Description:

This diagnostic trouble code, TSC 523929.13, is triggered when the cab suspension calibration is invalid. Potential causes include:

• Engine speed too low (between 100 and 500 rpm).
• Tractor speed detected during calibration.
• Cab suspension 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 with the cab position sensor (B110).
• Circuit problem at the solenoid valve for raising or lowering the cab suspension.
• CAN BUS fault (engine speed/wheel speed).

Reaction:

When this error occurs, the cab suspension 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 Cab Position Sensor:

• Check Sensor Installation:
  • Verify that the cab position sensor B110 is installed correctly.
  • Reinstall the sensor 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 cab position sensor 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 cab suspension system is essential for proper operation. Regular inspections and maintenance of engine speed, solenoid valves, and CAN BUS communication are necessary to prevent calibration faults.