John Deere 524179.19 – PTA / TCU: Missing Info On The CAN BUS, Transmission Module IVT (PTA) / Incorrect CAN BUS Message, Status of Park Lock Solenoid Valve 2 from PLC

The transmission control software is unable to determine the status of the Park Lock Solenoid Valve 2 (Y15/2). The PLC cannot determine the valve's status (often due to an electrical fault) and cannot provide the relevant data to the transmission module, triggering this communication error.

• 6110R
• 6120R
• 6130R
• 6145R
• 6155R
• 6175R
• 6195R
• 6215R
• 6230
• 6330
• 6430
• 7130
• 7230
• 7330
• 7430
• 7530

1. 1

   Check for active priority diagnostic trouble codes in the PLC control software (such as PLC 328020.31 or PLC 328021.31) related to the Y15/2 Park Lock Solenoid Valve 2

2. 2

   Inspect the CAN BUS communication lines between the PLC and PTA/TCU control units for damage

3. 3

   Examine all wiring and connectors associated with the Y15/2 park lock solenoid valve for signs of damage, loose connections, corrosion, open circuits, or shorts to ground

4. 4

   Use a multimeter to verify the operation and current draw of the Y15/2 park lock solenoid valve

1. 1

   Address Priority Codes

   Process and resolve any diagnostic trouble codes generated directly by the PLC first, as they take priority and are usually the root cause of the 524179.19 CAN BUS code.

2. 2

   Repair Wiring

   Repair or replace any damaged wiring or connectors in the CAN BUS network between the PLC and the transmission module.

3. 3

   Fix Solenoid Circuitry

   If an open circuit or short is found in the Y15/2 solenoid circuit, repair the affected harness leads. Ensure all connections are secure and free from contamination.

4. 4

   Replace the Solenoid Valve

   If the Y15/2 park lock solenoid valve fails electrical testing (e.g., incorrect current draw or internal short), replace the valve.

5. 5

   Update Software

   Verify that both the PLC and PTA/TCU control software are up to date. Update the software if necessary.

6. 6

   Clear and Test

   Clear all diagnostic trouble codes and test the park lock engagement and disengagement to confirm the repair.