John Deere 520589.02 – PTD (Range Module Direct Drive): Wheel Speed Sensor (Channel 2), Incorrect Speed

The control software expects but does not receive the wheel speed signal from channel 2, or if there is a speed discrepancy of more than 10 km/h (6.2 mph) compared to the wheel speed sensor on channel 1. When this error is detected, the control software may limit or disable transmission functions.

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

1. 1

   Shift the tractor back into the Park position to attempt a system recovery/reset

2. 2

   Check the wheel speed sensor on channel 2 for any signs of physical damage, disconnection, or poor alignment/mounting

3. 3

   Inspect the wiring harness and connectors leading to the wheel speed sensors for signs of wear, corrosion, or broken wires

4. 4

   Use a diagnostic tool to compare the live data readings from both wheel speed sensors (Channel 1 vs. Channel 2) to identify discrepancies

5. 5

   Ensure the PTD control unit is correctly processing the signals and check if a software update or reprogramming is required

1. 1

   Clear and Reset

   Cycle the ignition and shift into Park to see if the code clears.

2. 2

   Repair Wiring

   If the diagnostic inspection reveals corroded pins or damaged wires in the sensor harness, repair or replace the affected wiring/connectors.

3. 3

   Replace Sensor

   If the wiring is intact but Channel 2 is still providing incorrect or missing readings, replace the wheel speed sensor.

4. 4

   Software Update

   If the sensor and wiring are good, reprogram or update the control unit software.

5. 5

   Post-Repair Verification

   After repairs, test drive the tractor and monitor the wheel speed sensors via a diagnostic tool to ensure they are providing accurate, consistent, and matching readings.