John Deere 522379.14 – Rear Chassis Module (PLC): Park Lock Solenoid High Voltage Solenoid 2 Direct Drive

The control unit detects an electrical issue causing a higher-than-expected voltage (or a short to a positive lead) at the signal input of the Park Lock Solenoid Valve 2 (designated as component Y15/2), which may cause the system to enter a protective mode with limited or no function of the park lock mechanism.

• 6110R
• 6120R
• 6130R
• 6145R
• 6155R
• 6175R
• 6195R
• 6215R

1. 1

   Inspect the wiring harness and connectors leading to the Y15/2 park lock solenoid valve for any signs of damage, corrosion, or shorting to a positive lead

2. 2

   Use a multimeter to measure the voltage at the signal input of the park lock solenoid valve to confirm if there is an abnormally high voltage reading indicating a short or internal solenoid failure

3. 3

   Verify that the solenoid valve circuit is properly grounded, as grounding issues can cause voltage irregularities

4. 4

   Check the system for any other active PLC diagnostic trouble codes to ensure the PLC control unit is correctly processing signals

1. 1

   Safety First

   Park the tractor on level ground and securely block the wheels, as you will be disabling the parking lock mechanism. Disconnect the battery before beginning electrical work.

2. 2

   Access the Solenoid

   Locate the Y15/2 Park Lock Solenoid Valve, which is typically mounted near the transmission or rear axle housing.

3. 3

   Harness Repair

   If your diagnostic checks revealed a short to a positive lead or damaged wiring in the harness, repair or replace the affected wiring and connectors.

4. 4

   Remove the Faulty Solenoid

   Disconnect the electrical connector from the Y15/2 solenoid. Carefully remove the old solenoid valve, noting the hydraulic line routing.

5. 5

   Clean the Area

   Thoroughly clean the mounting area on the transmission/valve block. Any dirt or contamination entering the hydraulic system here can cause premature failure of the new part.

6. 6

   Install the New Solenoid

   Install the replacement Park Lock Solenoid Valve 2. Reconnect the hydraulic lines and the electrical connector.

7. 7

   Reassemble and Test

   Reconnect the battery. Start the tractor and test the parking lock multiple times to ensure you hear the solid click of engagement and that the tractor holds securely.

8. 8

   Clear Codes

   Clear the 522379.14 fault code from the PLC and update the PLC control software if a newer version is available from the dealer.