ESC hydraulic control system 4.3-22 Calibration of lateral acceleration and longitudinal acceleration sensors 1 - Protection Place protective pads at following locations: • Front fender; • Front bumper; • Driver’s seat; • Carpet (on driver's side); • Steering wheel; • Parking brake lever; • Shift lever. 2 - Operations CAUTION • It is necessary to calibrate the lateral acceleration and longitudinal acceleration sensors after the ESC hydraulic control unit is replaced. • It is necessary correctly refit the ESC hydraulic control unit and calibrate the lateral acceleration and longitudinal acceleration sensors if the ESC hydraulic control unit has been removed or replaced.
If the installation location is not correct, the sensor cannot be successfully calibrated. In order to avoid large calibration error of the lateral acceleration sensor caused by the left and right tilt of the vehicle, large calibration error of the longitudinal acceleration sensor caused by the front and rear pitch of the vehicle, it is recommended to complete the calibration on the four-wheel alignment bench. • Do not step on the brake pedal during the calibration of the sensors to prevent the calibration error of the pressure sensor from being above the standard value. • Connect the special scan tool to diagnostic System identification interface.
Read trouble code • Turn the ignition switch or start-stop button to Clear trouble code the “ON” position. Parameter measurement • Enter the “Diagnostic Function Interface” of After-sales information writing the scan tool to select the E70 model. Lateral acceleration and longitudinal • Select the “Electronic Stability Control acceleration sensors (ESC)” menu to proceed to the next step. • Click “Lateral Acceleration and Longitudinal Acceleration Sensors” in the “Electronic Stability Control (ESC)” menu. • Calibration of lateral acceleration and longitudinal acceleration sensors is completed if the “Calibration Succeed” is displayed.