Automatic transmission calibration
Calibration is the process of tuning and adjusting an automatic shift transmission. It includes setting the gear shift parameters, torque converter lock-up, and adjusting the pressure in the hydraulic system.
Calibration goals:
*Transmission performance optimization
* Improved gear shift smoothness
* Reduced switching time
* Increased fuel efficiency
* Diagnosis and elimination of transmission problems
Calibration Types:
* Static calibration: Performed with the vehicle stationary to adjust the gear shift points.
* Dynamic Calibration: Performed while the vehicle is moving to adjust oil pressure and torque converter lock-up settings.
* Adaptive Calibration: Automatically performed by the vehicle over time as the transmission learns the driver’s driving behavior.
Calibration methods:
* Diagnostic tool: Connects to the vehicle’s on-board computer and allows the technician to adjust transmission parameters.
* Specialized software: Used in workshops to tune and reprogram transmissions.
* Factory settings: The vehicle manufacturer provides calibration data for workshop use.
When calibration is required:
*After installing or repairing the gearbox
* If you have problems with gear shifting
*To improve transmission performance
*After changing driving style (for example, when switching from aggressive to economical)
Note: Transmission calibration should only be performed by a qualified mechanic. Incorrect calibration may damage the transmission.