John Deere 524216.19 – PTF (Front Chassis Control Unit / Front PTO Control Software): Issue With Message On The CAN BUS From The Main Control Module Relating To The Front PTO Switch Signal

Generated when the Operator Interface Control (OIC) software cannot determine the physical position/values of the front PTO switch and therefore cannot provide the CAN bus with valid data. Because the data is missing, a transmitted replacement (default) value is sent over the CAN bus, which triggers this malfunction code.

• 6110M
• 6120M
• 6130M
• 6145M
• 6155M
• 6175M
• 6195M
• 6110R
• 6120R
• 6130R
• 6145R
• 6155R
• 6175R
• 6195R
• 6215R
• 6135R
• 6230R
• 6250R
• 6090MC
• 6090RC
• 6100MC
• 6100RC
• 6110MC
• 6110RC

1. 1

   Check the display for any active OIC (Operator Interface Control) diagnostic trouble codes and resolve those first, as the PTF relies on the OIC for the switch signal.

2. 2

   Clear the fault codes from the display memory to see if the code is active or just a stored historical anomaly.

3. 3

   Inspect the physical condition of the Front PTO switch on the operator console for sticking, damage, or liquid intrusion.

4. 4

   Inspect the wiring harness and connectors between the Front PTO switch and the OIC module for open circuits, shorts to ground, or loose pins.

1. 1

   Park the tractor on a level surface, turn off the engine, and remove the key.

   Park the tractor on a level surface, turn off the engine, and remove the key.

2. 2

   Access the operator console or armrest where the Front PTO switch is mounted.

   Access the operator console or armrest where the Front PTO switch is mounted. You may need to remove the retaining screws at the bottom of the armrest/console to access the underside.

3. 3

   Disconnect the electrical harness connector from the Front PTO switch.

   Disconnect the electrical harness connector from the Front PTO switch.

4. 4

   Using a multimeter, test the switch for proper continuity when toggled between the ON and OFF positions.

   Using a multimeter, test the switch for proper continuity when toggled between the ON and OFF positions.

5. 5

   If the switch fails the continuity test or feels mechanically broken, replace the Front PTO switch.

   If the switch fails the continuity test or feels mechanically broken, replace the Front PTO switch.

6. 6

   If the switch tests good, use the multimeter to check the wiring harness between the switch connector and the OIC module for continuity and ensure there are no shorts to ground.

   If the switch tests good, use the multimeter to check the wiring harness between the switch connector and the OIC module for continuity and ensure there are no shorts to ground. Repair any damaged wiring.

7. 7

   Reconnect the switch, reassemble the console/armrest, and turn the key to the ON position.

   Reconnect the switch, reassemble the console/armrest, and turn the key to the ON position.

8. 8

   Clear the stored fault codes from the tractor's display and test the engagement of the Front PTO to verify the repair.

   Clear the stored fault codes from the tractor's display and test the engagement of the Front PTO to verify the repair.