Forum Discussion
Old-Biscuit
Feb 14, 2016Explorer III
GaryWT wrote:Old-Biscuit wrote:GaryWT wrote:
Have never done it and have never thought of doing it.
Hopefully this thread has made you aware of why it should be tested.
I know my brakes work so pulling the e brake cable will not prove anything as far as I can see.
It will PROVE that the Emergency Brake System works.
When connected to tow vehicle trailer brakes are actuated via tow vehicle brake controller which modulates the voltage sent to activate the trailer brakes.
IF trailer should become disconnected the Emergency Brake System engages the trailer brakes using the trailer battery and applies FULL battery voltage provided the switch works and trailer battery is properly charged (Fed Law requires it to supply full voltage to brakes for at least 15 minutes)
So YES pulling the pin will prove something......that your trailer emergency brake system is fully functioning.
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