The AIC control software receives the signals from the relevant operating controls. It processes these signals and makes the information available on the CAN bus or LIN bus. If a CommandARM™ is installed, the AIC control software is located in the A012 control unit. The AIC control software is included in the cab control unit. The control software receives signals from:
– LIN Bus Module (Shift Console)
– Module with Button for Transport Lock of the E-SCVs and Button for ISOBUS (ISO)
– LIN Bus Module (Position H)
– LIN Bus Module (Position W)
– LIN Bus Module (Position D)
– LIN Bus Module (Position E)
– LIN Bus Module (Position P)
– LIN Bus Module (Position F)
– LIN Bus Module (Position G)
– LIN Bus Module (Position H)
– LIN Bus Module (Position F and G)
– LIN Bus Module (Position S)
– LIN Bus Module (Position K)
– LIN Bus Module (Multi-Function Lever)
– Control Lever for E-SCV I
– Control Lever for E-SCV II
– Control Lever for E-SCV III
– Control Lever for E-SCV IV
– Sensor Unit for Speed Control Lever
– Shift Unit (DirectDrive Transmission)
– Front PTO Switch (CommandARM™)
– Rear PTO Switch (CommandARM™)
– Front PTO Switch
– Rear PTO Switch
– Hand Throttle Potentiometer (PowrQuad™ Transmission)
– Potentiometer for Speed Control Lever
The software processes the received signals and transmits them to the respective position feedback units via CAN Bus and LIN Bus.
John Deere AIC fault codes / John Deere AIC diagnostic trouble codes
NOTE:This page only indicates the meaning of the fault codes. For complete troubleshooting information, see the technical manuals.
AIC 000158.03 (AIC 158.03)— Switched Supply Voltage High
Code caused by: Armrest Interface Control Unit (AIC) switched supply voltage more than 18 V.
Control Unit Response: Function Disabled
AIC 000158.04 (AIC 158.04)— Switched Supply Voltage Low
Code caused by: Armrest Interface Control Unit (AIC) switched supply voltage below 9.0 V.
Control Unit Response: Function Disabled
AIC 000168.03 (AIC 168.03)— AIC Unswitched Supply Voltage High
Code Caused By: Armrest Interface Control Unit (AIC) unswitched supply voltage more than 18 V.
Control Unit Response: Function Disabled (OFF)
AIC 000168.04 (AIC 168.04)— AIC Unswitched Supply Voltage Low
Code Caused By: Armrest Interface Control Unit (AIC) unswitched supply voltage below 9.0 V.
Control Unit Response: Function Disabled (OFF)
AIC 000628.02 (AIC 628.02)— Control Software Internal Fault
Error when reading the internal module (EEPROM).
Reaction of the control software: Limited or no function of the control software.
АIC 000628.12 (АIC 628.12)— AIC Programming
Code caused by: AIC control unit detects that it is in the process of updating software.
Programming codes occur only during process of updating or loading new software. It is not an error and there is no diagnosis required.
Control Unit Response: No function available until programming is complete.
AIC 000629.12 (AIC 629.12)— AIC Control Unit Fault
Code caused by: Armrest control unit software failed to execute in allotted time.
Control Unit Response: Defaults to Neutral
AIC 000639.12 (AIC 639.12)— Vehicle CAN Bus Fault
Code Caused By: Armrest Interface Control Unit (AIC) error limit has been exceeded. This can be caused by a short, open, or too much CAN Bus traffic.
Control Unit Response: Function Disabled (OFF)
AIC 000639.14 (AIC 639.14)— CAN Bus Error Limit Exceeded
Code Caused By: Armrest Interface Control Unit (AIC) error limit has been exceeded. This can be caused by a short, open, or too much CAN Bus traffic.
Control Unit Response: Function Disabled (OFF)
AIC 002007.09 (AIC 2007.09)— RPT Message Missing
Code caused by: Armrest control unit not receiving required messages from the RPT.
Data transfer problem between the AIC control software and RPT control software. This indicates a problem in the CAN Bus or in the transmitting control software.
Control Unit Response: Function degraded
AIC 002036.09 (AIC 2036.09)— PTF Message Missing
Code caused by: Armrest control unit not receiving required messages from front PTO control unit (PTF).
Data transfer problem between the AIC control software and SCC control software. This indicates a problem in the CAN Bus or in the transmitting control software.
Control Unit Response: Limited function
AIC 003509.03 (AIC 3509.03)— AIC 5 V Sensor Supply 1 Voltage High
Code caused by: Armrest Interface Control Unit 5 V sensor supply 1 voltage high.Voltage supply of 5-volt components above 5.25 volts. This indicates a short to 12 V.
Control Unit Response: Function Degraded
AIC 003509.04 (AIC 3509.04)— AIC 5 V Sensor Supply 1 Voltage Low
Armrest Interface Control Unit 5 V sensor supply 1 voltage low.Voltage supply of 5-volt components below 4.8 volts. This indicates a short to ground or an internal fault of the control unit.
Control Unit Response: Function Degraded
AIC 003509.06 (AIC 3509.06)— AIC 5 V Sensor Supply 1 Current High
Armrest Interface Control Unit 5 V sensor supply 1 current is too high.Circuit current too high. This indicates a short to ground.
Control Unit Response: Function Degraded
AIC 003510.03 (AIC 3510.03)— AIC 5 V Sensor Supply 2 Voltage High
Code caused by: Armrest Interface Control Unit 5 V sensor supply 2 voltage high.Voltage supply of 5-volt components above 5.25 volts. This indicates a short to 12 V.
Control Unit Response: Function Degraded
AIC 003510.04 (AIC 3510.04)— AIC 5 V Sensor Supply 2 Voltage Low
Code caused by: Armrest Interface Control Unit 5 V sensor supply 2 voltage low. Voltage supply of 5-volt components below 4.8 volts. This indicates a short to ground or an internal fault of the control unit.
Control Unit Response: Function Degraded
AIC 003510.06 (AIC 3510.06)— AIC 5 V Sensor Supply 2 Current High
Armrest Interface Control Unit 5 V sensor supply 2 current is too high. Circuit current too high. This indicates a short to ground.
Control Unit Response: Function Degraded
AIC 176865.02 — Remote Control Switch for Rear PTO, Malfunction
The diagnostic trouble code is generated if the control software cannot determine the values of the remote control switch for rear PTO and so cannot provide the CAN BUS with any data. A transmitted replacement value generates this diagnostic trouble code. RPT and OIC diagnostic trouble codes take priority.
Reaction of the control software: Limited or no function of the rear PTO.
AIC 516315.09 — Armrest Engine Speed Control Module Message Missing
Code caused by: Armrest interface control software (AIC) not receiving LIN message from engine speed control module. This indicates a problem in the LIN Bus or in the transmitting LIN Bus module.
Control Unit Response: Limited Function
AIC 516316.06 — AIC 12 V Sensor Supply 1 Current High
Code Caused By: Armrest Interface Control Unit 12 V sensor supply 1 current is too high. Circuit current too high. This indicates a short to ground.
Control Unit Response: Function Degraded
AIC 516317.06 — AIC 12 V Sensor Supply 2 Current High
Armrest Interface Control Unit 12 V sensor supply 2 current is too high. Circuit current too high. This indicates a short to ground.
Control Unit Response: Function Degraded
AIC 516446.09 — Armrest Multi-Function Lever Module Message Missing
Code caused by: Armrest interface control software (AIC) not receiving LIN message from armrest multi-function lever module. Data transfer problem between the AIC control software and LIN Bus module (positions F and G).
Control Unit Response: Function Disabled (OFF)
AIC 516461.02 — SCV XV Control Lever Switch/Sensor Conflict
Code Caused By: SCV XV Control Lever detent switch conflicts with lever position.
Control Unit Response: Limited Function
AIC 520257.02 — Auto-Mode Switch Fault
Incorrect switch logic at the Auto Mode switch detected. This may indicate a faulty switch or circuit.
Reaction of the control software: Limited or no function of the Auto Mode switch.
AIC 520285.02 — Armrest Hitch Controls Module Circuit Fault
Code Caused By: Rear hitch lock button located on armrest hitch controls module is not operating correctly.
Control Unit Response: Function Disabled (OFF)
AIC 520285.03 — Armrest Hitch Controls Module Voltage High
Code Caused By: Armrest hitch controls module output voltage is high.
Control Unit Response: Function Disabled (OFF)
AIC 520285.11 — Armrest Hitch Controls Module Circuit Fault
Code Caused By: Rear hitch lock button located on armrest hitch controls module is in pressed condition for too long.
Control Unit Response: Function Disabled (OFF)
AIC 520286.02 — Armrest Hitch Controls Module Circuit Fault
Code Caused By: Set Rear hitch lower setpoint button located on armrest hitch controls module is not operating correctly. Move the quick raise/lower switch to center position to attempt system recovery.
Control Unit Response: Function Disabled (OFF)
AIC 520286.04 — Armrest Hitch Controls Module Voltage Low
Code Caused By: Armrest hitch controls module output voltage is low. Voltage at sensor input below 0.5 volts. This indicates a short to ground.
Control Unit Response: Function Disabled (OFF)
AIC 520286.11 — Armrest Hitch Controls Module Circuit Fault
Code Caused By: Set Rear hitch lower setpoint button located on armrest hitch controls module is in pressed condition for too long. Fault at quick raise/lower switch detected. This indicates a defective switch.
Control Unit Response: Function Disabled (OFF)
AIC 520425.07 — Vehicle CAN Bus Error Counter High
Code Caused By: AIC vehicle CAN bus error counter high.
Control Unit Response: Limited function
AIC 520426.07 — Vehicle CAN Bus Error Counter High
Code Caused By: AIC vehicle CAN Bus error counter high.
Control Unit Response: Limited function
AIC 520542.03 — Vehicle CAN Bus Circuit Voltage High
Code Caused By: Armrest Interface Control Unit (AIC) detects vehicle CAN Bus Hi circuit voltage above normal, or shorted to high source. An interruption detected on this circuit can set this code. Compare other control unit 520542.03 codes to help locate possible failure.
CAN+ voltage too high. This indicates a short to 12 V.
Control Unit Response: Function Disabled (OFF)
AIC 520543.04 — Vehicle CAN Bus Circuit Voltage Low
Code Caused By: Armrest Interface Control Unit (AIC) detects vehicle CAN Bus Low circuit voltage is low. An interruption detected on this circuit can set this code. Compare other control unit 520543.04 codes to help locate possible failure.
CAN- voltage too low. This indicates a short to ground.
Control Unit Response: Function Disabled (OFF)
AIC 520870.02 — AIC Control Unit Fault
Code caused by: AIC Control Unit calibration fault or failure of calibration memory.
Control Unit Response: Function Disabled (OFF)
AIC 520871.02 — Control Software Internal Fault
Error when reading the internal module (EEPROM).
Reaction of the control software: Limited or no function of the control software.
AIC 520872.02 — AIC Control Unit Fault
Code caused by: AIC Control Unit calibration fault or failure of calibration memory.
Control Unit Response: Function Disabled (OFF)
AIC 521128.02 — CommandQuad™ Range Switch BCDE Circuit Conflict
Code caused by: The ON contact and OFF contact show same value for range switch BCDE.
Control Unit Response: Commands PARK (PARK Position Recoverable)
AIC 521128.08 — CommandQuad™ Range Switch BCDE Fault
Code caused by: CommandQuad™ range switch BCDE fault. Switch may be stuck. Set switch to unpressed position.
Control Unit Response: Commands PARK (PARK Position Recoverable)
AIC 521128.31 — CommandQuad™ Range Switches Conflict
Code caused by: CommandQuad™ range switch CDE fault. Multiple range switches read as pressed.
Control Unit Response: Commands PARK (PARK Position Recoverable)
AIC 521132.02 — CommandQuad™ Range Switch C Circuit Conflict
Code caused by: The ON contact and OFF contact show same value for range switch C.
Control Unit Response: Commands PARK (PARK Position Recoverable)
AIC 521132.08 — CommandQuad™ Range Switch C Fault
Code caused by: CommandQuad™ range switch C fault. Switch may be stuck. Set switch to unpressed position.
Control Unit Response: Commands PARK (PARK Position Recoverable)
AIC 521132.31 — CommandQuad™ Range Switches Conflict
Code caused by: CommandQuad™ range switch C fault. Multiple range switches read as pressed.
Control Unit Response: Commands PARK (PARK Position Recoverable)
AIC 521133.02 — CommandQuad™ Range Switch B Circuit Conflict
Code caused by: The ON contact and OFF contact show same value for range switch B.
Control Unit Response: Commands PARK (PARK Position Recoverable)
AIC 521133.08 — CommandQuad™ Range Switch B Fault
Code caused by: CommandQuad™ range switch B fault. Switch may be stuck. Set switch to unpressed position.
Control Unit Response: Commands PARK (PARK Position Recoverable)
AIC 521133.31 — CommandQuad™ Range Switches Conflict
Code caused by: CommandQuad™ range switch B fault. Multiple range switches read as pressed.
Control Unit Response: Commands PARK (PARK Position Recoverable)
AIC 521136.02 — CommandQuad™ Range Switch A Circuit Conflict
Code caused by: The ON contact and OFF contact show same value for range switch A.
Control Unit Response: Limited Function
AIC 521136.08 — CommandQuad™ Range Switch A Fault
Code caused by: CommandQuad™ range switch A fault. Switch may be stuck. Set switch to unpressed position.
Control Unit Response: Commands PARK (PARK Position Recoverable)
AIC 521136.31 — CommandQuad™ Range Switches Conflict
Code caused by: CommandQuad™ range switch A fault. Multiple range switches read as pressed.
Control Unit Response: Commands PARK (PARK Position Recoverable)
AIC 521143.02 — CommandQuad™ Range Switch B Circuit Conflict
Code caused by: The ON contact and OFF contact show same value for range switch B.
Control Unit Response: Commands PARK (PARK Position Recoverable)
AIC 521133.08 — CommandQuad™ Range Switch B Fault
Code caused by: CommandQuad™ range switch B fault. Switch may be stuck. Set switch to unpressed position.
Control Unit Response: Commands PARK (PARK Position Recoverable)
AIC 521133.31 — CommandQuad™ Range Switches Conflict
Code caused by: CommandQuad™ range switch B fault. Multiple range switches read as pressed.
Control Unit Response: Commands PARK (PARK Position Recoverable)
AIC 521274.09 — LIN Bus 1 Fault
Incorrect LIN Bus 1 Message, Information from LIN Bus Module (Position D or H). No data received from LIN Bus 1 network. Data transfer problem between the AIC control software and the LIN Bus 1. This indicates a problem in the LIN Bus or in the transmitting LIN Bus module.
Control Unit Response: Limited Function
AIC 521275.09 — LIN Bus 2 Fault
Incorrect LIN Bus 2 Message, Information from LIN Bus Module (Position E or M). No data received from LIN Bus 2 network. Data transfer problem between the AIC control software and the LIN Bus 2. This indicates a problem in the LIN Bus or in the transmitting LIN Bus module.
Control Unit Response: Limited Function
AIC 521276.09 — LIN Bus 3 Fault
Incorrect LIN Bus 3 Message, Information from LIN Bus Module (Position K or P). No data received from LIN Bus 3 network. Data transfer problem between the AIC control software and the LIN Bus 3. This indicates a problem in the LIN Bus or in the transmitting LIN Bus module.
Control Unit Response: Limited Function
AIC 521277.09 — LIN Bus 4 Fault
Incorrect LIN Bus 4 Message, Information from LIN Bus Module (Position F or G). No data received from LIN Bus 4 network. Data transfer problem between the AIC control software and the LIN Bus 4. This indicates a problem in the LIN Bus or in the transmitting LIN Bus module.
Control Unit Response: Limited Function
AIC 521398.02 — SCV VII Control Lever Switch/Sensor Conflict
Code Caused By: SCV VII Control Lever detent switch conflicts with lever position.
Control Unit Response: Limited Function
AIC 521399.02 — SCV VIII Control Lever Switch/Sensor Conflict
Code Caused By: SCV VIII Control Lever detent switch conflicts with lever position.
Control Unit Response: Limited Function
AIC 521401.02 — Front Hitch Control Lever Switch/Sensor Conflict
Code Caused By: Front Hitch Control Lever detent switch conflicts with lever position. Signal voltage of SCV X control lever is out of range or switch status and potentiometer signal voltage do not match.
Control Unit Response: Limited Function
AIC 521404.02 — SCV XI Control Lever Switch/Sensor Conflict
Code Caused By: SCV XI Control Lever detent switch conflicts with lever position. Signal voltage of SCV XI control lever is out of range or switch status and potentiometer signal voltage do not match.
Control Unit Response: Limited Function
AIC 521405.02 — SCV XII Control Lever Switch/Sensor Conflict
Code Caused By: SCV XII Control Lever detent switch conflicts with lever position. Signal voltage of SCV XII control lever is out of range or switch status and potentiometer signal voltage do not match.
Control Unit Response: Limited Function
AIC 521406.02 — SCV XIII Control Lever Switch/Sensor Conflict
Code Caused By: SCV XIII Control Lever detent switch conflicts with lever position. Signal voltage of SCV XIII control lever is out of range or switch status and potentiometer signal voltage do not match.
Control Unit Response: Limited Function
AIC 521407.02 — SCV XIV Control Lever Switch/Sensor Conflict
Code Caused By: SCV XIV Control Lever detent switch conflicts with sensor voltage. Signal voltage of SCV XIV control lever is out of range or switch status and potentiometer signal voltage do not match.
Control Unit Response: SCV IV disabled
AIC 521408.02 — Armrest Hitch Controls Module Switch Conflict
Code caused by: Rear hitch return to lower set point switch conflict. Error reading the LIN Bus signal for button to select saved operating depth.
Control Unit Response: Limited Function
AIC 521409.02 — Armrest Multi-Function Lever Module Circuit Fault
Code caused by: Multi-Function Lever button 1 circuit fault. Error when reading the signal of the front left switch of the multi-function lever.
Control Unit Response: Function Disabled (OFF)
AIC 521410.02 — Armrest Multi-Function Lever Module Circuit Fault
Code caused by: Multi-Function Lever button 2 circuit fault. Error when reading the signal of the front right switch of the multi-function lever.
Control Unit Response: Function Disabled (OFF)
AIC 521411.02 — Armrest Multi-Function Lever Module Circuit Fault
Code caused by: Multi-Function Lever button 3 circuit fault. Error when reading the signal of the rear left switch of the multi-function lever.
Control Unit Response: Function Disabled (OFF)
AIC 521412.02 — Armrest Multi-Function Lever Module Circuit Fault
Code caused by: Multi-Function Lever button 4 circuit fault. Error when reading the signal of the rear right switch of the multi-function lever.
Control Unit Response: Function Disabled (OFF)
AIC 521413.02 — Armrest Multi-Function Lever Module Circuit Fault
Code caused by: Multi-Function Lever button 5 circuit fault. Error when reading the signal of the side left switch of the multi-function lever.
Control Unit Response: Function Disabled (OFF)
AIC 521421.02 — Armrest Hitch Controls Module Circuit Fault
Incorrect LIN Bus Message from LIN Bus Module (Position M), Internal Fault. Data transfer problem between the AIC control software and LIN Bus module for hitch control. This indicates a problem in the LIN Bus or in the transmitting LIN Bus module.
Control Unit Response: Limited Function
AIC 521422.02 — Armrest Hitch Controls Module Circuit Fault
Incorrect LIN Bus Message from LIN Bus Module (Position M), Internal Fault. Data transfer problem between the AIC control software and LIN Bus module for hitch control. This indicates a problem in the LIN Bus or in the transmitting LIN Bus module.
Control Unit Response: Limited Function
AIC 521465.09 — Armrest Engine Speed Control Module Message Missing
Code caused by: Armrest interface control software (AIC) not receiving LIN message from engine speed control module
Control Unit Response: Limited Function
AIC 521475.02 — Armrest Rear Hitch Setup Controls Module Circuit Fault
Code caused by: LIN data fault from rear hitch setup controls module. Data transfer problem between the AIC control software and the LIN Bus module (position M). This indicates a problem in the LIN Bus or in the transmitting LIN Bus module.
Control Unit Response: Limited Function
AIC 521476.02 — Armrest Rear Hitch Setup Controls Module Circuit Fault
Code caused by: LIN data fault from rear hitch setup controls module. Data transfer problem between the AIC control software and the LIN Bus module (position S). This indicates a problem in the LIN Bus or in the transmitting LIN Bus module.
Control Unit Response: Limited Function
AIC 521480.02 — Armrest Rear Hitch Setup Controls Module Circuit Fault
Code caused by: LIN data fault from rear hitch setup controls module. Data transfer problem between the AIC control software and the LIN Bus module (position S). This indicates a problem in the LIN Bus or in the transmitting LIN Bus module.
Control Unit Response: Limited Function
AIC 521570.09 — Armrest Rear Hitch Setup Controls Module Message Missing
Code caused by: Armrest interface control software (AIC) not receiving LIN message from armrest rear hitch setup controls module. Data transfer problem between the AIC control software and the LIN Bus module (position S). This indicates a problem in the LIN Bus or in the transmitting LIN Bus module.
Control Unit Response: Limited Function
AIC 521571.09 — Armrest Front Left Module Message Missing
Code caused by: Armrest interface control software (AIC) not receiving LIN message from armrest front left module. Data transfer problem between the AIC control software and the LIN Bus module (position D). This indicates a problem in the LIN Bus or in the transmitting LIN Bus module.
Control Unit Response: Limited Function
AIC 521572.09 — Armrest Front Middle Module Message Missing
Code caused by: Armrest interface control software (AIC) not receiving LIN message from armrest front middle module. Data transfer problem between the AIC control software and the LIN Bus (position E). This indicates a problem in the LIN Bus or in the transmitting LIN Bus module.
Control Unit Response: Limited Function
AIC 521573.09 — Armrest Front Right Module Message Missing
Code caused by: Armrest interface control software (AIC) not receiving LIN message from armrest front right module. Data transfer problem between the AIC control software and the LIN Bus (position F). This indicates a problem in the LIN Bus or in the transmitting LIN Bus module.
Control Unit Response: Limited Function
AIC 521574.09 — Armrest Middle Right Module Message Missing
Code caused by: Armrest interface control software (AIC) not receiving LIN message from armrest middle right module. Data transfer problem between the AIC control software and the LIN Bus (positions F and G). This indicates a problem in the LIN Bus or in the transmitting LIN Bus module.
Control Unit Response: Limited Function
AIC 521577.09 — Armrest Rear Right Module Message Missing
Code caused by: Armrest interface control software (AIC) not receiving LIN message from armrest rear right module. Data transfer problem between the AIC control software and the LIN Bus (position P). This indicates a problem in the LIN Bus or in the transmitting LIN Bus module.
Control Unit Response: Limited Function
AIC 522077.11 — Switch for iTEC™ Program Selection, Fault
Switch for iTEC™ program selection pressed too long. This my indicate that the switch is stuck or dirty.
Reaction of the control software: Limited or no function of the iTEC™ program selection switch.
AIC 522189.02 — iTEC™ Switch Circuit Fault
Code caused by: LIN data fault from iTEC™ button. Incorrect switch logic detected at the switch for iTEC™ program selection (sequences 3 and 4). This may indicate a faulty switch or circuit.
Control Unit Response: No iTEC™
AIC 522189.03 — Switch for iTEC™ Program Selection, Voltage Too High
Voltage of switch for iTEC™ program selection too high. This indicates a short to 12 V.
Reaction of the control software: Limited or no function of the switch for iTEC™ program selection
AIC 522189.04 — Switch for iTEC™ Program Selection, Voltage Too Low
Voltage of switch for iTEC™ program selection too low. This indicates a short to ground.
Reaction of the control software: Limited or no function of the iTEC™ program selection switch.
AIC 522189.11 — Switch for iTEC™ Program Selection, Fault
Switch for iTEC™ program selection pressed too long. This may indicate a defective switch or a shorted circuit.
Reaction of the control software: Limited or no function of the switch for iTEC™ program selection
AIC 522546.02 — Gear Selector Switch, Fault
The shift transitions when upshifting/downshifting at the gear selector switch are faulty. This may indicate a defective switch or defective circuit.
Reaction of the control software: Limited or no function of the gear selector switch
AIC 522549.02 — Armrest Engine Speed Control Module Circuit Conflict
Code Caused By: The ON contact and OFF contact show same value for the foot pedal lock button. This may indicate a stuck switch or a defective circuit.
Control Unit Response: Function Disabled (OFF)
AIC 522551.02 — Armrest Engine Speed Control Module Circuit Conflict
Code Caused By: The ON contact and OFF contact show same value for the ECO push button. This may indicate a stuck switch or a defective circuit.
Control Unit Response: Function Disabled (OFF)
AIC 522553.02 — Armrest Engine Speed Control Module Circuit Conflict
Code Caused By: The ON contact and OFF contact show same value for the Field Cruise/Engine Set Speed onoff button. This may indicate a stuck switch or a defective circuit.
Control Unit Response: Function Disabled (OFF)
AIC 522769.09 — Armrest Hitch Controls Module Message Missing
Code caused by: Armrest interface control software (AIC) not receiving LIN message from armrest hitch controls module. Data transfer problem between the AIC control software and the LIN Bus module (position M). This indicates a problem in the LIN Bus or in the transmitting LIN Bus module.
Control Unit Response: Limited Function
AIC 523343.02 — Switch on Multi-Function Lever, Fault
Incorrect signal from multi-function lever. This may indicate a defective switch or defective circuit.
Reaction of the control software: Limited or no function of the additional switch on the multi-function lever
AIC 523343.03 — Switch on Multi-Function Lever, Voltage Too High
Circuit open or shorted to 12 volts.
Reaction of the control software: Limited or no function of the additional switch on the multi-function lever
AIC 523343.04 — Switch on Multi-Function Lever, Voltage Too Low
Voltage supply below 4.8 volts. This indicates a short to ground or an internal fault of the control unit.
Reaction of the control software: Limited or no function of the additional switch on the multi-function lever
AIC 523349.02 — AutoTrac™ Resume Switch Conflict
Code caused by: AutoTrac™ resume switch ON and OFF contacts show same value. This may indicate a faulty switch or circuit.
Control Unit Response: Limited or no function of the AutoTrac™ switch.
AIC 523349.03 — AutoTrac™ Switch, Voltage Too High
Circuit open or shorted to 12 volts.
Reaction of the control software: Limited or no function of the AutoTrac™ switch.
AIC 523349.04 — AutoTrac™ Switch, Voltage Too Low
Voltage at switch input below 0.50 volts. This indicates a short to ground.
Reaction of the control software: Limited or no function of the AutoTrac™ switch.
AIC 523349.11 — AutoTrac™ Switch Fault
AutoTrac™ switch pressed too long.
Reaction of the control software: Limited or no function of the AutoTrac™ switch.
AIC 523652.09 — Armrest Engine Speed Control Module Message Missing
Code caused by: Armrest interface control software (AIC) not receiving LIN message from Armrest Engine Speed Control Module. Data transfer problem between the AIC control software and the LIN Bus (position H). This indicates a problem in the LIN Bus or in the transmitting LIN Bus module.
Control Unit Response: Limited Function
AIC 523670.02 — Speed Control Lever Voltage Out of Range
There is a mismatch between the signals of the switch for speed band 2 and of the potentiometer of the speed control lever. The signal of the activated switch for speed range 2 is being received, even though the speed control lever is in speed range 1.
Reaction of the control software: With diagnostic trouble code active, the tractor cannot be moved. After the fault has been corrected, the tractor can be driven by moving the reverse drive lever via the corner park position.
Control Unit Response: Defaults to Neutral
AIC 523670.11 — Drive Lever in Gear at Startup
Code caused by: Vehicle start-up with Drive lever in gear increase position or gear decrease position.
Control Unit Response: Defaults to Neutral
AIC 523671.02 — Drive Lever Circuit Conflict
Code caused by: Forward slot of right-hand reverser position error.
Control Unit Response: Defaults to Neutral
AIC 523671.07 — Drive Lever Adjustment Fault
Code caused by: Mechanical system not responding or out of adjustment.
Control Unit Response: Lever Not In PARK
AIC 523671.11 — Shift Unit (DirectDrive Transmission), Fault
The shift lever position cannot be determined.
Reaction of the control software: Limited or no function of the transmission.
AIC 523671.13 — AIC Calibration Fault/Not Calibrated
Code caused by: Calibration for shift lever is outside maximum range, or a failed calibration was saved.
Control Unit Response: Commands PARK
AIC 523745.02 — Switch for iTEC™ Program Selection, Fault
Incorrect switch logic detected at the switch for iTEC™ program selection (sequences 1 and 2). This may indicate a faulty switch or circuit.
Reaction of the control software: Limited or no function of the iTEC™ program selection switch.
AIC 523745.03 — Switch for iTEC™ Program Selection, Voltage Too High
Voltage of switch for iTEC™ program selection too high. This may occur as a result of a faulty switch or a short circuit.
Reaction of the control software: Limited or no function of the iTEC™ program selection switch.
AIC 523745.04 — Switch for iTEC™ Program Selection, Voltage Too Low
Voltage of switch for iTEC™ program selection too low. This may occur as a result of a faulty switch or a short circuit.
Reaction of the control software: Limited or no function of the iTEC™ program selection switch.
AIC 523745.11 — Switch for iTEC™ Program Selection, Fault
Switch for iTEC™ program selection pressed too long. This may indicate that the switch is stuck or dirty.
Reaction of the control software: Limited or no function of the iTEC™ program selection switch.
AIC 523775.02 — Multi-Function Lever Hand Presence Switch Circuit Fault
Code Caused By: Multi-Function lever presence switch outputs conflicting.
Control Unit Response: Function Disabled (OFF)
AIC 523776.02 — Multi-Function Lever Transport Lock Switch Circuit Fault
Code Caused By: Multi-Function lever transport lock switch outputs conflicting.
Control Unit Response: Function Disabled (OFF)
AIC 523804.02 — Multi-Function Lever Lateral Detent Switch Circuit Fault
Code Caused By: Multi-Function lever lateral detent switch fault.
Control Unit Response: Function Disabled (OFF)
AIC 523804.03 — Multi-Function Lever Lateral Sensor Circuit Voltage High
Code Caused By: Multi-Function lever lateral sensor voltage higher than 4.80 V.
Control Unit Response: Function Disabled (OFF)
AIC 523804.04 — Multi-Function Lever, Left-Right Axis, Voltage Too Low
Voltage too low or shorted circuit at the left-right axis of the multi-function lever.
Reaction of the control software: Limited or no function of the multi-function lever.
AIC 523805.02 — Multi-Function Lever, Fore-Aft Axis, Signal Out of Range
The voltage received does not match the switch position of the multi-function lever.
Reaction of the control software: Limited or no function of the multi-function lever.
AIC 523805.03 — Multi-Function Lever (E-ICV), Fore-Aft Axis, Voltage Too High
Voltage too high or shorted circuit at the fore-aft axis of the multi-function lever.
Reaction of the control software: Limited or no function of the multi-function lever.
AIC 523805.04 — Multi-Function Lever, Fore-Aft Axis, Voltage Too Low
Voltage too low or shorted circuit at the fore-aft axis of the multi-function lever.
Reaction of the control software: Limited or no function of the multi-function lever.
AIC 523923.02 — SCV I Control Lever Switch/Sensor Conflict
Code Caused By: SCV I Control Lever detent switch conflicts with sensor voltage. Potentiometer signal voltage of E-SCV I control lever is out of range or status of control lever switch and potentiometer signal voltage do not match.
Control Unit Response: SCV I disabled
AIC 523923.03 — Control Lever for E-SCV I, Voltage Too High
Voltage too high or shorted circuit at the control lever for E-SCV I.
Reaction of the control software: Limited or no function of control lever for E-SCV I.
AIC 523923.04 — Control Lever for E-SCV I, Voltage Too Low
Voltage too low or shorted circuit at the control lever for E-SCV I.
Reaction of the control software: Limited or no function of control lever for E-SCV I.
AIC 523953.02 — Speed Control Lever Sensor Circuit Conflict
Code Caused By: Speed Control Lever Sensor voltages 1 and 2 conflict. The voltage ratio at the speed control lever sensor unit between channel 1 and channel 2 is not correct. This may be caused by a faulty circuit.
Control Unit Response: Commands PARK
AIC 523953.03 — Speed Control Lever Sensor Voltage High
Code Caused By: Speed Control Lever Sensor voltage higher than normal, or shorted to high source (AutoPowr™/IVT™/CommandQuad™ only). The measured voltage at the speed control lever is above 4.5 V. This may be caused by a faulty wiring harness or a shorted circuit.
Control Unit Response: Commands PARK
AIC 523953.04 — Speed Control Lever Sensor Voltage Low
Code Caused By: Speed Control Lever Sensor voltage lower than normal, or shorted to ground (AutoPowr™/IVT™/CommandQuad™ only). Voltage in circuit to speed control lever position sensor too low or circuit shorted. This may indicate a defective wiring harness.
Control Unit Response: Commands PARK
AIC 523954.11 — Sensor Unit for Speed Control Lever (Speed Wheel), Output Signals do Not Match
Incorrect combination of signals at the output channels (channel 1 and channel 2) of the speed wheel on thesensor unit for the speed control lever detected.
NOTE: Code may also be caused by operator constantly changing speed up and/or down one count.
Control Unit Response: Set Speeds Not Adjustable
AIC 524017.31 — Reverse Drive Lever Supply Voltage Faulty
Incorrect status of the neutral switch and/or the reverse switch detected. This indicates a problem at the switches or a general problem with the 12-volt voltage supply of the reverse drive lever.
Reaction of the control software: With diagnostic trouble code active, the tractor cannot be moved. After the error has been corrected, the tractor can be moved again after the reverse drive lever was moved to the corner park lock position.
AIC 524019.31 — Right Hand Reverser Neutral/Not-Neutral Transition Fault
Code Caused By: Lever position in transition longer than 5 seconds. This code is informational and does not necessarily indicate a failure. There are no operational checks necessary
AIC 524020.31 — Transmission in Gear at Power Up
Code Caused By: Transmission was Not in PARK at Power up (AutoPowr™/IVT™ only).
Control Unit Response: Commands PARK (PARK Position Recoverable)
NFORMATION FOR OPERATOR: Reverse Drive Lever in Position for Forward or Reverse Travel During Start-Up Procedure
The reverse drive lever is in the position for forward or reverse travel while the engine is being started or while the ignition is being turned on.
Alarm level: Caution. The diagnostic trouble code is not stored. It is intended only as information for the operator.
Reaction of the control software: The diagnostic trouble code is deactivated after moving the reverse drive lever to the corner park lock position and turning the key switch off and on.
AIC 524021.31 — Multiple Reverser Switches Conflict
Code Caused By: More than two reverser lever switches have failed. An incorrect combination of signals received from the reverse drive lever (neutral, park lock, direction, power zero or tractor movement switches).
Control Unit Response: Commands PARK (PARK Position Recoverable)
AIC 524096.02 — Armrest Engine Speed Control Module Message Fault
Code caused by: Armrest interface control software (AIC) receiving LIN message fault from engine speed control module. The output signals of the potentiometer on the speed control lever do not match. The voltage at channel 1 must be double the voltage of channel 2.
Control Unit Response: Limited Function
AIC 524096.03 — Armrest Engine Speed Control Module Voltage High
Code caused by: Armrest engine speed control module voltage is too high. Voltage at the signal input of channel 1 of the potentiometer above 4.5 volts. This indicates a problem at the signal lead or at the ground connection of the potentiometer.
Control Unit Response: Limited Function
AIC 524096.04 — Armrest Engine Speed Control Module Voltage Low
Code caused by: Armrest engine speed control module voltage is too low. The diagnostic trouble code is generated if the control software measures a voltage of less than ,5 V at the signal input from channel 1 of the potentiometer. This indicates a problem on the signal lead or a problem with the potentiometer supply voltage.
Control Unit Response: Limited Function
AIC 524101.02 — SCV VI Control Lever Switch/Sensor Circuit Conflict
Code Caused By: SCV VI Control Lever detent switch conflicts with sensor voltage. The control lever position does not match the voltage present at the E-SCV VI sensor.
Control Unit Response: SCV VI disabled
AIC 524102.02 — SCV V Control Lever Switch/Sensor Circuit Conflict
Code Caused By: SCV V Control Lever detent switch conflicts with sensor voltage. The control lever position does not match the voltage present at the E-SCV V sensor.
Control Unit Response: SCV IV disabled
AIC 524103.02 — SCV IV Control Lever Switch/Sensor Circuit Conflict
Code Caused By: SCV IV Control Lever detent switch conflicts with sensor voltage. The control lever position does not match the voltage present at the E-SCV IV sensor.
Control Unit Response: SCV IV disabled
AIC 524104.02 — SCV III Control Lever Switch/Sensor Circuit Conflict
Code Caused By: SCV III Control Lever detent switch conflicts with sensor voltage. The control lever position does not match the voltage present at the E-SCV III sensor.
Control Unit Response: SCV IV disabled
AIC 524104.09 — SCV III Control Lever Switch/Sensor Circuit Conflict
Code Caused By: SCV III Control Lever detent switch conflicts with sensor voltage.
Control Unit Response: SCV IV disabled
AIC 524105.02 — SCV II Control Lever Switch/Sensor Circuit Conflict
Code Caused By: SCV II Control Lever detent switch conflicts with sensor voltage. The control lever position does not match the voltage present at the E-SCV II sensor.
Control Unit Response: SCV II disabled
AIC 524212.02 — Rear Hitch Control Lever Switch/Sensor Circuit Conflict
Code Caused By: Rear hitch control lever switch conflicts with sensor voltage. Incorrect signal received from the depth-setting potentiometer of the hitch control.
Control Unit Response: SCV II disabled
AIC 524216.02 — Front PTO Switch Circuit Conflict
Code Caused By: Front PTO switch ON and OFF shows same value. This indicates a defective circuit.
Control Unit Response: Front PTO is disabled
AIC 524216.09 — Incorrect CAN Bus Message, Information from PTF Control Software
Data transfer problem between the AIC control software and PTF control software. This indicates a problem in the CAN bus or in the transmitting control software.
Reaction of the control software: Limited or no function of the control software.
AIC 524224.02 — Rear PTO Switch Faulty
Incorrect signal at the rear PTO switch. The ON and OFF contacts send the same signal. This indicates a defective circuit.
Reaction of the control software: Limited or no function of the rear PTO.
AIC 524224.09 — Incorrect CAN Bus Message, Information from RPT Control Software
Data transfer problem between the AIC control software and RPT control software. This indicates a problem in the CAN bus or in the transmitting control software.
Reaction of the control software: Limited or no function of the control software.