Armrest Interface Control Unit (AIC) Diagnostic Trouble Codes

Although the diagnostic codes listed below are not a complete list of the diagnostic trouble codes, they do reflect codes which may be observed while operating the tractor and have corrective action that the operator can correct. Many codes which appear may be corrected simply by cycling key switch or by following the solution on the CommandCenter™ page, then cycling tractor power.

If corrective action cannot be taken after cycling power to the tractor or if there are any questions, contact your John Deere™ dealer.

Armrest Interface Control Unit (AIC) Diagnostic Trouble Codes
Diagnostic Trouble Code	System	Solution
AIC 000158.04	Electrical System	Armrest supply voltage low. Reduce electrical load or increase engine RPM to attempt vehicle recovery.
AIC 520285.02	Operator Controls	Rear Hitch Lock Switch fault. Put Switch to Center position to attempt system recovery.
AIC 520285.03	Operator Controls	Rear Hitch Lock switch voltage fault. Set switch to un-pressed position to attempt system recovery.
AIC 520285.11	Operator Controls	Rear Hitch Lock Switch stuck fault. Set switch to Center position to attempt system recovery.
AIC 520286.02	Operator Controls	Rear Hitch Lower Setpoint Switch fault. Put Switch to Center position to attempt system recovery.
AIC 520286.04	Operator Controls	Rear Hitch Lower Setpoint switch voltage fault. Set switch to un-pressed position to attempt system recovery.
AIC 520286.11	Operator Controls	Rear Hitch Lower Setpoint Switch stuck fault. Set switch to Center position to attempt system recovery.
AIC 520602.02	Operator Controls	Set Speed Resume Switch circuit fault. Cycle resume switch and restart engine to attempt vehicle recovery.
AIC 520602.03	Operator Controls	Set Speed Resume Switch circuit fault. Cycle resume switch and restart engine to attempt vehicle recovery.
AIC 520602.04	Operator Controls	Set Speed Resume Switch circuit fault. Cycle resume switch and restart engine to attempt vehicle recovery.
AIC 520602.11	Operator Controls	Set Speed Resume Switch stuck. Cycle resume switch and restart engine to attempt vehicle recovery.
AIC 522189.11	Operator Controls	iTEC 3-4 switch stuck fault. Set switch to un-pressed position to attempt system recovery.
AIC 523349.03	Operator Controls	AutoTrac resume switch voltage fault. Set switch to un-pressed position to attempt system recovery.
AIC 523349.04	Operator Controls	AutoTrac resume switch voltage fault. Set switch to un-pressed position to attempt system recovery.
AIC 523349.11	Operator Controls	AutoTrac resume switch stuck fault. Set switch to un-pressed position to attempt system recovery.
AIC 523670.11	Operator Controls	Drive lever stuck fault. Set lever to neutral position to attempt system recovery.
AIC 523745.11	Operator Controls	iTEC switch stuck fault. Set switch to un-pressed position to attempt system recovery.
AIC 523776.11	Operator Controls	Transport Lock Switch stuck fault. Set switch to un-pressed position to attempt system recovery.
AIC 523923.02	Operator Controls	SCV I control lever sensor voltage fault. Set lever to neutral position to attempt system recovery.
AIC 523923.04	Operator Controls	SCV I control lever sensor voltage fault. Set lever to neutral position to attempt system recovery.
AIC 524019.31	Operator Controls	Ground speed control lever position fault. Return to Park position to attempt system recovery.
AIC 524020.31	Operator Controls	Power up with transmission in gear. Return to Park. Restart engine to attempt vehicle recovery.
AIC 524102.02	Operator Controls	SCV V control lever sensor voltage fault. Set lever to neutral position to attempt system recovery.
AIC 524102.03	Operator Controls	SCV V control lever sensor voltage fault. Set lever to neutral position to attempt system recovery.
AIC 524102.04	Operator Controls	SCV V control lever sensor voltage fault. Set lever to neutral position to attempt system recovery.
AIC 524103.02	Operator Controls	SCV IV control lever sensor voltage fault. Set lever to neutral position to attempt system recovery.
AIC 524103.03	Operator Controls	SCV IV control lever sensor voltage fault. Set lever to neutral position to attempt system recovery.
AIC 524103.04	Operator Controls	SCV IV control lever sensor voltage fault. Set lever to neutral position to attempt system recovery.
AIC 524104.02	Operator Controls	SCV III control lever sensor voltage fault. Set lever to neutral position to attempt system recovery.
AIC 524104.03	Operator Controls	SCV III control lever sensor voltage fault. Set lever to neutral position to attempt system recovery.
AIC 524104.04	Operator Controls	SCV III control lever sensor voltage fault. Set lever to neutral position to attempt system recovery.
AIC 524105.02	Operator Controls	SCV II control lever sensor voltage fault. Set lever to neutral position to attempt system recovery.
AIC 524105.03	Operator Controls	SCV II control lever sensor voltage fault. Set lever to neutral position to attempt system recovery.
AIC 524105.04	Operator Controls	SCV II control lever sensor voltage fault. Set lever to neutral position to attempt system recovery.
AIC 524212.11	Operator Controls	Rear Hitch switches (raise or lower) stuck fault. Set switch to un-pressed position to attempt system recovery.
AIC 524222.03	Operator Controls	APS resume switch voltage fault. Set switch to un-pressed position to attempt system recovery.
AIC 524222.04	Operator Controls	APS resume switch voltage fault. Set switch to un-pressed position to attempt system recovery.
AIC 524222.11	Operator Controls	APS resume switch stuck fault. Set switch to un-pressed position to attempt system recovery.
AIC 524224.02	Operator Controls	Rear PTO switch circuit fault. Cycle PTO switch and restart engine to attempt vehicle recovery.