ISOCHECK
« backCheck signal from truck, trailer, Susie lead and ABS system.
*All 5 green LED lamps indicate a good signal from the truck
* All 5 green LED lamps indicate a
healthy Susie lead.
* All 5 green LED lamps illuminated suggest the trailer system is good.
* All 5 green LED lamps should be
illuminated to indicate ABS system is good
