John Deere 522379.15 – Rear Chassis Module (PLC): Park Lock Solenoid High Amp Draw Solenoid 2 Direct Drive

This code indicates that the controller is detecting a higher-than-expected current draw (high amps) on the circuit for Park Lock Solenoid 2. This condition is typically caused by a short to ground in the transmission wiring harness or an internal short circuit within the solenoid coil itself, which causes it to pull excessive amperage.

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

1. 1

   Inspect the transmission wiring harness and the connector at the Y15/2 Park Lock Solenoid Valve for any signs of physical damage, loose connections, moisture, or corrosion.

2. 2

   Inspect the circuit for a short to ground or a short to positive between the Rear Chassis Module (PLC) and the Park Lock Solenoid.

3. 3

   Measure the resistance and current flow of the Park Lock Solenoid coil using a multimeter. A resistance reading that is lower than the OEM specification indicates an internal short in the coil.

4. 4

   Verify the 5-volt power supply and ground circuits for the Park Lock system to ensure proper voltage is reaching the sensors and valves.

1. 1

   Safety First

   Ensure the tractor is parked on level ground, the engine is off, the key is removed, and the machine is securely supported before working on the transmission.

2. 2

   Harness Repair

   If the diagnostic tests reveal a wiring issue (chafed wires or melted insulation causing a short), repair or replace the damaged section of the transmission wiring harness.

3. 3

   Solenoid Replacement

   If the solenoid coil is internally shorted: Locate the Park Lock Solenoid (Solenoid 2) on the transmission control valve block. Disconnect the electrical plug from the defective solenoid. Remove the retaining nut/mechanism and extract the solenoid coil and cartridge from the valve block. Discard the old O-rings. Install the new Park Lock Solenoid with new O-rings, secure the retaining nut, and reconnect the wiring harness.

4. 4

   Clear Codes

   Clear the fault codes using a diagnostic tool or the tractor's onboard display, then test the park lock function (engagement and disengagement) to ensure the issue is resolved.