LITE-CHECK INSPECTOR 920
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Definition of Terms
Glossary and Definition of Terms
ALARM
– Distinct sound for each fault type. Alarm will cease automatically or change
when a fault is corrected
TRACTOR
– Power unit, prime mover with self-contained power and air
TRAILER
– Depends on outside power source and air to operate light and brake
systems
VEHICLE
– Tractor, trailer, or dolly
VEHICLE CABLE
– 7-pin wiring cable connecting between vehicles
FAULT MESSAGES
– Messages that appear on the tester’s digital display along with
active circuits and alarms
Electrical Circuit Definitions
GOOD CIRCUIT
– Complete circuit with amperage load (some components may not
work)
OPEN CIRCUIT
– Incomplete circuit without an amperage load. A fault message will
appear with the circuit indicators flashing and alarm sounding
SHORT CIRCUIT
– Circuit wires are in contact, showing a combined amperage load.
The fault message will display with all the circuit indicator lights flashing and alarm
sounding.
OPEN GROUND
– The ground wire is not connected, showing an incomplete circuit. A
fault message will appear with the circuit indicators flashing and alarm sounding
CHASSIS
– Shorted circuit wire is in contact with the chassis. A fault message will
appear with the circuit indicators flashing and alarm sounding
ABS Glossary
ABS
– Anti-lock Brake System (now required on all new trailers and tractors
BLINK CODE
– An ABS indicator lamp located on the trailer can indicate current and
stored faults with a blink sequence.
1. Upon start-up, the ABS lamp will light up and turn off if the ABS has no
active faults
2. Upon start-up, the ABS lamp will light up and stay on if the ABS has active
faults
3. Faults are identified by counting the number of blinks of the ABS indicator
lamp
CONFIGURATION
– the number of sensors and modulator valves on the system
2S/1M – 2 sensors and 1 modulator valve
4S/2M – 4 sensors and 2 modulator valves
ECU
– Electronic Control Unit
1. Regulates braking according to input from the wheel sensors
2. Stores faults in memory
