Adaptive Air Suspension - Audi A8 2019 Service Training

Adaptive air suspension

The system configuration basically corresponds to those of
the Q7 and Q5 models. As in the predecessor A8 model,
suspension struts are used on the rear axle instead of
separate spring and damper layouts. Drivetrain Control
Module J775 is also used for this suspension.
Suspension strut with damper and
Right Front Damping Adjustment
Valve N337
Right Front Level Control System
Sensor
G289
42
Drivetrain Control Module J775
incorporates the control software for
air suspension and damping as well as
sensors for measuring vehicle dynamics
Left Front Level Control System
Sensor
G78
Suspension strut with damper and
Left Front Damping Adjustment Valve
N336
In addition to the control software for the air suspension
and damping systems, the control module houses sensors
for measuring vertical acceleration as well as pitch and roll
(torque about the longitudinal and transverse axes of the
vehicle). This eliminates the need for the body acceleration
sensors required by earlier systems. The control software
receives the measurement data on yaw rate (torque about
the vertical axis of the vehicle) and transverse acceleration
from the Airbag Control Module J234 via the FlexRay bus.
Suspension strut with damper and
Left Rear Damping
Adjustment Valve
N338
Left Rear Level Control System
Sensor
G76
Air supply system with
Level Control System
Compressor Motor V66
and solenoid valve block
Pressure
accumulator
Suspension strut with damper
and Right Rear Damping
Adjustment Valve
N339
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