Status Lights - MAC TOOLS ET9107 Manual De Instrucciones

TESTING
1. With the #ET9107 connected and engine running, increase the brake force adjustment on your instrument
panel to maximum output (usually #10).
2. Without applying pressure to the brake pedal, operate the manual brake lever on your controller and take
note of the number of LEDs that illuminate. It is recommended to maintain application for up to 20 seconds
and observe any changes.
3. Release the manual brake lever and apply moderate pressure to the brake pedal. Observe the series of
10 LEDs at the top of your tester as they sequentially illuminate. This indicates the extent of 12V power
available at the connector to actuate trailer brakes.
4. While increasing brake pressure, you should see more of the 10 LED indicators illuminate. Some vehicles or
brake controllers may limit output with brake pedal pressure, unless the vehicle is moving.
5. Release the brake pedal. If any abnormal results were noted, continue to the Circuit Fault Troubleshooting
section on page 6.
6. Test other lighting and electrical functions such as Left and Right Turn Signals, Tail/Tag, Brake Lights etc.
To avoid over heating, DO NOT hold foot on brake for more than 15-second intervals
NOTE: The Ground Integrity Light will only illuminate when a circuit is completed. In other words, if you are
only testing left or right directional circuits you may notice the Ground Integrity Light flashing in sequence with
the directional. This is normal and expected.

STATUS LIGHTS

(Yellow ECU
Detected)
(RED) Power
ECU and Power
Light
(Blue) Gain 1-10
800.MACTOOLS
Blinking
Steady
Not Illuminated
Steady
Not Illuminated
Intermittent Blink
Blinking
Illuminated
Determining if ECU is present
ECU detected, dynamic load is active
No ECU detected
Static load is available
E. Brake Circuit has power and continuity
No power or continuity detected
Indicates search signal from vehicle
This is typical and expected from vehicles with an
established ECU connection
Fault in wiring—check connections and trouble
codes
Indicates gain from truck
1.0-1.5V increments
5