The Lite-Check, 137 Truck and Trailer Output Tester is the simple to use tool that provides technicians with accurate output readings for commercial trucks, trailers, and dollies. Simply attach the included 7-way cable and gladhands to the output receptacle of the vehicle and technicians are presented with accurate air and electrical readings via the LCD 4.75” X 1.75” screen.
Electrical Output Testing
Since the 137 Truck and Trailer Output Tester is powered by the vehicle it’s plugged into, it has an initial automatic pass/fail electrical test. If the tester fails to power on, the tractor, trailer, or dolly does not have sufficient electrical voltage to power the tester or a trailer ABS ECU.
While attached, and with sufficient electrical voltage, the tester provides up to 15 amperes of load to the incoming system simulating the lighting system of a trailer. This provides easy testing for weak or malfunctioning breakers in the vehicle. Additionally, the tester triggers the in-cab ABS lamp just as a faulty ABS ECU would. This provides an immediate test of the operability of the lamp without the need for a trailer. Accurate amperage and voltage output is displayed on the LCD display and technicians can use this data to identify possible electrical loss when connecting multiple trailers and dollies.