Description:

This diagnostic trouble code, TSC 523951.13, is triggered when the TSC (TLS front-wheel drive axle) has an invalid calibration. Potential causes include:

• Engine speed too low (between 100 and 500 rpm).
• Tractor speed detected.
• Front-wheel drive axle moves in the wrong direction.
• Level (mid) position not within the tolerance range (between 2 and 3 volts).
• Standard pressure in the level (mid) position not achieved within 90 seconds.
• Voltage range (0.5 to 1.5 volts) not achieved within 90 seconds when rising.
• Voltage range (3.5 to 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).

Reaction:

When this error occurs, the TLS front-wheel drive axle calibration process fails, leading to potential misalignment and operational issues.

Recommendations:

Check Engine Speed:

• Ensure Proper Engine RPM:
  • Verify that the engine speed is outside the 100-500 rpm range during calibration.
  • Adjust or repair the engine to ensure proper RPM during calibration.

Inspect Vehicle Movement:

• Ensure Stationary Calibration:
  • Ensure the tractor is stationary during calibration to avoid wheel speed detection.
  • Repeat calibration on a flat, stable surface.

Verify Solenoid Valve Connections:

• Check for Correct Connections:
  • Ensure that the solenoid valves for raising and lowering are correctly connected.
  • Correct any mixed-up connections.

Inspect TLS Position and Pressure Sensors:

• Check Sensor Installation:
  • Verify that the TLS position sensor B53 and TLS oil pressure sensor B167 are installed correctly.
  • Reinstall or replace the sensors if necessary.

Check Voltage Ranges:

• Monitor Voltage Ranges:
  • Ensure voltage ranges meet the required specifications during calibration.
  • Investigate and address any circuit issues with the sensors or solenoid valves.

Inspect CAN BUS Communication:

• Ensure Data Integrity:
  • Verify CAN BUS communication for engine and wheel speed data.
  • Repair any identified CAN BUS issues.

Note:

Accurate calibration of the TLS front-wheel drive axle is essential for proper operation. Regular inspections and maintenance of engine speed, solenoid valves, sensors, and CAN BUS communication are necessary to prevent calibration faults.