AUT 3011 - Electric & Electronic Systems I

A. General

1. Research vehicle information such as fluid type, vehicle service history, service precautions, technical service bulletins, and recalls including vehicles equipped with advanced driver assistance systems (ADAS).
2. Identify electrical/electronic system components and configurations.
3. Retrieve and record DTC’s, OBD monitor status, and freeze frame data; clear codes and data when directed.
4. Demonstrate knowledge of electrical/electronic series, parallel and series-parallel circuits using principles of electricity (Ohm’s Law).
5. Demonstrate proper use of a digital multi-meter (DMM) when measuring source voltage, voltage drop (including grounds), current flow and resistance.
6. Demonstrate knowledge of the causes and effects from shorts, grounds, opens, and resistance problems in electrical/electronic circuits.
7. Describe types of test lights; use appropriate test light to check operation of electrical circuits per service information.
8. Used fused jumper wires to check operation electrical circuits per service information.
9. Use wiring diagrams during the diagnosis of electrical/electronic circuit problems. 
10. Diagnose the cause(s) of excessive key-off battery drain (parasitic draw); determine needed action.
11. Inspect and test fusible links, circuit breakers, and fuses; determine needed action.
12. Inspect, test, repair, and/or replace components, connectors, terminals, harnesses, and wiring in electrical/electronic systems (including solder repairs); determine needed action.
13. Test and measure circuit using an oscilloscope and/or graphing multi-meter (GMM); interpret results; determine needed action. 

B. Battery (Conventional 12-Volt)

1. Perform battery state-of-charge test; determine needed action.
2. Confirm proper battery capacity, size, type, and application for vehicle, perform battery capacity and load test; determine needed action.
3. Maintain or restore electronic memory functions as recommended by manufacturer.
4. Inspect and clean battery; fill battery cells (if applicable); check battery cables, connectors, clamps, and hold-downs.
5. Perform battery charge according to manufacturer’s recommendations.
6. Jump-start vehicle using jumper cables and a booster battery or an auxiliary power supply.
7. Identify electrical/electronic modules, security systems, radios, and other accessories that require re-initialization or code entry after reconnecting vehicle battery.

C. Starting System

1. Perform starter current draw tests; determine needed action.
2. Perform starter circuit voltage drop tests; determine needed action.
3. Inspect and test starter relays and solenoids; determine needed action.
4. Remove and install starter in a vehicle.
5. Inspect and test switches, connectors, and wires of starter control circuits; determine needed action.
6. Demonstrate knowledge of an automatic idle-stop/start-stop system.
7. Differentiate between electrical and engine mechanical problems that cause a slow-crank or a no-crank condition.
8. Diagnose a no-crank condition using a wiring diagram and test equipment; determine needed action.

D. Charging System

1. Perform charging system output test; determine needed action.
2. Inspect, adjust, and/or replace generator (alternator) drive belts; check pulleys and tensioners for wear; check pulley and belt alignment; determine needed action.
3. Remove, inspect, and/or replace generator (alternator); determine needed action.
4. Perform charging circuit voltage drop tests; determine needed action.
5. Diagnose charging system for causes of undercharge, no-charge, or overcharge conditions.