Description:

This diagnostic trouble code, TSC 523974.02, is triggered when, during the TLS oil pressure sensor check, the TSC (TLS front-wheel drive axle) detects an incorrect change in pressure (a reduction in pressure instead of an increase, or vice versa).

Reaction:

When this error occurs, the TLS system may not operate correctly, leading to potential issues with pressure regulation and vehicle stability.

Recommendations:

Inspect TLS Pressure Sensor:

• Check Sensor Operation:
  • Verify the correct operation of the TLS oil pressure sensor.
  • Replace the sensor if it is faulty.

Inspect Hydraulic Circuit:

• Check for Hydraulic Issues:
  • Inspect the hydraulic circuit for any signs of incorrect pressure changes, blockages, or leaks.
  • Repair any identified issues in the hydraulic circuit.

Verify Solenoid Valve Functionality:

• Check Solenoid Valve Operation:
  • Ensure the solenoid valves responsible for pressure changes are operating correctly.
  • Replace any faulty solenoid valves.

Perform System Calibration:

• Calibrate the System:
  • Follow the manufacturer’s instructions to recalibrate the TLS system to ensure accurate pressure readings.

Note:

Accurate pressure regulation is essential for the proper function of the TLS system. Regular inspections and maintenance of the pressure sensor, hydraulic circuit, and solenoid valves are crucial to prevent operational issues.