SSU - GREENSTAR™ AutoTrac Assisted Steering System Unit (If Equipped) Diagnostic Trouble Codes

Control Unit SPN FMI Pri. Fault Description
SSU 84 09 2 CAN bus message containing ground speed not available
SSU 168 03 2 Electronic power (cc# 021) out of range high
SSU 168 04 2 Electronic power (cc# 021) out of range low
SSU 177 09 2 CAN bus message containing transmission oil temperature not available.
SSU 517 09 2 CAN bus message containing GPS based ground speed not available
SSU 628 02 2 Control unit SSU malfunction: EEPROM check sum invalid. Clear code. Replace control unit SSU if condition persists.
SSU 628 12 2 Controller cannot exit boot block program. Disconnect effected control unit connectors. Wait 30 seconds. Reconnect connectors. Reprogram controller with latest software. Replace control unit if condition persists.
SSU 629 12 2 Control unit SSU malfunction: watchdog timer reset. Clear code. Replace control unit SSU if condition persists.
SSU 630 13 2 AutoTrac system not calibrated
SSU 767 09 2 CAN Bus message containing backup alarm switch information not available
SSU 1504 09 2 CAN bus message containing seat switch status not available
SSU 1504 14 2 Operator out of seat during AutoTrac operation
SSU 1639 09 2 CAN bus message containing hydraulic oil temperature not available
SSU 1807 02 2 The Steering input device indicates clockwise rotation when the steering flowmeter indicates counter-clockwise rotation.
SSU 1807 08 2 Steering input device 1 signal A (cc# 877) or steering input device 1 signal B (cc# 878) missing from controller inputs.
SSU 1807 10 2 Steering input device 1 signals do not match steering input device 2 signals. Clear code. Replace Steering input device if condition persists.
SSU 522273 00 2 Steering valve signal (cc# 959) out of range high
SSU 522273 01 2 Steering valve signal (cc# 959) out of range low
SSU 522331 09 2 CAN Bus message containing multifunction control handle position sensor information not available.
SSU 522387 07 2 Steering valve is commanded to turn combine, but steering flowmeter indicates no oil movement.
SSU 522394 09 2 CAN bus message containing terrain compensation module information not available
SSU 523651 02 2 Control unit SSU malfunction: stack overflow. Clear code. Replace control unit SSU if condition persists.
SSU 523698 09 2 CAN bus message containing GREENSTAR display AutoTrac navigation information not available
SSU 523766 02 2 Invalid AutoTrac activation code. Go to John Deere web site www.stellarsupport.com and provide serial number of control unit SSU and vehicle serial number to obtain valid activation code.

 

GREENSTAR is a trademark of Deere & Company

OUO6075,00004C9 -19-22JUN06-1/4

Control Unit SPN FMI Pri. Fault Description
SSU 523767 09 2 CAN bus message containing resume button 2 and resume button 3 status not available.
SSU 523795 03 3 Steering valve signal (cc# 959) less than 25% duty cycle
SSU 523795 12 2 Steering valve assembly or wiring faulty
SSU 523795 13 2 Steering valve calibration fault. Recalibrate with rear wheels off the ground. Replace steering valve (A67) if condition persists.
SSU 523810 00 2 Steering valve supply power (cc# 081/021 - pin H1) out of range high.
SSU 523810 01 2 Steering valve power (cc# 961) out of range low
SSU 523821 02 2 Machine mismatch (8000/9000, or Tracks/wheels). There is a problem with harness jumper (cc# 908)
SSU 523822 02 2 Steering flowmeter direction does not agree with steering input device direction
SSU 523822 05 2 Steering flowmeter power (cc# 879) current out of range low - less than 20 mA.
SSU 523822 06 2 Steering flowmeter power (cc# 879) current out of range high - greater than 50 mA.
SSU 523822 07 2 Steering flowmeter range too small during calibration - less than 400 counts at full left or full right turn. Recalibrate. Replace steering flowmeter if condition persists.
SSU 523822 08 2 Flowmeter signal 1 (cc# 892) or flowmeter signal 2 (cc# 893) missing.
SSU 523822 10 2 Wheel motion detected by steering flowmeter with no Steering input device motion
SSU 523822 14 2 Flowmeter signal 1 (cc# 892) and flowmeter signal 2 (cc# 893) indicate different steering rates.
SSU 524221 09 2 Go to John Deere web site www.stellarsupport.com and select GREENSTAR System update.

 

OUO6075,00004C9 -19-22JUN06-2/4

GREENSTAR ™ AutoTrac Assisted Steering System Unit (If Equipped)-SSU Last Exit Codes

Control Unit SPN FMI Last Exit Codes Description
SSU     None The system is just initializing - nothing has been checked yet.
SSU     Steer Whl Indicates steering wheel has been moved manually disabling/deactivating AutoTrac operation.
SSU     Too Slow Indicates vehicle speed is too slow, which causes AutoTrac to not enable/activate, or causes AutoTrac to disable/deactivate when active.
SSU     Too Fast Indicates vehicle speed is too fast, which causes AutoTrac to not enable/activate, or causes AutoTrac to disable/deactivate when active.
SSU     Reverse Indicates vehicle is in reverse. AutoTrac does not operate in reverse gear.
SSU     Track Indicates vehicle has wandered to a different parallel track number, which causes AutoTrac to disable/deactivate.
SSU     Not Dual Indicates global position system communication is not dual frequency, which causes AutoTrac to not enable/activate, or causes AutoTrac to disable/deactivate when active.
SSU     SSU Err Indicates there is a SSU Diagnostic Trouble code, which causes AutoTrac to not enable/activate, or causes AutoTrac to disable/deactivate when active.
SSU     OK Indicates to the operator the process of disabling AutoTrac by pressing button next to AutoTrac icon was successful.
SSU     No GSD Indicates the SSU is not communicating with the GREENSTAR Display or GREENSTAR Display messages being sent to SSU are not correct.
SSU     No PT Indicates GREENSTAR Parallel Tracking setup has not been established for this field. An A/B line needs to be set before AutoTrac activation.
SSU     KeyCard Indicates the system does not have a AutoTrac KeyCard, or there is a problem with the operator's AutoTrac KeyCard.
SSU     Heading Indicates the heading path is out of range causing AutoTrac to deactivate, or when trying to activate the heading is greater than 45° from track.
SSU     Lateral Indicates the lateral error is out of bounds causing AutoTrac to deactivate, or the lateral error is too great for AutoTrac to activate.
SSU 1504 14 Operator Indicates the operator is out of seat, or the seat switch is not working, which causes AutoTrac to not enable/activate, or causes AutoTrac to disable/deactivate when active.
SSU     Oil Temp Indicates the oil temperature is below 0°C/32°F. AutoTrac will not activate until oil temperature is above 0°C/32°F.
SSU     No TCM Indicates the system can not detect a terrain compensation module. AutoTrac will not activate unless there is a TCM on CAN bus.
SSU     Act Code Indicates the wrong SSU activation code was entered.
SSU     Diag Mode Indicates the system is in calibration mode when AutoTrac is attempting to enable/activate.

 

GREENSTAR is a trademark of Deere & Company

OUO6075,00004C9 -19-22JUN06-3/4

Control Unit SPN FMI Last Exit Codes Description
SSU     Hdr Sw Indicates to the operator the header switch is not ON, which causes AutoTrac to not enable/activate, or causes AutoTrac to disable/deactivate when active.
SSU     Road Sw Indicates to the operator the Road switch is ON, which causes AutoTrac to not enable/activate, or causes AutoTrac to disable/deactivate when active.

 

OUO6075,00004C9 -19-22JUN06-4/4