NAVTTC Auto Electrician study plan

Identify the personal protective equipment and shop-housekeeping rules required before touching any vehicle circuit, and state the hazard each item controls

Demonstrate safe use of a multimeter, test light and fused jumper leads on a de-energised bench circuit without shorting or back-probing damage

Explain lockout and battery-disconnect sequence so airbag and electronic modules are not damaged or triggered

Define voltage, current and resistance and measure each on a simple series circuit, recording readings in a log

Apply Ohm's law and power formula to calculate unknown values in series, parallel and series-parallel circuits

Draw and label a wiring diagram from a physical mock-up using standard symbols for battery, switch, relay, lamp and ground

Use voltage-drop testing to locate a high-resistance joint in a loaded circuit and explain why an ohmmeter alone can mislead

Select correct wire gauge, fuse rating and terminal for a given accessory load and justify the choice

Describe lead-acid battery construction and explain how state of charge, specific gravity and open-circuit voltage relate

Perform and interpret a battery test sequence: visual inspection, open-circuit voltage, load or conductance test, and charging-system check

Explain alternator rectification and regulation, and identify the function of each terminal on a typical integral alternator

Diagnose a no-charge condition by isolating battery, belt, wiring, regulator and alternator faults in a logical order

Trace a starter circuit from ignition switch through relay, solenoid and motor, and state the current path in each stage

Measure cranking voltage, voltage drop on the earth and positive paths, and current draw, then compare against expected limits

Diagnose a slow-crank and a no-crank fault using a structured decision sequence rather than parts substitution

Explain how the neutral or clutch start switch and immobiliser interlock with the starter control circuit

Explain the operation of a coil-per-cylinder and a distributor ignition system and identify the primary and secondary circuit paths

Test an ignition coil, spark plug and ignition lead and interpret the readings against specification

Diagnose a misfire by distinguishing ignition, fuel and mechanical causes using spark testing and waveform or scope evidence where available

Describe how electronic ignition timing is controlled by the engine control module and the role of the crank and cam sensors

Trace headlamp, tail, brake, indicator and hazard circuits and explain the role of relays, flasher units and earth returns

Diagnose a single-lamp failure, a dim-lamp condition and a blown-fuse repeat failure using voltage-drop and current measurement

Test a relay and a switch out of circuit and in circuit, and state how each result changes the diagnosis

Explain how accessory circuits such as wipers, horn and power windows are protected and controlled, including multiplexed body control modules

Apply a six-step diagnostic routine: verify the complaint, gather information, analyse the circuit, test, repair and confirm

Interpret a wiring diagram to choose test points and predict expected readings before measuring

Use a scan tool and a multimeter together to separate a sensor fault from a wiring or module fault

Document a repair so another technician could repeat the diagnosis from the record alone

Complete a timed mixed-topic practice set across all five domains and score each domain separately

Re-test every previously missed item and state the underlying principle behind each correction

Perform a final practical check of tool condition, meter calibration and workshop safety compliance

Build a one-page personal reference sheet of key formulas, specifications and diagnostic sequences for exam day