Category: L322 EAS System

Fault interpretation: When a fault is detected, the ECU will attempt to maintain a comfortable ride quality with restricted functionality of theair suspension system. The system functionality depends on the severity of the fault. The faults are defined as minor or major faults.Minor faults are:      Most sensor faults (hardware faults and plausibility faults)      Cross link…

   Fault Detection:The air suspension ECU performs fault detection and plausibility checks. Fault detection is limited to faults that the  ECU can directly measure, as follows: Sensor hardware faults Valve hardware faults Sensor and actuator supply faults Bus failures ECU hardware errors. Plausibility checks are checks on signal behaviour are as follows: Average height does not change correctly Height changes too slowly Suspension…

EAS Height Sensors:Under normal operating conditions, the air suspension ECU keeps the vehicle level at the ‘current’ ride height. Theincoming height signals from the sensors are passed through filters to remove irregular signals produced by roadnoise or other irregularities. When the vehicle is stationary or a height change is in progress, the signals are passedthrough…

  The independent front suspension offers a reduction of un-sprung mass over the conventional beam axle design. Thesuspension geometry features negative ground level off-set for improved control under braking. The suspension armshave been designed for maximum ground clearance. Suspension geometry can be adjusted via the strut top mountfor camber and on the steering rack track…

General:The main function of the four corner air suspension system is to maintain the vehicle at the correct ride height,irrespective of load. Additionally, the system allows the driver to request ride height changes to improve off-roadperformance or ease of access or loading. The system automatically adjusts the ride height to improve the vehiclehandling and dynamics…