TSC FAULT CODES / TSC ERROR CODES

TSC Control Unit – The TSC controls, coordinates and manages all functions required for front wheel drive axle with TLS and cab suspension (CSC). The TSC control unit controls two systems. The SFA-section controls the front wheel drive axle with TLS and the CSC-section controls the cab suspension.

John Deere TSC fault codes / John Deere TSC diagnostic trouble codes

TSC 000084.15 (TSC 84.15)— Wheel Speed Detected During Calibration (Cab Suspension or TLS)
The diagnostic trouble code is generated when the TSC control unit receives a wheel speed above 0.5 km/h (0.3 mph) via CAN BUS during calibration. The reason for this may be:
– wheel speed sensor B09/B35 (PowrQuad transmission) or transmission output speed sensor B63 (AutoPowr/IVT transmission) defective.
– incorrect wheel speed/transmission output speed received via CAN BUS.
– the tractor is not standing on a level surface during the calibration. The tractor can therefore move during the calibration (wheel speed exists).

TSC 000084.19 (TSC 84.19)— Incorrect CAN BUS Message, Wheel Speed from BCU
This diagnostic trouble code is triggered if the BCU transmits the following sensor status signals on the CAN BUS:
– Sensor not available (due to incorrect configuration of wheel speed sensor).
– Sensor signal faulty (circuit problem at wheel speed sensor).

TSC 000168.03 (TSC 168.03)— Control Unit, Supply Voltage Too High
This diagnostic trouble code is triggered if the control unit measures a supply voltage (battery) of more than 16 volts.

TSC 000168.04 (TSC 168.04)— Control Unit, Supply Voltage Too Low
This diagnostic trouble code is generated if the control unit measures a supply voltage (battery) of less than 9 volts.

TSC 000190.17 (TSC 190.17)— Incorrect CAN BUS Message, Engine Speed from ECU Too Low
This diagnostic trouble code is triggered if engine speed (CAN message) is between 100 and 500 rpm for longer than 5 seconds. This can happen if engine speed drops suddenly or if the ECU transmits an incorrect engine speed.

TSC 000190.19 (TSC 190.19)— Incorrect CAN BUS Message, Engine Speed from ECU (While Stationary)
This diagnostic trouble code is triggered if engine speed (CAN message) is between 100 and 500 rpm for longer than 5 seconds (while stationary). This can happen while the tractor is stationary if engine speed drops suddenly or if the ECU transmits an incorrect engine speed.

TSC 000190.31 (TSC 190.31)— Incorrect CAN BUS Message, Engine Speed from ECU (While in Motion)
This diagnostic trouble code is triggered if engine speed (CAN message) is between 100 and 500 rpm for longer than 5 seconds (while in motion). This can happen while the tractor is in motion if engine speed drops suddenly or if the ECU transmits an incorrect engine speed.

TSC 000597.19 (TSC 597.19)— Incorrect CAN BUS Message, Brake Pedal Signal from BCU
The diagnostic trouble code is generated when the BCU control unit transmits the following sensor status via CAN BUS:
– Sensor not available.
– Sensor signal faulty (circuit problem at brake pedal sensor unit).

TSC 000628.12 (TSC 628.12)— Control Unit Internal Fault
This diagnostic trouble code is triggered if an electronic malfunction is registered in the control unit. Control unit fails to boot. This fault may also occur when the TSC is reprogrammed.

TSC 000629.12 (TSC 629.12)— Control Unit Internal Fault
This diagnostic trouble code is triggered if an electronic malfunction is registered in the control unit. Unexpected, incorrect reset at TSC.

TSC 000639.14 (TSC 639.14)— Vehicle CAN BUS, Very High Error Rate
This diagnostic trouble code is triggered if the control unit receives too many incorrect CAN BUS messages or if it detects a general problem in the connection to the vehicle CAN BUS.

TSC 001079.03 (TSC 1079.03)— 5volt Power Supply to TLS Sensors, Voltage Too High
This diagnostic trouble code is triggered if the voltage measured at the positive lead of the power supply to the 5volt components (TLS position sensor B53 and TLS oil pressure sensor B167) is over 5.25 volts. This indicates that the circuit is shorted to a supply lead or there is an internal interruption at the TSC.

TSC 001079.04 (TSC 1079.04)— 5volt Power Supply to TLS Sensors, Voltage Too Low
This diagnostic trouble code is triggered if the voltage measured at the positive lead of the power supply to the 5volt components (TLS position sensor B53 and TLS oil pressure sensor B167) is below 4.65 volts. This indicates a short to ground in the circuit.

TSC 001080.03 (TSC 1080.03)— 5volt Power Supply to Cab Suspension Sensor, Voltage Too High
This diagnostic trouble code is triggered if the voltage measured at the positive lead of the power supply to the 5volt components (cab position sensor B110) is over 5.25 volts. This indicates that the circuit is shorted to a supply lead or there is an internal interruption at the TSC.

TSC 001080.04 (TSC 1080.04)— 5volt Power Supply to Cab Suspension Sensor, Voltage Too Low
This diagnostic trouble code is triggered if the voltage measured at the positive lead of the power supply to the 5volt components (cab position sensor B110) is below 4.65 volts. This indicates a short to ground in the circuit.

TSC 001881.19 (TSC 1881.19)— Incorrect CAN BUS Message, Draft Sensor from BCU
This diagnostic trouble code is triggered if the BCU transmits the following sensor status signals on the CAN BUS:
– Sensor not available (due to incorrect configuration of draft sensor).
– Sensor signal faulty (circuit problem at draft sensor).

TSC 002000.09 (TSC 2000.09)— Incorrect CAN BUS Message, Information from ECU
This diagnostic trouble code is generated when a data transfer problem occurs between the ECU and TSC. Reception of one of the ECU messages is intermittent or nonexistent (intermittent reception could be due to a loose wire).

TSC 002033.09 (TSC 2033.09)— Incorrect CAN BUS Message, Information from BCU
This diagnostic trouble code is generated when a data transfer problem occurs between the BCU and TSC. Reception of one of the BCU messages is intermittent or nonexistent (intermittent reception could be due to a loose wire).

TSC 002246.09 (TSC 2246.09)— Incorrect CAN BUS Message, Information from DSM
This diagnostic trouble code is generated when a data transfer problem occurs between the DSM and TSC. Reception of one of the DSM messages is intermittent or nonexistent (intermittent reception could be due to a loose wire).

TSC 003509.03 (TSC 3509.03)— 5volt Power Supply to TLS Sensors, Voltage Too High
This diagnostic trouble code is triggered if the voltage measured at the positive lead of the power supply to the 5volt components (TLS position sensor B53 and TLS oil pressure sensor B167) is over 5.25 volts. This indicates that the circuit is shorted to a supply lead or there is an internal interruption at the TSC.

TSC 003509.04 (TSC 3509.04)— 5volt Power Supply to TLS Sensors, Voltage Too Low
This diagnostic trouble code is triggered if the voltage measured at the positive lead of the power supply to the 5volt components (TLS position sensor B53 and TLS oil pressure sensor B167) is below 4.65 volts. This indicates a short to ground in the circuit.

TSC 003510.03 (TSC 3510.03)— 5volt Power Supply to Cab Suspension Sensor, Voltage Too High
This diagnostic trouble code is triggered if the voltage measured at the positive lead of the power supply to the 5volt components (cab position sensor B110) is over 5.25 volts. This indicates that the circuit is shorted to a supply lead or there is an internal interruption at the TSC.

TSC 003510.04 (TSC 3510.04)— 5volt Power Supply to Cab Suspension Sensor, Voltage Too Low
This diagnostic trouble code is triggered if the voltage measured at the positive lead of the power supply to the 5volt components (cab position sensor B110) is below 4.65 volts. This indicates a short to ground in the circuit.

TSC 522285.05 — Y43 Solenoid Valve for Raising Cab Suspension, Current Too Low
This diagnostic trouble code is triggered if the control unit measures too low a current at the signal input of the solenoid valve for raising cab suspension (Y43). This indicates that the circuit is shorted to a supply lead or is open.

TSC 522285.06 — Y43 Solenoid Valve for Raising Cab Suspension, Current Too High
This diagnostic trouble code is triggered if the control unit measures too high a current at the signal input of the solenoid valve for raising cab suspension (Y43). This indicates a short to ground in the circuit.

TSC 522286.05 — Y42 Solenoid Valve for Lowering Cab Suspension, Current Too Low
This diagnostic trouble code is triggered if the control unit measures too low a current at the signal input of the solenoid valve for lowering cab suspension (Y42). This indicates that the circuit is shorted to a supply lead or is open.

TSC 522286.06 — Y42 Solenoid Valve for Lowering Cab Suspension, Current Too High
This diagnostic trouble code is triggered if the control unit measures too high a current at the signal input of the solenoid valve for lowering cab suspension (Y42). This indicates a short to ground in the circuit.

TSC 523438.02 — Control Unit Internal Fault
This diagnostic trouble code is triggered if the control unit detects an EEPROM error (Checksum incorrect).

TSC 523652.02 — Control Unit Connected to Wrong Wiring Harness Connector
This diagnostic trouble code is triggered if the control unit detects an erroneous signal in the circuit of the control unit identification.

TSC 523847.05 — Y69 Solenoid Valve for Building Up Pressure (TLS), Current Too Low
This diagnostic trouble code is triggered if the control unit measures too low a current at the signal input of the solenoid valve for building up pressure (Y69). This indicates that the circuit is shorted to a supply lead or is open.

TSC 523847.06 — Y69 Solenoid Valve for Building Up Pressure (TLS), Current Too High
This diagnostic trouble code is triggered if the control unit measures too high a current at the signal input of the solenoid valve for building up pressure (Y69). This indicates a short to ground in the circuit.

TSC 523929.02 — Calibration (Cab Suspension), Cab Moves in Wrong Direction
This diagnostic trouble code is triggered if while calibrating the cab suspension the control unit orders the cab to move and the cab moves in the wrong direction. This indicates that plugs for the raising and lowering solenoid valves are mixed up, that cab position sensor (B110) has been installed wrongly, that the raising/lowering solenoid valve circuit is shorted to a supply lead or there is a mechanical defect at the solenoid valve for raising/lowering cab suspension (valve stuck in open or closed position).

TSC 523929.03 — Pressure Relief (Cab Suspension), Bottom Position is Not Reached
This diagnostic trouble code is triggered if during pressure relief of the cab suspension the control unit detects that the bottom position has not be reached within 60 seconds. This indicates that cab position sensor (B110) has been installed wrongly, that there is a problem at the solenoid valve for lowering the cab suspension, or that there is a problem in the hydraulic circuit of the cab suspension.

TSC 523929.13 — Cab Suspension, Fault During Calibration
This diagnostic trouble code is triggered if the TSC (cab suspension) has an invalid calibration. Reasons could be:
– Engine speed too low (between 100 and 500 rpm).
– Tractor speed detected during calibration.
– Cab suspension moves in wrong direction.
– Level (mid) position not in tolerance range (between 2 and 3 volts).+ Standard pressure in level (mid) position not achieved within 90 seconds.
– Voltage range (0.5 1.5 volts) not achieved within 90 seconds when rising.
– Voltage range (3.5 4.5 volts) not achieved within 90 seconds when lowering.
– Circuit problem with cab position sensor (B110).
– Circuit problem at solenoid valve for raising or lowering the cab suspension.
– CAN BUS fault (engine speed/wheel speed)

TSC 523929.14 — Cab Suspension, Not Calibrated
This diagnostic trouble code is triggered if the TSC (cab suspension) has not yet been calibrated.

TSC 523929.31 — Bleeding (Cab Suspension), Level Position is Not Reached
This diagnostic trouble code is triggered if during bleeding of the cab suspension the level position (more than 2.5 volts) is not reached within 300 seconds. Reasons could be:
– Bleed screws not closed.
– Cab position sensor (B110) incorrectly installed.
– A problem at the solenoid valve for raising (Y43) or lowering (Y42) the cab suspension.
– A problem in the hydraulic circuit of the cab suspension.

TSC 523948.05 — Y66 Solenoid Valve for Lowering (TLS), Current Too Low
This diagnostic trouble code is triggered if the control unit measures too low a current at the signal input of the solenoid valve for lowering TLS (Y66). This indicates that the circuit is shorted to a supply lead or is open.

TSC 523948.06 — Y66 Solenoid Valve for Lowering (TLS), Current Too High
This diagnostic trouble code is triggered if the control unit measures too high a current at the signal input of the solenoid valve for lowering TLS (Y66). This indicates a short to ground in the circuit.

TSC 523949.05 — Y67 Solenoid Valve for Raising (TLS), Current Too Low
This diagnostic trouble code is triggered if the control unit measures too low a current at the signal input of the solenoid valve for raising TLS (Y67). This indicates that the circuit is shorted to a supply lead or is open.

TSC 523949.06 — Y67 Solenoid Valve for Raising (TLS), Current Too High
This diagnostic trouble code is triggered if the control unit measures too high a current at the signal input of the solenoid valve for raising TLS (Y67). This indicates a short to ground in the circuit.

TSC 523951.02 — Calibration (TLS), Front Axle Moves in Wrong Direction
This diagnostic trouble code is triggered if during calibration or bleeding the TSC (frontwheel drive axle with TLS) perceives motion in the wrong direction. This indicates that plugs are mixed up at the solenoid valves, that there is a problem in the raising/lowering solenoid valve circuit (TLS) or pressure buildup/reduction circuit (TLS), or that there is a problem in the hydraulic circuit of the TLS frontwheel drive axle.

TSC 523951.13 — TLS FrontWheel Drive Axle, Fault During Calibration
This diagnostic trouble code is triggered if the TSC (TLS frontwheel drive axle) has an invalid calibration. Reasons could be:
– Engine speed too low (between 100 and 500 rpm).
– Tractor speed detected.+Frontwheel drive axle moves in wrong direction.
– Level (mid) position not in tolerance range (between 2 and 3 volts).
– Standard pressure in level (mid) position not achieved within 90 seconds.
– Voltage range (0.5 1.5 volts) not achieved within 90 seconds when rising.
– Voltage range (3.5 4.5 volts) not achieved within 90 seconds when lowering.
– Circuit problem at TLS position sensor (B53) or TLS oil pressure sensor (B167).
– Circuit problem at solenoid valve for raising/lowering or at solenoid valve for pressure buildup/ reduction.
– CAN BUS fault (engine speed/wheel speed).

TSC 523951.14 — TLS FrontWheel Drive Axle, Not Calibrated
This diagnostic trouble code is triggered if the TSC (TLS frontwheel drive axle) has not yet been calibrated.

TSC 523951.15 — Pressure Relief (TLS), Bottom Position is Not Reached
This diagnostic trouble code is triggered if the TLS frontwheel drive axle does not reach its bottom position within 60 seconds in the pressure relief mode. This indicates that there is a problem in the circuit of TLS position sensor (B53), that there is a problem in the circuit of TLS pressure reduction solenoid valve (Y69), or that there is a problem in the hydraulic circuit.

TSC 523964.05 — Y68 Solenoid Valve for Reducing Pressure (TLS), Current Too Low
This diagnostic trouble code is triggered if the control unit measures too low a current at the signal input of the solenoid valve for reducing TLS pressure (Y68). This indicates that the circuit is shorted to a supply lead or is open.

TSC 523964.06 — Y68 Solenoid Valve for Reducing Pressure (TLS), Current Too High
This diagnostic trouble code is triggered if the control unit measures too high a current at the signal input of the solenoid valve for reducing TLS pressure (Y68). This indicates a short to ground in the circuit.

TSC 523965.31 — Activation of Manual Mode has Failed
This diagnostic trouble code is triggered if when manual levelling of the suspended front axle is activated the TSC (TLS frontwheel drive axle) fails to achieve the necessary pressure (90 bar / 9000 kPa / 1305 psi) and the level position is not reached within 30 seconds. This indicates that there is a problem in the circuit of TLS position sensor (B53), that there is a problem in the circuit of oil pressure sensor (B167), or that there is a problem in the TLS hydraulic circuit. Excessive ballasting can also cause this diagnostic trouble code to be triggered.

TSC 523972.03 — Cab Suspension All the Way Down, Voltage Too High (During Calibration)
This diagnostic trouble code is triggered if during calibration the TSC (cab suspension) detects too high a voltage (more than 2 volts) at the signal output of cab position sensor (B110) when cab suspension is at its bottom position.

TSC 523972.04 — Cab Suspension All the Way Up, Voltage Too Low (During Calibration)
This diagnostic trouble code is triggered if during calibration the TSC (cab suspension) detects too low a voltage (less than 3 volts) at the signal output of cab position sensor (B110) when cab suspension is at its top position.

TSC 523972.13 — Cab Suspension in Level Position, Voltage Out of Range (During Calibration)
This diagnostic trouble code is triggered if at the end of calibration the TSC (cab suspension) detects a level position voltage that is out of range (i.e. not bet

TSC 523973.03 — B110 Sensor for Cab Position, Voltage Too High
This diagnostic trouble code is triggered if during operation/calibration the TSC (cab suspension) detects too high a voltage (more than 4.75 volts) at the signal output of cab position sensor (B110) when cab suspension is at its top position.

TSC 523973.04 — B110 Sensor for Cab Position, Voltage Too Low
This diagnostic trouble code is triggered if during operation/calibration the TSC (cab suspension) detects too low a voltage (less than 0.25 volts) at the signal output of cab position sensor (B110) when cab suspension is at its bottom position.

TSC 523973.31 — Cab Suspension does Not Reach Level Position in Target Time
This diagnostic trouble code is triggered if while traveling at speeds above 10 km/h (6 mph) the TSC (TLS frontwheel drive axle) fails to reach its level position within 60 seconds.

TSC 523974.02 — Pressure Changes in the Wrong Direction (During TLS Pressure Sensor Test)
This diagnostic trouble code is triggered if during the TLS oil pressure sensor check the TSC (TLS frontwheel drive axle) detects an incorrect change in pressure (a reduction in pressure instead of an increase in pressure or vice versa).

TSC 523974.03 — B167 Sensor for Oil Pressure (TLS), Voltage Too High
This diagnostic trouble code is triggered if the TSC (TLS frontwheel drive axle) detects too high a voltage (more than 4.75 volts) at the signal output of TLS oil pressure sensor (B167).

TSC 523974.04 — B167 Sensor for Oil Pressure (TLS), Voltage Too Low
This diagnostic trouble code is triggered if the TSC (TLS frontwheel drive axle) detects too low a voltage (less than 0.25 volts) at the signal output of TLS oil pressure sensor (B167).

TSC 523974.14 — Commanded Standard Pressure Could Not Be Achieved
This diagnostic trouble code is triggered if the TSC (TLS frontwheel drive axle) detects that during the TLS oil pressure sensor check the commanded standard pressure (90 bar; 9000 kPa; 1305 psi) is not achieved.

TSC 523974.16 — Commanded Minimum Pressure Could Not Be Achieved
This diagnostic trouble code is triggered if:
– During the TLS oil pressure sensor check the minimum pressure target (between 2 bar; 200 kPa; 29 psi and 5 bar; 500 kPa; 72 psi) could not be achieved.
– During TLS pressure relief the TLS frontwheel drive axle drops to its bottom position, but fails to achieve the minimum pressure target (5 bar; 500 kPa; 72 psi).

TSC 523974.18 — Commanded Maximum Pressure Could Not Be Achieved
This diagnostic trouble code is triggered if during the TLS oil pressure sensor check the suspended front axle fails to achieve the commanded maximum pressure (185 bar; 18500 kPa; 2683 psi).

TSC 523975.03 — TLS Axle All the Way Down, Voltage Too High (During Calibration)
This diagnostic trouble code is triggered if during calibration or bleeding the TSC (TLS frontwheel drive axle) detects too high a voltage (more than 1.5 volts) at the signal output of TLS position sensor (B53) when the TLS frontwheel drive axle is at its bottom position.

TSC 523975.04 — TLS Axle All the Way Up, Voltage Too Low (During Calibration)
This diagnostic trouble code is triggered if during calibration or bleeding the TSC (TLS frontwheel drive axle) detects too low a voltage (less than 3.5 volts) at the signal output of TLS position sensor (B53) when the TLS frontwheel drive axle is at its top position.

TSC 523975.13 — TLS Axle in Level Position, Voltage Out of Range (During Calibration)
This diagnostic trouble code is triggered if at the end of calibration or bleeding the TSC (TLS frontwheel drive axle) detects a level position voltage that is out of range (i.e. not between 2 and 3 volts) at TLS position sensor (B53).

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