5/10/99 SMA0001A.PDF 1-30
From Leveling Controller (Closest to Compressor)
Wire Color Function At Rest In Action
1 Yellow 14g Send power to Compressor to
operate and to Diode pack which
opens Right and Left Air Bag
Valves
Continuity to
ground
12 Volts positive
2 Brown Opens The Vent Valve and
sends power to Diode pack
which opens Right and Left Air
Bag Valves
Continuity to
ground
12 Volts positive
3 Orange Detects air pressure in the bags
from 0-25 PSI
0-25 PSI
continuity to
ground
Above 25 PSI no
continuity to
ground
4 Brown/Yellow Detects air pressure in the bags
from 0-40 PSI
0-40 PSI no
continuity to
ground
40 PSI and
higher, continuity
to ground
To Air Valve Assembly
Wire Color Function At Rest In Action
1 Yellow/Black Opens the Right and Left Air
Bag Valve to fill the bags and to
empty the bags
Continuity to
ground
12 Volts positive
to fill air bags
and to drain bags
2 Brown Opens the Vent Valve to drain
the bags
Continuity to
ground
12 Volts positive
to drain air bags
3 Orange Detects air pressure in the bags
from 0-25 PSI
0-25 PSI
continuity to
ground
Above 25 PSI no
continuity to
ground
4 Brown/Yellow Detects air pressure in the bags
from 0-40 PSI
0-40 PSI no
continuity to
ground
40 PSI and
higher, continuity
to ground
