LITE-CHECK INSPECTOR 920
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Display Details
“OPEN GROUND” – Ground wire is open
All panel circuit indicator lights are on and the
“OPEN GROUND” fault alarm sounds. The digital
display indicates the circuit under test, current draw,
voltage and an open ground circuit fault.
“GOOD” – Faults repaired
The circuit indicator light is on and the digital display
indicates the circuit under test, current draw, voltage
and a GOOD circuit
NOTE: If more than one fault is detected, the tester will first identify the faults based on
the hierarchy below. Once the first fault is corrected, the tester will go to the next fault
and so on.
Fault Detection Hierarchy
1. Chassis Short
2. Open Ground
3. Short
4. Open
5. Good
ABS Test Procedures
Initial Setup and Configuration
Before beginning ABS testing, be sure these steps are followed:
Trailer ABS Power Supply Requirements
Determine the trailer total running electrical load.
See TMC Recommended Practice 141 – The purpose of
the Recommended Practice is to recommend a minimum
voltage of 9.5 VDC at the ECU. If the ECU voltage is
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