STEMCO Aeris Inflation System Troubleshooting - Manual (Page 12)

Aeris System Troubleshooting
Sept 2013
Page 12 of 18
Continued from Page 11
Condition: Driver Warning Lamp does not come on at all & Circuit board light is off
No
No
If test light did not
flash three times a bad
circuit board is
indicated
(See note 1 on Page 18
before replacing
control box)
Connect test light to the
circuit board brown & white
wires. Is test light bright?
Yes
Remove white & yellow
wires from circuit board.
Connect test light to the
circuit board light terminal
and reconnect ground. Did
test light flash 3 times?
Connect Test light to the
brown wire and chassis
ground. Does test light
illuminate?
Yes
Complete Power
on Test again,
circuit board is
operating properly
No
Yes
System ground is bad.
Restore ground on
white wire.
Verify repairs
by completing
Power on Test
System power is bad.
Restore power on
brown wire.
Verify repairs
by completing
Power on Test