Troubleshooting
Symptom: Trailer brakes lock up
Possible Cause: Maximum power set too high
Remedy: Reduce maximum power setting
Possible Cause: Minimum power set too high
Remedy:Reduce Boost setting
Symptom: Low output to trailer brakes
Possible Cause: Maximum power set too low
Remedy: Increase maximum power setting
Possible Cause: Minimum power set too low
Remedy: Increase Boost setting
Symptom: Weak/Ineffective Brakes
Possible Cause: Overloaded trailer
Remedy: Check weight rating
Possible Cause: Loose or poor quality connections
Remedy: Inspect connections/check with meter
Possible Cause: Insufficient wire gauge
Remedy: Inspect/replace
Symptom: No output to trailer brakes (manual or
automatic)
Possible Cause: Improper Wiring
Possible Cause: Improperly grounded
Remedy: Ensure that the following are grounded:
controller (white wire); tow vehicle connector; trailer
umbilical cord; each brake magnet
Symptom: No output to trailer brakes (automatic only)
Possible Cause: Faulty Brake Light Circuit on tow vehicle
Remedy: Troubleshoot/repair brake light circuit
Symptom: Intermittent or surging brakes
Possible Cause: Improperly grounded
Remedy: Check and repair all ground connections
Possible Cause: Out of round brake drums
Remedy: Repair/replace
Possible Cause: Worn wheel bearings
Remedy: Repair/replace
Symptom: No output to trailer brakes; Output Short Warning
displayed when brakes applied
Possible Cause: Direct short to ground either in tow
vehicle wiring or in trailer wiring
Remedy: Inspect and repair wiring
Possible Cause: Faulty brake magnets
Remedy: Test/replace brake magnets
Symptom: Reduced output to trailer brakes; Overload
Warning displayed when brakes applied
Possible Cause: Too many brake magnets are attached
to controller
Remedy: Controller only handles 1-4 axles with brakes
Possible Cause: Intermittent short to ground in tow
vehicle or trailer wiring
Remedy: Inspect and repair wiring
Possible Cause: Defective brake magnets
Remedy: Test/replace brake magnets
Symptom: Trailer brakes lock up when trailer connector cable
is attached
Possible Cause: Faulty breakaway switch
Remedy: Test/replace switch
Symptom: Blue Wire Fault Warning displayed
Possible Cause: Indicates presence of an unexpected
12 Volts on the blue (output) wire due to one of the
following: faulty wiring; malfunctioning or disconnected
breakaway switch
Remedy: Inspect wiring and breakaway switch. Ensure that
there is no voltage on the blue wire when the brake pedal is
not depressed.
Symptom: No Trailer Warning displayed
Possible Cause: No trailer connected
Remedy: Push any button to clear display or connect trailer
Possible Cause: Trailer with Electric over Hydraulic actuator
attached
Remedy: Change Brake Type from Electric to Hydraulic
(refer to Screen Menu)
Possible Cause: Blue controller wire not connected to
correct wire
Remedy: Inspect and repair wiring
OUTPUT SHORT
No Brakes
WARNING
NO TRAILER
WARNING
OVERLOAD
Excessive Amps
WARNING
BLUE WIRE FAULT
Voltage Present
WARNING
INTENSITY
High
Medium
Low
COLOR
White
Blue
Green
Yellow
Pink
WARNING
TROUBLE
SHOOTING
BRAKE TYPE
CONFIRM
SCREEN MENU
2-20-09
ENTER, UP, DOWN
ENTER, UP or DOWN
ENTER
ENTER
ENTER
Selecting Accept goes
to SETUP screen
Cancel goes back to
BRAKE TYPE.
Selecting either setting
results in that selection
and the screen returns to
the SETUP screen.
Selecting any setting
results in that setting
and the screen returns
to the SETUP screen.
Pressing ENTER returns
to the DIAGNOSTICS
screen.
Pressing any key returns
to the main screen.
Pressing ENTER goes
back to TROUBLE
SHOOTING Screen.
Pressing ENTER goes
back to TROUBLE
SHOOTING Screen.
Selecting any setting
results in that setting
and the screen returns
to the DISPLAY screen.
Selecting any setting
results in that setting
and the screen returns
to the DISPLAY screen.
Selecting any setting
results in that setting
and the screen returns
to the DISPLAY screen.
Pressing ENTER goes
back to TROUBLE
SHOOTING Screen.
Pressing ENTER goes
back to TROUBLE
SHOOTING Screen.
UP and DOWN scroll
through selections.
ENTER selects the
highlighted selection.
Exit selection returns to
the MAIN SCREEN.
UP or DOWN
Selecting UP or DOWN increases or
decreases the maximum output power,
respectively. Pausing on the number
for 5 seconds or pressing ENTER
causes the displayed value to be saved
as the new maximum output power.
Hitting any button here transitions
to the SETUP screen. It returns
back to this screen after 30 seconds
of inactivity.
MAIN
SCREEN
- OR -
CONTRAST
High
Medium
Low
OUTPUT
CURRENT
5.3A
OUTPUT
VOLTAGE
15.2V
BATTERY
VOLTAGE
15.2V
VERSION
0.5
SPOTLIGHT
VOLTAGE
OFF
Battery Volt.
Stoplight Volt.
Output Volt.
Output Amp.
Exit
Accept
Cancel
DISPLAY
Color
Intensity
Contrast
Exit
BOOST MODE
B0-OFF
B1 - 5%
B2 - 10%
B3 - 15%
B4 - 20%
DIAGNOSTICS
Trouble Shoot
Contact Us
Version
Exit
ALARM MODE
Alert OFF
Alert ON
BRAKE TYPE
Electric
Hydraulic
SETUP
Brake Type
Boost Mode
Alarm Mode
Diagnostics
Display
Exit
The warning screens are displayed when the relevant condition occurs. The screens are displayed until the
situation clears or a button is pressed. When a button is pressed, the screen transitions to the SETUP
screen and will remain there for a 30-second period if no other selections are made and then returns back
to the warning screen.
ELECTRIC
50%
E
50%
OUTPUT ADJUST
NO TRAILER
WARNING
B2
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