The control unit CAB and the control unit of the Active Seat (ASU) share the same box. The CAB application receives direct input signals and indirect from sensors, switches and other units of control and executes the appropriate functions, according to the ask the operator.
Other CAB—Functions:
– clutch pedal
– brake pedal switches (PST)
– brake pedal sensors (AutoPowr/IVT)
– secondary brake
– differential lock
– operator’s seat
– turn signal
– implement
John Deere CAB fault codes / John Deere CAB diagnostic trouble codes
NOTE:This page only indicates the meaning of the fault codes. For complete troubleshooting information, see the technical manuals.
CAB 000091.02 (CAB 91.02)— Foot Throttle Sensor Circuit Voltage Conflict
Code Caused By: CAB control unit detects that the foot throttle sensor channel 2 voltage is not one-half of the foot throttle sensor channel 1 voltage.
Control Unit Response: Disables Foot Throttle.
CAB 000091.03 (CAB 91.03)— Foot Throttle Sensor Circuit Voltage High
Code Caused By: CAB control unit detects that the foot throttle sensor input voltage is high.
Control Unit Response: Maximum possible throttle operation is limited to half throttle.
CAB 000091.04 (CAB 91.04)— Foot Throttle Sensor Circuit Voltage Low
Code Caused By: CAB control unit detects that the foot throttle sensor input voltage is low.
Control Unit Response: Maximum possible throttle operation is limited to half throttle.
CAB 000158.03 (CAB 158.03)— CAB Switched Supply Voltage High
Code Caused By: CAB control unit detects that the switched battery supply voltage from Cab Load Center wakeup circuit is high.
Control Unit Response: Limited Function.
CAB 000158.04 (CAB 158.04)— CAB Switched Supply Voltage Low
Code Caused By: CAB control unit detects that the CAB switched battery supply voltage from Cab Load Center wake-up circuit is low.
Control Unit Response: Limited Function.
CAB 000237.02 (CAB 237.02)— VIN Security Data Conflict
Code Caused By: Vehicle Identification Number (VIN) from other control units is not the same.
NOTE: If any DTCs are stored indicating CAN messages are missing, diagnose those codes first.
Control Unit Response: Limited Function.
CAB 000237.14 (CAB 237.14)— VIN Security Not Enabled
Code Caused By: Vehicle Identification Number (VIN) Security has not been enabled.
NOTE: If any DTCs are stored indicating CAN messages are missing, diagnose those codes first.
Control Unit Response: Limited Function
CAB 000237.31 (CAB 237.31)— VIN Security Messages Missing
Code Caused By: Vehicle Identification Number (VIN) not received from other control units.
NOTE: If any DTCs are stored indicating CAN messages are missing, diagnose those codes first.
Control Unit Response: Limited Function.
CAB 000628.02 (CAB 628.02)— CAB EOL Data Fault
Code Caused By: CAB control unit detects that its End Of Line (EOL) memory failed at start-up.
NOTE: End Of Line (EOL) Data Faults can sometimes be corrected by downloading new software. Attempt to download software for this application.
Control Unit Response: Limited Function.
CAB 000628.12 (CAB 628.12)— CAB Programming
Code Caused By: CAB control unit detects that it is in the process of updating software.
Control Unit Response: No functions available until programming is complete.
Programming codes occur only during process of updating or loading new software. It is not an error and there is no diagnosis required.
CAB 000629.12 (CAB 629.12)— CAB Control Unit Fault
Code Caused By: CAB control unit detects that its software failed to execute in allotted time.
Control Unit Response: Limited Functions
CAB 001079.03 (CAB 1079.03)— CAB Sensor Supply Voltage High
Code Caused By: CAB control unit detects that the CAB Sensor Supply Voltage is high.
Control Unit Response: Limited Function.
CAB 001079.04 (CAB 1079.04)— CAB Sensor Supply Voltage Low
Code Caused By: CAB control unit detects that the CAB Sensor Supply Voltage is low.
Control Unit Response: Limited Function.
CAB 001504.08 (CAB 1504.08)— Seat Switch Circuit Fault
Code Caused By: CAB control unit detects that the seat (operator presence) switch has been closed (seat occupied) continuously for too long.
Control Unit Response: Alarm remains until seat switch opens for 5 seconds
CAB 002876.02 (CAB 2876.02)— Turn Signal Switch Conflict
Code Caused By: CAB control unit detects that the turn signal switch inputs (left and right) are active simultaneously.
Control Unit Response: Turn Signals function as Hazards.
CAB 523839.02 — Secondary Brake Switch Conflict
Code Caused By: CAB control unit detects that the secondary hand brake switch signal is simultaneously open and closed.
Attention: European version only. It is not a parking brake.
Control Unit Response: No Action.
CAB 523839.13 — Secondary Brake Not Calibrated
Code Caused By: CAB control unit detects that the secondary hand brake lever switch and secondary hand brake lever position sensors are not calibrated.
Attention: European version only. It is not a parking brake.
Control Unit Response: Limited Function.
CAB 523841.03 — Secondary Brake Sensor Voltage High
Code Caused By: CAB control unit detects that the secondary hand brake lever position sensor voltage is high.
Attention: European version only. It is not a parking brake.
Control Unit Response: No Action.
CAB 523841.04 — Secondary Brake Sensor Voltage Low
Code Caused By: CAB control unit detects that the secondary hand brake lever position sensor voltage is low.
Attention: European version only. It is not a parking brake.
Control Unit Response: No Action.
CAB 523908.02 — Rear PTO External Switch Conflict
Code Caused By: CAB control unit detects that the rear PTO external switch signals simultaneous ON and OFF states.
Control Unit Response: No Action.
CAB 523922.31 — Secondary Brake ON While Moving
Code Caused By: CAB control unit detects that the secondary hand brake lever is engaged while vehicle is moving or not in neutral.
Note: Ensure that the secondary hand brake lever is fully released.
Attention: European version only. It is not a parking brake.
Control Unit Response: No Action.
CAB 524016.04 — CAB Switched Supply Voltage Low
Code Caused By: CAB control unit detects that the CAB switched battery supply voltage (digital sensor excitation), from Cab Load Center (CLC) wake-up circuit is low.
Associated Codes: If this code and other 524016.XX codes are present in other control units, perform the necessary CLC code diagnostics first.
Control Unit Response: Limited Function.
CAB 524017.13 — Left-Hand Reverser Lever Type Not Selected
Code Caused By: CAB control unit detects that the left-hand reverser lever type is not properly designated.
Control Unit Response: Commands Park (power-up recoverable).
CAB 524017.31 — Left-Hand Reverser Lever Power Circuit Fault
Code Caused By: CAB control unit detects that the left-hand reverser lever neutral switch and reverse switch input voltage does not indicate an open or closed switch status.
Control Unit Response: Commands PARK Position (PARK Position Recoverable).
CAB 524018.31 — Left-Hand Reverser Neutral/Park Transition Fault
Code Caused By: CAB control unit detects a left-hand reverser lever neutral/park transition fault.
Control Unit Response: Commands PARK Position (PARK Position Recoverable).
CAB 524019.31 — Left-Hand Reverser Neutral/Not-Neutral Transition Fault
Code Caused By: CAB control unit detects a left-hand reverser lever neutral/not-neutral transition fault.
Control Unit Response: Commands PARK Position (PARK Position Recoverable).
CAB 524020.31 — Left-Hand Reverser Lever in Gear at Power Up
Code Caused By: CAB control unit detects that the left-hand reverser (LHR) lever is in a position other than neutral or park during power up.
Control Unit Response: Commands Park (power-up recoverable)
CAB 524021.31 — Left-Hand Reverser Lever Multiple Switch Circuit Fault
Code Caused By: CAB control unit detects that two or more left-hand reverser (LHR) lever position switches failed.
Control Unit Response: Commands PARK Position (PARK Position Recoverable).
CAB 524166.02 — Right Brake Pedal Switch-Sensor Circuit Conflict
Code Caused By: CAB control unit detects that the right brake pedal sensor voltage is high while the right brake pedal switch is closed or the right brake pedal sensor voltage is low while the right brake pedal switch is open.
Attention: The AutoPowr™ / IVT™ transmission uses both a brake pedal sensor and a brake pedal switch. The PowerShift (PST) transmission does not use a brake pedal sensor.
Control Unit Response: Commands Park Position (PARK Position Recoverable).
CAB 524166.03 — Right Brake Pedal Sensor Circuit Voltage High
Code Caused By: CAB control unit detects that the right brake pedal sensor voltage is high.
Attention: The AutoPowr™ / IVT™ transmission uses both a brake pedal sensor and a brake pedal switch. The PowerShift (PST) transmission does not use a brake pedal sensor.
Control Unit Response: Commands PARK Position (PARK Position Recoverable).
CAB 524166.04 — Right Brake Pedal Sensor Circuit Voltage Low
Code Caused By: CAB control unit detects that the right brake pedal sensor voltage is low.
Attention: The AutoPowr™ / IVT™ transmission uses both a brake pedal sensor and a brake pedal switch. The PowerShift (PST) transmission does not use a brake pedal sensor.
Control Unit Response: Commands PARK Position (PARK Position Recoverable)
CAB 524166.08 — Right Brake Pedal Sensor Adjustment Fault
Code Caused By: CAB control unit detects that the right brake pedal sensor voltage is low while left brake pedal sensor voltage is high.
Attention: The AutoPowr™ / IVT™ transmission uses both a brake pedal sensor and a brake pedal switch. The PowerShift (PST) transmission does not use a brake pedal sensor.
Control Unit Response: Vehicle May Stop.
CAB 524166.13 — Right Brake Pedal Sensor Not Calibrated
Code Caused By: CAB control unit detects that the right brake pedal sensor is not calibrated.
Control Unit Response: Limited Function.
CAB 524169.02 — Left Brake Pedal Switch-Sensor Circuit Conflict
Code Caused By: CAB control unit detects that the left brake pedal sensor voltage is high while the left brake pedal switch is closed or the left brake pedal sensor voltage is low while the left brake pedal switch is open.
Attention: The AutoPowr™ / IVT™ transmission uses both a brake pedal sensor and a brake pedal switch. The PowerShift (PST) transmission does not use a brake pedal sensor.
Control Unit Response: Commands PARK Position (PARK Position Recoverable).
CAB 524169.03 — Left Brake Pedal Sensor Circuit Voltage High
Code Caused By: CAB control unit detects that the left brake pedal sensor voltage is high.
Attention: The AutoPowr™ / IVT™ transmission uses both a brake pedal sensor and a brake pedal switch. The PowerShift (PST) transmission does not use a brake pedal sensor.
Control Unit Response: Commands PARK Position (PARK Position Recoverable).
CAB 524169.04 — Left Brake Pedal Sensor Circuit Voltage Low
Code Caused By: CAB control unit detects that the left brake pedal sensor voltage is low.
Attention: The AutoPowr™ / IVT™ transmission uses both a brake pedal sensor and a brake pedal switch. The PowerShift (PST) transmission does not use a brake pedal sensor.
Control Unit Response: Commands PARK Position (PARK Position Recoverable).
CAB 524169.08 — Left Brake Pedal Sensor Adjustment Fault
Code Caused By: CAB control unit detects that the left brake pedal sensor voltage is low while right brake pedal sensor voltage is high.
Attention: The AutoPowr™ / IVT™ transmission uses both a brake pedal sensor and a brake pedal switch. The PowerShift (PST) transmission does not use a brake pedal sensor.
Control Unit Response: Commands PARK Position (PARK Position Recoverable).
CAB 524169.13 — Left Brake Pedal Sensor Not Calibrated
Code Caused By: CAB control unit detects that the left brake pedal sensor is not calibrated.
Control Unit Response: Limited Function.
CAB 524173.02 — Clutch Pedal Sensor Voltage Conflict
Code Caused By: CAB control unit detects that the clutch pedal sensor channel 2 voltage is not one-half of the clutch pedal sensor channel 1 voltage.
Control Unit Response: Commands PARK Position (PARK Position Recoverable).
CAB 524173.03 — Clutch Pedal Sensor Circuit Voltage High
Code Caused By: CAB control unit detects that the clutch pedal sensor voltage is high.
Control Unit Response: Commands PARK Position (PARK Position Recoverable).
CAB 524173.04 — Clutch Pedal Sensor Circuit Voltage Low
CAB control unit detects that the clutch pedal sensor voltage is low.
Control Unit Response: Commands PARK Position (PARK Position Recoverable).