TIA 523961.12 – Park Lock, Malfunction (Ground Speed Detected with Park Lock Engaged)

TIA 523961.12 (TIA )

Code: 523961.12

Shortcode:

Description:

This diagnostic trouble code (DTC) is generated if the TIA control software detects a ground speed of more than 0.1 km/h (0.06 mph) for longer than 0.7 seconds after engaging the park lock. This indicates a malfunction where the park lock is supposed to be engaged but the vehicle is still moving.

Reaction:

Limited or no function of the park lock, potentially affecting vehicle safety and maneuverability.

Recommendations:

Inspect Park Lock Mechanism:

  • Check the park lock mechanism for any mechanical faults or obstructions that may prevent it from engaging or holding.
  • Ensure that the park lock actuator is functioning correctly and replace it if necessary.

Verify Ground Speed Sensor:

  • Inspect the ground speed sensor to ensure it is providing accurate readings.
  • Replace the sensor if it is faulty or providing incorrect signals.

Check for Mechanical Issues:

  • Ensure that there are no mechanical issues such as wheel slip or loose components that could cause the vehicle to move despite the park lock being engaged.

Inspect Wiring and Connections:

  • Check the wiring and connectors associated with the park lock system for damage or disconnections.
  • Repair or replace any damaged wiring or connectors.

Update Control Software:

  • Ensure that the control software is up-to-date with the latest version from the manufacturer.

Consult Technical Support:

  • If the issue persists, consult technical support for further diagnostic procedures or potential hardware issues.

Note:

Regular maintenance and checks of the park lock mechanism and ground speed sensors can prevent issues related to park lock engagement and ground speed detection. Ensuring all components are functioning correctly is crucial for reliable operation.


Control Units: John Deere