RESETTING THE STEERING ANGLE SENSOR AFTER AN ALIGNMENT

Summary

This video discusses the alignment process of a vehicle, focusing on the critical steps involved in resetting the steering angle sensor after adjustments like toe changes. The importance of this reset is explained, as it ensures the proper functioning of electronic systems such as EPS, stability control, and ADAS. The process is demonstrated step-by-step, highlighting the vehicle-specific nature of the procedure. The technician confirms that resetting the steering angle sensor is necessary for accurate performance and safety, providing a report that verifies the reset for both the technician's and the customer's peace of mind.

Takeaways

• 😀 The vehicle's alignment is confirmed to be correct with the tow, camber, caster, and thrust angle all in the green.
• 😀 Resetting the steering angle sensor is mandatory after adjustments like rear or front toe changes.
• 😀 The reset process is vehicle-specific and requires following step-by-step instructions based on the database.
• 😀 Electronic Stability Control (ESC), ADAS functions, and EPS systems are all affected by the steering angle sensor.
• 😀 Even small changes in toe can alter the output of the steering angle sensor, requiring a reset.
• 😀 The scan tool should be connected and the ignition turned to the run position to begin the sensor reset process.
• 😀 The steering wheel needs to be straightened out during the reset process to ensure accuracy.
• 😀 A real-time output of the steering angle sensor is displayed during the reset process for verification.
• 😀 After resetting the sensor, the ignition must be turned off, then on again after a 5-second wait.
• 😀 The system allows printing a report that confirms the successful reset and provides valuable information to the customer.

Q & A

What alignment parameters are checked before rolling the vehicle out of the bay?

Before rolling the vehicle out of the bay, the tow, camber, caster, and thrust angle are all checked and confirmed to be within the green zone, indicating proper alignment.

Why is it necessary to reset the steering angle sensor after an alignment?

Resetting the steering angle sensor is necessary because adjustments to the vehicle's alignment, such as the tow, affect the sensor's output. This reset ensures proper function of systems like EPS, electronic stability control, and ADAS.

What vehicle-specific functions require the steering angle sensor reset?

Functions like electronic power steering (EPS), electronic stability control (ESC), and Advanced Driver Assistance Systems (ADAS) require the steering angle sensor to be reset to ensure proper functionality.

How does the database assist in resetting the steering angle sensor?

The database provides vehicle-specific information, offering a step-by-step process for resetting the steering angle sensor. This process may vary from vehicle to vehicle.

Do I need to reset the steering angle sensor if I made a small adjustment to the toe?

Yes, even a small adjustment to the toe can change the output of the steering angle sensor, so it is important to reset it to ensure proper vehicle operation.

What is the purpose of the steering angle sensor in this process?

The steering angle sensor measures the angle of the steering wheel, which is essential for systems like EPS and stability control to function correctly, ensuring vehicle safety and handling.

How do you reset the steering angle sensor during this process?

To reset the steering angle sensor, the ignition is turned to the run position, the steering wheel is straightened, and the scan tool is used to reset the sensor. After a series of steps, the sensor is reset, and the ignition is cycled off and on.

What steps are involved in resetting the steering angle sensor after the vehicle is aligned?

After the vehicle is aligned, the key is turned to the run position, the steering wheel is straightened, and the scan tool is used to check the sensor's output. Following a series of steps, the sensor is reset, and the ignition is turned off for five seconds before being turned back on.

What is the significance of printing the report after resetting the steering angle sensor?

Printing the report provides documentation that the steering angle sensor has been reset correctly, including the 'before' and 'after' values, which is important for customer transparency and liability purposes.

Why is it important to reset the steering angle sensor for safety systems like ADAS?

Resetting the steering angle sensor is crucial for the correct operation of safety systems like ADAS. If the sensor is not reset, these systems may not function properly, which could compromise vehicle safety.