General Electrical/Electronic System Diagnosis


 * 1) Check voltages and voltage drops in electrical/electronic circuits; interpret readings and determine needed repairs.
 * 2) Check current flow in electrical/electronic circuits and components; interpret readings and determine needed repairs.
 * 3) Check continuity and resistances in electrical/electronic circuits and components; interpret readings and determine needed repairs.
 * 4) Check electronic circuit waveforms; interpret readings and determine needed repairs.
 * 5) Use scan-tool data and/or diagnostic trouble codes (DTCs) to diagnose electronic systems; interpret readings and determine necessary action.
 * 6) Find shorts, grounds, opens, and resistance problems in electrical/ electronic circuits; determine needed repairs.
 * 7) Measure and diagnose the cause(s) of abnormal key-off battery drain (parasitic draw); determine needed repairs.
 * 8) Inspect, test, and replace fusible links, circuit breakers, fuses, diodes, and current limiting devices.
 * 9) Read and interpret electrical schematic diagrams and symbols.
 * 10) Research applicable vehicle and service information, such as vehicle service history, sevice precautions, technical service bulletins, and service campaigns/recalls.
 * 11) Diagnose failures in the data bus communications network; determine needed repairs.
 * 12) Remove and replace control modules; program as needed.