D3K2, D4K2 and D5K2 Track-Type Tractors Systems Solenoid Return

Solenoid Return - Test

D3K2, D4K2 and D5K2 Track-Type Tractors Systems [UENR5465]

D3K2, D4K2 and D5K2 Track-Type Tractors Systems Solenoid Valve - Test

D3K2, D4K2 and D5K2 Track-Type Tractors Systems Switch Circuits - Test

HYDRAULIC SYSTEM

VALVE GP-SOLENOID

D3K2, D4K2 and D5K2 Track-Type Tractors Systems Solenoid Valve - Test

D3K2, D4K2 and D5K2 Track-Type Tractors Systems Solenoid Return - Test

The following is a list of codes that are associated with the solenoid return lines of the machine.

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Table 1
Diagnostic Trouble Codes (DTC)
MID	DTC	Description
39	358-3	Implement Pilot Pressure Supply Solenoid : Voltage Above Normal
39	358-5	Implement Pilot Pressure Supply Solenoid : Current Below Normal
39	358-6	Implement Pilot Pressure Supply Solenoid : Current Above Normal
39	3187-3	Auxiliary Valve #1 Port B Solenoid Return: Voltage Above Normal
39	3187-4	Auxiliary Valve #1 Port B Solenoid Return: Voltage Below Normal
39	3188-3	Auxiliary Valve #1 Port A Solenoid Return: Voltage Above Normal
39	3188-4	Auxiliary Valve #1 Port A Solenoid Return: Voltage Below Normal
39	3189-3	Auxiliary Valve #2 Port B Solenoid Return: Voltage Above Normal
39	3189-4	Auxiliary Valve #2 Port B Solenoid Return: Voltage Below Normal
39	3190-3	Auxiliary Valve #2 Port A Solenoid Return: Voltage Above Normal
39	3190-4	Auxiliary Valve #2 Port A Solenoid Return: Voltage Below Normal
39	3191-3	Winch Spool In Solenoid Return: Voltage Above Normal
39	3191-4	Winch Spool In Solenoid Return: Voltage Below Normal
39	3192-3	Winch Spool Out Solenoid Return: Voltage Above Normal
39	3192-4	Winch Spool Out Solenoid Return: Voltage Below Normal
39	3193-3	Winch Free Spool Solenoid Return: Voltage Above Normal
39	3193-4	Winch Free Spool Solenoid Return: Voltage Below Normal
39	3194-3	Winch Drive Away Solenoid Return: Voltage Above Normal
39	3194-4	Winch Drive Away Solenoid Return: Voltage Below Normal

The solenoid is used to shutoff, release, distribute, or mix fluids on the machine. Generally, multiple solenoids are located together on a manifold. The solenoid converts electrical energy into magnetic energy, moving a spool located inside the housing of the valve. A spring is used to hold the spool in position until the solenoid is energized.

The magnetic force that acts on the valve spool is created when a coil inside the solenoid is energized.

Possible Causes for an FMI 3 Diagnostic code are:

The harness is shorted.
The Machine ECM has failed. A failure of the ECM is unlikely.

Possible causes for an FMI 4 Diagnostic code are:

There is an open in the circuit.
The solenoid has failed.
The Machine ECM has failed. A failure of the ECM is unlikely.

Note: Prior to beginning this procedure, inspect the harness connectors that are involved in this circuit. Poor connections can often be the cause of a problem in an electrical circuit. Verify that all connections in the circuit are clean, secure, and in good condition. Check the wiring harness for pinch points or abrasions. Look for and repair areas that indicate wires are exposed. If a problem with a connection is found, correct the problem and verify that the diagnostic code is active before performing a troubleshooting procedure.

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Illustration 1	g03717124
Solenoid return wire circuits

Note: The diagram above is a simplified schematics of ECM connections. The schematic is electrically correct. However, not all of the possible harness connectors are shown. Refer to the latest revision of Electrical Schematic, UENR4092 for the complete schematic.

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Table 2
Troubleshooting Test Steps	Values	Results
1. Identify Active FMI Code Associated With Solenoid Circuit	Code present.	FMI 3 diagnostic code, proceed to Test Step 2. FMI 4 diagnostic code, proceed to Test Step 3.
2. Check The Machine Harness For A Short A. Turn the key start switch and the disconnect switch OFF. B. Disconnect the harness connection at solenoid. C. Disconnect the harness connection at the ECM. D. Measure the resistance of solenoid signal contact to all other ECM connections.	Each reading is greater than 5K Ω.	OK - All resistance readings are greater than 5K Ω . Proceed to Test Step 4. NOT OK - One or more readings are less than 5 Ω. Repair -A short exists between the signal contact and the circuit with the low resistance. Repair or replace the machine harness. Note: A resistance that is greater than 5 Ω but less than 5K Ω would indicate a loose connection or a corroded connection in the circuit. A resistance measurement that is greater than 5K Ω would indicate an open in the circuit. STOP
Begin Process For FMI 4 Troubleshooting HERE
3. Check The Machine Harness For An Open A. Turn the key start switch and the disconnect switch OFF. B. Disconnect the solenoid from the machine harness. C. Disconnect the harness connection at the ECM. D. Connect a jumper wire at the two contacts at the solenoid end of the wiring harness. E. At the ECM side of the machine harness, measure the resistance from the signal to the return contact.	Each reading is less than 5 Ω.	OK - The reading is less than 5 Ω, the harness is correct. Proceed to Test Step 4. NOT OK - The reading is greater than 5K Ω. Circuit open in machine harness. Repair : The open is in the wire for the solenoid signal or the return wire for the solenoid. Repair or replace the machine harness. Note: A resistance that is greater than 5 Ω but less than 5K Ω would indicate a loose connection or a corroded connection in the circuit. A resistance measurement that is greater than 5K Ω would indicate an open in the circuit. STOP
4. Check If The Diagnostic Code Remains A. Turn the key start switch and the disconnect switch ON. B. Clear all diagnostic codes. C. Operate the machine. D. Stop the machine and engage the safety lock lever. E. Check if diagnostic code for the solenoid is active.	Code for solenoid is NO longer present.	OK - The diagnostic code does not exist at this time. The initial diagnostic code may have been caused by poor electrical connection or short at one of the harness connections. Resume machine operation. STOP NOT OK - The diagnostic trouble code has not been corrected. Replace the solenoid. If the diagnostic code has not been corrected after replacing the solenoid and performing the procedure a second time, the ECM may require replacement. Prior to replacing the ECM, always contact the Technical Communication at your dealership for possible consultation with AVSpare. This consultation may greatly reduce repair time. Follow the steps in Troubleshooting, "ECM - Replace" if the ECM needs to be replaced. STOP