John Deere 524177.19 – PTA (Transmission Module IVT): Missing Info On The CAN BUS, Transmission Module IVT (PTA)

The Transmission Module (PTA/TCU) is unable to determine the diagnostic status of the wheel speed sensor (transmission output speed) from the PLC (Rear Chassis Module) or TIA control software, causing the system to transmit a replacement value and limiting transmission function.

• 6110R
• 6120R
• 6130R
• 6145R
• 6155R
• 6175R
• 6195R
• 6215R
• 6230
• 6330
• 6430

1. 1

   Examine all wiring harnesses and connectors associated with the CAN BUS and the wheel speed sensor/transmission output speed sensor for signs of corrosion, damage, or disconnection.

2. 2

   Verify that the CAN BUS communication between the PLC/TIA and the PTA/TCU control software is intact and not interrupted.

3. 3

   Test the wheel speed sensor (transmission output speed sensor) to verify it is reading correctly and providing accurate data.

4. 4

   Verify that the TIA/PLC control software is functioning correctly and is not experiencing a standalone glitch.

1. 1

   Repair Wiring

   If any damaged wiring or corroded pins were found during the diagnostic checks on the CAN BUS lines or sensor harness, repair or replace the affected sections to restore proper electrical connection.

2. 2

   Replace the Sensor

   If the wiring is intact but the wheel speed sensor (transmission output speed sensor) fails operational checks, remove and replace the faulty sensor.

3. 3

   Update Software

   Update the TIA/PLC and PTA/TCU control unit software to the latest OEM versions to prevent future communication handshake issues.

4. 4

   Clear Codes and Test

   Clear the fault codes from the PTA/TCU and test drive the tractor to ensure the transmission output speed is being read accurately and the code does not return.