relay AUDI A6 ALLROAD 1999 C5 / 2.G Pneumatic Suspension System

20
System components
p
Pneumatic diagram
1 Additional noise damper
2 Non-return valve 1
3 Air dryer
4 Non-return valve 3
5 Non-return valve 2
6 Discharge throttle
7 Pneumatic discharge valve
8 Compressor V66
9 Electric discharge valve N111
10 Pressure sensor G291
243_030
1234
6
5
79
10
1112131415
16
17181920
11 Valve for pressure accumulator N311
12 Valve for FL suspension strut N148
13 Valve for FR suspension strut N149
14 Valve for RL suspension strut N150
15 Valve for RR suspension strut N151
16 Pressure accumulator
17 Front left air spring
18 Front right air spring
19 Rear left air spring
20 Rear right air spring
from the compressor
relay from control unit
to the
control unit from the
control unit
8

33
Key to function diagram
E281 Self-levelling suspension operating
unit
F216 Contact switch for switchable rear fog
light
G76 Self levelling suspension sender, RL
G77 Self levelling suspension sender, RR
G78 Self levelling sender, FL
G289 Self levelling suspension sender, FR
G290 Compressor temperature, self-
levelling suspension sender
G291 Self-levelling suspension pressure
sender
J197 Self-levelling suspension control unit
J403 Relay for self-levelling suspension
compressor
J429 Control unit for central locking
J431 Control unit for headlamp range
control
N111 Discharge valve for self-levelling
suspension
N148 Valve for FL suspension strut
N149 Valve for FR suspension strut
N150 Valve for RL suspension strut
N151 Valve for RR suspension strut
N311 Valve for self-levelling suspension
pressure accumulator
K134 Self-levelling suspension warning
lamp
V48 Left headlamp range control motor
V49 Right headlamp range control motor
V66 Self-levelling suspension compressor
motor= Input signal
= Output signal
= Positive
= Earth
= Bi-directional
= CAN bus/signal wire
Auxiliary signals:
CAN low
CAN high
Door contact signal
Diagnostic connector for K wire
Vehicle locked signal
Trailer operation signal (F126)
Terminal 50 signal
Driving speed signal
Terminal 56
Diagnostic connector for K wire
to the instrument cluster
Driving speed signal from ABS control unit,
speed sensor output, rear left
1
2
3
4
5
6
7
8
I
II
III
IV
Terminal 58s
Terminal 58d
ESP button
ESP button
A
B
C
DHeadlamp range control signal
9
Power supply J431
10