STEMCO Aeris Inflation System Troubleshooting - Manual (Page 13)

Aeris System Troubleshooting
Sept 2013
Page 13 of 18
Condition: Driver Warning Lamp comes on but does not flash three times and does not go off
Possible cause: Driver Warning Lamp has constant power
Before starting this section
Verify the wires are attached to control unit circuit board as shown in figure 3 on page 18
(Note: Incorrect attachment of wires may cause circuit board damage)
Connect test light to the
circuit board yellow & white
wires. Is test light on?
Yes
No
If test light illuminates and
did not flash a bad circuit
board is indicated
(See note 1 on Page 18
before replacing control box)
Remove yellow wire from
circuit board. Did Driver
Warning Lamp go off?
Yes
No
Connect test light to top
terminal on circuit board.
Yellow Driver
Warning Lamp wire
is shorted to power.
Find short & repair
Verify repairs
by completing
Power on Test
Driver Warning Lamp is
not correctly wire at the
nose of the trailer.
Correct wiring
Verify repairs
by completing
Power on Test