68.0 °F).Test Step 1. CHECK THE SOLENOID
Disconnect the solenoid from the machine harness.
At the machine harness connector for the solenoid, place a jumper wire from contact 1 (wire K785-GN) to contact 2 (wire J965-YL).
Turn the disconnect switch and the key start switch to the ON position. Do not start the engine.
Observe the status of the CID 1530 FMI 05 diagnostic code.Expected Result:The CID 1530 FMI 05 diagnostic code is no longer active. A CID 1530 FMI 06 diagnostic code becomes active when the jumper wire is connected.Results:
YES - The CID 1530 FMI 05 diagnostic code is no longer active. A CID 1530 FMI 06 diagnostic code becomes active when the jumper wire is connected. The solenoid has failed.Repair: Repeat this Test Step "CHECK THE SOLENOID" in order to verify the solenoid failure.Temporarily connect a new solenoid to the harness. Do not install the solenoid. Verify that the replacement solenoid has cleared the diagnostic code. If the code is no longer active, permanently install the new solenoid. Verify that there are no active diagnostic codes for the solenoid. Clear any logged diagnostic codes.STOP
NO - The CID 1530 FMI 05 diagnostic code remains active. The jumper wire does not affect the status of the active diagnostic code. The solenoid is not causing the problem. Proceed to Test Step 2.Test Step 2. CHECK THE CIRCUIT FOR AN OPENThe jumper wire that was installed in the previous Test Step remains in place.
Turn the disconnect switch and the key start switch to the OFF position.
Disconnect the machine harness ECM connector J2 from the ECM.
At the machine harness connector J2 for the ECM, measure the resistance from contact J2-6 (wire K785-GN) to contact J2-8 (wire J965-YL).
While observing the multimeter resistance measurement, wiggle the machine harness connectors for the ECM and wiggle the machine harness connector for the solenoid. Gently pull on the wires. Move the wires around.Expected Result:The resistance measurement is less than 5.0 ohms at