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my roommate's 2001 BMW X5's air suspension is not working right, best i can tell, it's the relay next to the compressor, i can't seem to find a schematic to it anywhere...
there are 0 volts to all 4 wires with key off
with key on, (engine off) the red/yellow wire has 12v, the other 3 show 0 volts,
red white looks like it runs to the compressor motor, the other two both show a ground
if i turn the key on, and jump the red yellow, to red white, the compressor kicks on
all fuses relating to air suspension a) have 12v at key on, and b) are good
there are 0 volts to all 4 wires with key off
with key on, (engine off) the red/yellow wire has 12v, the other 3 show 0 volts,
red white looks like it runs to the compressor motor, the other two both show a ground
if i turn the key on, and jump the red yellow, to red white, the compressor kicks on
all fuses relating to air suspension a) have 12v at key on, and b) are good
