Self-Levelling Suspension Sender G84 - Audi A6 242 Service Manual

Self-levelling suspension, A6
Self-levelling
suspension sender G84
The vehicle level is detected by the self-
levelling system G84 sender (level
sensor).
A contact-free angle sensor is used to
determine the spring compression
between the rear axle and the bodywork
with the aid of the connecting link
kinematics unit.
The connection of the connecting link
kinematics unit (see figures 242_044 and
242_045) is designed to largely
compensate for one-sided compression.
This connection allows self-levelling to
operate using only one level sensor.
The self-levelling system in the Audi A6
is not able to compensate for different
levels on the left and right-hand sides
(e.g. due to one-sided loads).
Pin assignment for level sensor G84
Pin
1 Earth (from J197)
2 Vacant
3 Vacant
4 Analogue signal output,
voltage signal
5 5 Volt voltage signal
(from J197)
6 Vacant
J197 Self-levelling suspension
control unit
52
The angle sensor operates according to the
Hall principle. Evaluation electronics
integrated into the sensor convert the signal
of the Hall IC into a voltage signal
proportional to the angle (see diagram).
Connection to the torsion beam axle assembly in the front
wheel drive version

Self-levelling suspension sender G84

Bracket (attached to chassis)
Connecting link
Connection for quattro drive with double-wishbone axle
Self-levelling suspension sender G84
Bracket
Sub-frame
242_044
Axle cross member
Connecting link
242_045
Anti-roll bar