Description:

This diagnostic trouble code (TCU 000161.11) is generated when the transmission input speed registered by the TCU control unit does not match the engine speed that is available at the engine control unit (ECU) via the CAN BUS. This discrepancy indicates a potential issue with the sensor for transmission input speed or a communication problem between the TCU and ECU.

Reaction:

When this error code is detected, the equipment may experience erratic transmission behavior or reduced performance. The system might enter a protective mode to prevent potential damage, resulting in limited operational capabilities.

Recommendations:

1. Check Sensor Alignment:

• Verify Sensor Installation: Ensure that the transmission input speed sensor is correctly installed and aligned.
• Adjust if Necessary: Adjust the sensor alignment if it is not properly positioned.

2. Inspect Sensor and Wiring:

• Check for Damage: Inspect the sensor and its wiring for any signs of damage, wear, or disconnection.
• Repair or Replace: Repair or replace any damaged wiring or connectors.

3. Verify CAN BUS Communication:

• Check Connections: Ensure that all CAN BUS connections between the TCU and ECU are secure and free of corrosion.
• Test Communication: Use diagnostic tools to verify that the CAN BUS communication is functioning correctly.

4. Compare Speed Signals:

• Verify Signals: Compare the transmission input speed signal with the engine speed signal to identify discrepancies.
• Calibrate if Needed: Calibrate the sensors or control units to ensure accurate speed readings.

Note:

Regular maintenance and checks of the transmission input speed sensor and CAN BUS communication system are essential for accurate performance. Ensure all components are in good working condition to maintain proper synchronization between the TCU and ECU.