John Deere 000628.02 – ACU: Armrest Module Software Configuration Fault

The system has detected an internal fault related to the software configuration of the Armrest Control Unit (ACU) or another control module. The module's internal software or configuration data is incorrect, corrupt, or has been reset to factory defaults (often referred to as an EOL Data Fault). This malfunction leads to restricted functionality of the systems controlled by the module and can sometimes be triggered during a reprogramming event.

• 9x30 Series
• 9230
• 9330
• 9430
• 9530
• 9630
• 6R Series
• 6110R
• 6120R
• 6130R
• 6145R
• 6155R
• 6175R
• 6195R
• 6215R
• 7R Series
• 8R Series
• 9R Series
• 9560-9870 STS
• 9560 STS
• 9670 STS
• 9870 STS
• C670
• T-series
• W-series
• 7760
• R4040i
• R4050i
• 30-Series
• 7630-7930
• 8130-8530
• 7200R
• 7230R
• 9360R
• 9560R
• 8235R
• 8285R
• 8360R

1. 1

   Restart the machine to perform a power cycle, which can sometimes resolve temporary software glitches

2. 2

   Check for other active fault codes, as a communication error or voltage supply problem with another controller could trigger this fault

3. 3

   Visually inspect the electrical system (batteries and alternator) for damage, corrosion, or debris that might cause unpredictable voltage issues

1. 1

   Perform initial reset

   Shut down the tractor, wait for a brief period, and restart it to see if the power cycle clears the fault.

2. 2

   Perform dealer diagnostics

   If the code reappears, connect diagnostic software (such as John Deere Operations Center PRO Service) to properly diagnose the module.

3. 3

   Reprogram control unit

   Attempt to reprogram the affected control unit with the latest software to correct the configuration data.

4. 4

   Replace control module

   If reprogramming fails or the module has an internal hardware failure (such as a failed EEPROM test), replace the control unit.