U0107: Lost communication with throttle actuator control (TAC) module

U0107: Lost Communication with Throttle Actuator Control Module (TAC)

Introduction

The DTC U0107 trouble code is a problem that can occur in several modern vehicles equipped with electronic control systems. This code indicates a loss of communication between the engine control unit (ECU) and the throttle actuator control module (TAC). Proper communication management between these components is essential for optimal performance and safe driving. In this article, we will look at the symptoms, causes, diagnosis, and possible solutions to address the problem associated with the DTC U0107 code.

Symptoms

When the U0107 code occurs, drivers may notice several symptoms, including:

  • Engine Malfunction Indicator Light (MIL) Illuminated
  • Engine power reduction
  • Erratic throttle behavior
  • Sudden engine shutdown
  • Difficulty starting
  • Error messages on the dashboard

These symptoms can vary depending on the vehicle and the severity of the problem, but it is important to pay attention to them to avoid further damage.

Cause

The causes of the DTC code U0107 can be many and include:

  • Damaged cables or connectors :
    Faulty wiring or corrupted connectors can interrupt communication between the ECU and the TAC.

  • Engine control unit (ECU) malfunction :
    If the ECU has an internal fault, it may not communicate properly with the throttle actuator.

  • TAC module failure :
    A direct malfunction of the throttle control module can prevent communication with the ECU.

  • Power problems :
    Inadequate or unstable power supplies can interfere with the operation of electronic modules.

  • Electrical interference :
    Other electronic components in the vehicle may cause interference, leading to malfunctions.

Diagnosis

Diagnosing the U0107 code requires a systematic approach. Here is a list of recommended steps:

  1. DTC Code Scan :
    Use an OBD-II scanner to read the fault codes and identify any related codes, such as U0100 (Lost Communication with ECU), U0101, or U0102.

  2. Checking cables and connectors :
    Visually inspect the wires and connectors connecting the ECU and the TAC module for any signs of wear, corrosion, or damage.

  3. Power Control :
    Measure voltage and continuity to ensure the TAC module is receiving the necessary power.

  4. TAC Module Test :
    Use a module tester to check if the throttle control module is working properly.

  5. Real-time data analysis :
    During a test drive, monitor real-time parameters to identify any anomalies in accelerator behavior.

Resolution and Repair

Once the cause of the U0107 code has been identified, several repair actions can be taken:

  • Replacing damaged cables or connectors :
    Repair or replace faulty components to restore communication.

  • Replacing the engine control unit :
    If the ECU is found to be faulty, it will need to be replaced and reprogrammed.

  • Replacing the TAC module :
    In case the throttle control module is damaged, replacement of the module is necessary.

  • Fixing Power Issues :
    Make sure there is adequate and stable power to the electronic modules.

  • Restore configuration :
    After repairs, clear the fault codes and test drive the vehicle to see if the problem has been resolved.

Insight: Components Involved in Failure

For a deeper understanding of the DTC U0107 code, it is helpful to examine the mechanical and electrical components involved in the failure.

  • Engine Control Unit (ECU) :
    This unit manages all engine functions and communicates with various modules to ensure optimum performance. A malfunction of the ECU can adversely affect communication with the TAC.

  • Accelerator Actuator Control (TAC) Module :
    This module adjusts the throttle position based on inputs from the ECU. A fault in this component will prevent proper throttle response.

  • Electrical Wiring :
    The wiring system is crucial for communication between the various modules. Damaged wires or loose connectors can interrupt the signal and cause the U0107 code.

Conclusions

The DTC U0107 error code presents a significant challenge to auto repairers, as it can result from various communication problems between the engine control unit and the throttle actuator control module. It is essential to follow a systematic diagnostic approach and identify the specific cause to resolve the problem effectively. With proper diagnosis and repair, you can restore the vehicle's performance and ensure safe driving. Always remember to monitor related DTC codes and perform regular checks to prevent future failures.

Important
Not all OBD2 codes used by one manufacturer are used by other brands, and may not have the same meaning.
The information presented here is for informational purposes only. We are not responsible for any actions you take on your vehicle. If you have any concerns about repairing your vehicle, please contact your repair shop.