John Deere 523767.02 – SSU: AutoTrac Resume Switch Circuit Fault

The Steering System Control Unit (SSU) has detected a conflict or an invalid signal from the AutoTrac resume switch (cc# 909), which is used to engage the guidance system. The system may interpret the switch signal as faulty, stuck, or missing when expected. This condition requires immediate attention to prevent operational issues and prevents the AutoTrac system from engaging.

• 2204
• 4895
• 4995
• 6020
• 6120
• 6220
• 6320
• 6420
• 7220
• 7320
• 7420
• 7520
• 7630
• 7715
• 7720
• 7730
• 7815
• 7820
• 7830
• 7920
• 7930
• 8130
• 8230
• 8230T
• 8330
• 8330T
• 8430
• 8430T
• 8530
• 9230
• 9330
• 9430
• 9530
• 9630
• 7M Series
• 7R Series
• 8R Series
• 8RT Series
• 9R Series
• 9RT Series

1. 1

   Power cycle the system (cold boot): Turn off the machine completely, unplug the GreenStar display and StarFire receiver, wait 10-15 seconds, plug them back in, and restart to clear temporary corrupted data

2. 2

   Physically inspect the resume switch to ensure it moves freely and is not jammed or stuck in the 'on' or 'pressed' position

3. 3

   Check the GreenStar display diagnostic page to view the status of the resume switch (verifying if it reads 'ON' or 'OFF')

4. 4

   Visually inspect the wiring harness and connectors connected to the AutoTrac resume switch for cracks, abrasions, or corrosion (on tractors with an ATU steering wheel, check where the auxiliary harness T's into the main Greenstar harness)

5. 5

   Review the 'Last Exit Code' on the GreenStar display diagnostics page (book with a wrench icon) for additional clues on why the system disengaged

1. 1

   Isolate the fault

   Perform the preliminary diagnostic checks. If power cycling, checking for a stuck switch, and wiring inspections do not resolve the issue, the switch itself is the most likely component to have failed.

2. 2

   Order replacement part

   Using the machine's model and serial number, procure the correct replacement resume switch from a John Deere parts catalog.

3. 3

   Replace the switch

   Locate the switch (CommandArm, right-hand console, or AutoTrac Universal steering wheel assembly). Remove the console paneling or switch housing, disconnect the electrical pigtail, remove the old switch, install the new switch, and reconnect the pigtail.

4. 4

   Test operation

   Start the machine and test the function of the AutoTrac resume switch to ensure the guidance system engages and the fault code does not reappear.