John Deere 628.13 – PTF: Control Unit Internal Fault

An electronic malfunction or internal software configuration issue is registered within the control unit during its boot sequence. The module is failing its internal self-check or is stuck in boot mode.

• 6110M
• 6120M
• 6130M
• 6145M
• 6155M
• 6175M
• 6195M
• 6110R
• 6120R
• 6130R
• 6145R
• 6155R
• 6175R
• 6195R
• 6215R
• 9470RT
• 9520RT
• 9570RT

1. 1

   Restart the tractor by cycling the key to force the module to attempt a new boot sequence and check if the code clears

2. 2

   Check for other accompanying CAN BUS communication codes (e.g., 'PTF Message Missing' or 'Loss of CAN Messages') to see if the module dropped off the network

3. 3

   Visually inspect the Front Chassis Module (PTF) for physical damage, water ingress, or burnt components

4. 4

   Test power and ground connections to verify the module is receiving proper voltage (no over/under-voltage) and has a clean ground connection

5. 5

   Check if a software update is available, as a dealer reflash may resolve an internal boot loop

1. 1

   Power Down

   Turn off the tractor and disconnect the battery to prevent electrical spikes.

2. 2

   Locate the Module

   Locate the Front Chassis Module (PTF) on the machine's front chassis frame.

3. 3

   Disconnect

   Carefully unplug the CAN BUS and power wiring harness connectors from the module.

4. 4

   Remove

   Unbolt the mounting hardware securing the faulty module to the chassis and remove it.

5. 5

   Install

   Mount the new Front Chassis Module and secure the hardware.

6. 6

   Reconnect

   Reconnect the wiring harnesses and restore battery power.

7. 7

   Calibration/Programming

   A John Deere dealer must connect Service ADVISOR to program the End-of-Line (EOL) software and calibrate the module to the specific tractor's CAN network.