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© 200438 3-1 System inspection with DAVIE XD ECAS-2 DAVIE XD diagnostics manual 8 3. SYSTEM INSPECTION WITH DAVIE XD 3.1 CALIBRATING THE SENSORS The sensors must be calibrated if the height and/ or pressure sensors of the ECAS unit are replaced. Note: Calibration should be carried out with due care to avoid physical injury and material damage. Additionally, the trailing or leading rear axle may be lowered automatically during these operations. When the unit is programmed, the standard maximum chassis height of the rear axle and subsequently the desired maximum chassis height of the front axle are calibrated. Explanation Place the gauges between the driven axle and the chassis. 2. Lower the chassis using DAVIE XD until it rests on the gauges. Note: - On the front axle the vertical rod is adjustable. The height setting of this vertical rod must be such that lever (1) is horizontal when the driving height is approx. 80 mm. - On high-volume vehicles the vertical rod on the rear axle is adjustable. The height setting of this vertical rod must be such that lever (1) is horizontal when the driving height is approx. 60 mm. - When the height sensors have been calibrated, the pressure sensor is subsequently calibrated automatically. All the air is exhausted from the bellows. 3. Now bring the chassis to the desired maximum height at the front axle. Note: - The maximum height of the chassis is limited by the mechanical stop of the shock absorber. - The highest level of standard sensor sensitivity setting must be a minimum of 20 mm above the normal driving level; otherwise an error will occur in the height sensor values. A. Calibrating the sensors on replacing the ECAS unit |