Electrical/Electronic Systems

For every task in Electrical/Electronic Systems, the following safety requirement must be strictly enforced:

Comply with personal and environmental safety practices associated with clothing; eye protection; hand tools; power equipment; proper ventilation; and the handling, storage, and disposal of chemicals/materials in accordance with local, state, and federal safety and environmental regulations.

NATEF Tasks	Description	Priority designation
A	General Electrical System Diagnosis
VI.A.1	Identify and interpret electrical/electronic system concern; determine necessary action.	P-1
VI.A.2	Research applicable vehicle and service information, such as electrical/electronic system operation, vehicle service history, service precautions, and technical service bulletins.	P-1
VI.A.3	Locate and interpret vehicle and major component identification numbers (VIN, vehicle certification labels, and calibration decals).	P-1
VI.A.4	Diagnose electrical/electronic integrity for series, parallel and series-parallel circuits using principles of electricity (Ohm's Law).	P-1
VI.A.5	Use wiring diagrams during diagnosis of electrical circuit problems.	P-1
VI.A.6	Demonstrate the proper use of a digital multimeter (DMM) during diagnosis of electrical circuit problems.	P-1
VI.A.7	Check electrical circuits with a test light; determine necessary action.	P-2
VI.A.8	Measure source voltage and perform voltage drop tests in electrical/electronic circuits using a voltmeter; determine necessary action.	P-1
VI.A.9	Measure current flow in electrical/electronic circuits and components using an ammeter; determine necessary action.	P-1
VI.A.10	Check continuity and measure resistance in electrical/electronic circuits and components using an ohmmeter, determine necessary action.	P-1
VI.A.11	Check electrical circuits using jumper wires; determine necessary action.	P-2
VI.A.12	Locate shorts, grounds, opens, and resistance problems in electrical/electronic circuits; determine necessary action.	P-1
VI.A.13	Measure and diagnose the cause(s) of excessive key-off battery drain (parasitic draw); determine necessary action.	P-1
VI.A.14	Inspect and test fusible links, circuit breakers, and fuses; determine necessary action.	P-1
VI.A.15	Inspect and test switches, connectors, relays, and wires of electrical/electronic circuits, perform necessary action.	P-1
VI.A.16	Repair wiring harnesses and connectors.	P-1
VI.A.17	Perform solder repair of electrical wiring.	P-1
VI.A.3	Check voltage and voltage drop in electrical/electronic circuits using a digital multimeter(DMM); determine necessary action.
VI.A.4	Check current flow in electrical/electronic circuits and components using an ammeter; determine necessary action.
B	Battery Diagnosis and Service
VI.B.1	Perform battery state-of-charge test; determine necessary action.	P-1
VI.B.2	Perform battery capacity test; confirm proper battery capacity for vehicle application; determine necessary action.	P-1
VI.B.3	Maintain or restore electronic memory functions.	P-1
VI.B.4	Inspect, clean, fill, and replace battery.	P-2
VI.B.5	Perform slow/fast battery charge.	P-2
VI.B.6	Inspect and clean battery cables, connectors, clamps, and hold-downs; repair or replace as needed.	P-1
VI.B.7	Start a vehicle using jumper cables and a battery or auxiliary power supply.	P-1
C	Starting System Diagnosis and Repair
VI.C.1	Perform starter current draw tests; determine necessary action.	P-1
VI.C.2	Perform starter circuit voltage drop test; determine necessary action.	P-1
VI.C.3	Inspect and test starter relays and solenoids; determine necessary action.	P-2
VI.C.4	Remove and install starter in a vehicle.	P-1
VI.C.5	Inspect and test switches, connectors, and wires of starter control circuits; perform necessary action.	P-2
VI.C.6	Differentiate between electrical and engine mechanical problems that cause a slow-crank or no-crank condition.	P-2
D	Charging System Diagnosis and Repair
VI.D.1	Perform charging system output test; determine necessary action.	P-1
VI.D.2	Diagnose charging system for the cause of undercharge, no-charge, and overcharge conditions.	P-1
VI.D.3	Inspect, adjust or replace generator (alternator) drive belts, pulleys, and tensioners; check pulley and belt alignment.	P-2
VI.D.4	Remove, inspect, and install generator (alternator)	P-1
VI.D.5	Perform charging circuit voltage drop tests; determine necessary action.	P-1
E	Lighting Systems Diagnosis and Repair
VI.E.1	Diagnose the cause of brighter than normal, intermittent, dim, or no light operation; determine necessary action.	P-1
VI.E.2	Inspect, replace, and aim headlights and bulbs.	P-2
VI.E.3	Inspect and diagnose incorrect turn signal or hazard light operation; perform necessary action.	P-2
F	Gauges, Warning Devices, and Driver Information Systems Diagnosis and Repair
VI.F.1	Inspect and test gauges and gauge sending units for cause of intermittent, high, low or no gauge readings; determine necessary action.	P-1
VI.F.2	Inspect and test connectors, wires, and printed circuit boards of gauge circuits; determine necessary action.	P-3
VI.F.3	Diagnose the cause of incorrect operation of warning devices and other driver information systems; determine necessary action.	P-1
VI.F.4	Inspect and test sensors, connectors, and wires of electronic instrument circuits; determine necessary action.	P-2
G	Horn and Wiper/Washer Diagnosis and Repair
VI.G.1	Diagnose incorrect horn operation; perform necessary action.	P-2
VI.G.2	Diagnose incorrect wiper operation; diagnose wiper speed control and park problems; perform necessary action.	P-2
VI.G.3	Diagnose incorrect washer operation; perform necessary action.	P-2
H	Accessories Diagnosis and Repair
VI.H.1	Diagnose incorrect operation of motor-driven accessory circuits; determine necessary action.	P-2
VI.H.2	Diagnose incorrect heated glass operation; determine necessary action.	P-3
VI.H.3	Diagnose incorrect electric lock operation; determine necessary action.	P-2
VI.H.4	Diagnose incorrect operation of cruise control systems; determine necessary action.	P-3
VI.H.5	Diagnose supplemental restraint system (SRS) concerns; determine necessary action (Note: follow manufacturer's safety procedures to prevent accidental deployment).	P-2
VI.H.6	Disarm and enable the airbag system for vehicle service.	P-1
VI.H.7	Diagnose radio static and weak, intermittent, or no radio reception; determine necessary action.	P-3
VI.H.8	Remove and reinstall door panel.	P-1
VI.H.9	Diagnose body electronic system circuits using a scan tool; determine necessary action.	P-2
VI.H.10	Check for module communication errors using a scan tool.	P-3
VI.H.11	Diagnose the cause of false, intermittent, or no operation of anti-theft system.	P-2

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