AUTT 1020 Syllabus
Subject Code
AUTT
Course Number
1020
Course Title
Automotive Electrical Systems
Prerequisites
Corequisites
AUTT 1010
Terms Offered
Offered Fall and Spring
Credit Hours
(2-14-7)
Course Description
This course introduces automotive electricity and emphasizes the basic principles, diagnosis, and service/repair of batteries, starting systems, starting system components, alternators and regulators, lighting systems, gauges, horns, wipers/washers, and accessories. Students must pay a $20 supply fee when registering for this course.
Course Outcomes
General Electrical System Diagnosis
Order Description
1 Complete work order to include customer information, vehicle identifying information, customer
concern, related service history, cause, and correction. P-1
2 Identify and interpret electrical/electronic system concern; determine necessary action. P-1
3 Research applicable vehicle and service information, such as electrical/electronic system
operation, vehicle service history, service precautions, and technical service bulletins. P-1
4 Locate and interpret vehicle and major component identification number. P-1
5 Diagnose electrical/electronic integrity of series, parallel, and series/parallel circuits using
principles of electricity (Ohms Law). P-1
6 Use wiring diagrams during diagnosis of electrical circuit problems. P-1
7 Demonstrate the proper use of a digital multimeter (DMM) during diagnosis of electrical circuit
problems, including: source voltage, voltage drop, current flow, and resistance. P-1
8 Check electrical circuits with a test light; determine necessary action. P-2
9 Check electrical/electronic circuit waveforms; interpret readings and determine needed repairs.
P-2
10 Check electrical circuits using fused jumper wires; determine necessary action. P.2
11 Locate shorts, grounds, opens, and resistance problems in electrical/electronic circuits;
determine necessary action. P-1
12 Measure and diagnose the cause(s) of excessive parasitic draw; determine necessary action. P-1
13 Inspect and test fusible links, circuit breakers, and fuses; determine necessary action. P-1
14 Inspect and test switches, connectors, relays, solenoid solid-state devices, and wires of
electrical/electronic circuits; perform necessary action. P-1
15 Remove and replace terminal end from connector; replace connectors and terminal ends. P-1
16 Repair wiring harness (including CAN/BUS systems). P-1
17 Perform solder repair of electrical wiring. P-1
18 Identify location of hybrid vehicle high voltage circuit disconnect (service plug) location and
safety procedures. P-2
Battery Diagnosis and Service
Order Description
1 Perform battery state-of-charge tests; determine necessary action. P-1
2 Perform battery capacity test; confirm proper battery capacity for vehicle application, determine
necessary action. P-1
3 Maintain or restore electronic memory function. P-1
4 Inspect, clean, fill, and/or replace battery, battery cables, connectors, clamps, and hold-downs.
P-1
5 Perform battery charge. P-1
6 Start a vehicle using jumper cables or an auxiliary power supply. P-1
7 Identify high voltage circuits of electric or hybrid electric vehicle and related safety precautions.
P-3
8 Identify electronic modules, security systems, radios, and other accessories that require
reinitialization or code entry following battery disconnect. P-1
9 Identify hybrid vehicle auxiliary (12V) battery service, repair and test procedures. P-3
Starting System Diagnosis and Repair
Order Description
1 Perform starter current draw tests; determine necessary action. P-1
2 Perform starter circuit voltage drop tests; determine necessary action. P-1
3 Inspect and test starter relays and solenoids; determine necessary action. P-2
4 Remove and install starter in a vehicle. P-1
5 Inspect and test switches, connectors, and wires of starter control circuits; perform necessary
action. P-2
6 Differentiate between electrical and engine mechanical problems that cause a slow-crank or no-
crank condition. P-2
Charging System Diagnosis and Repair
Order Description
1 Perform charging system output test; determine necessary action. P-1
2 Diagnose charging system for the cause of undercharge, no-charge, and over-charge
conditions.P.1
3 Inspect, adjust, or replace generator (alternator) drive belts, pulleys, and tensioners; check
pulley and belt alignment. P-1
4 Remove, inspect, and install generator (alternator). P-1
5 Perform charging circuit voltage drop tests; determine necessary action. P-1
Lighting System Diagnosis and Repair
Order Description
1 Diagnose the cause of brighter than normal, intermittent, dim, or no light operations;
determine necessary action. P-1
2 Inspect, replace, and aim headlights and bulbs. P-2
3 Inspect and diagnose incorrect turn signal or hazard light operation; perform necessary action.
P-2
4 Identify system voltage and safety precautions associate with high intensity discharge
headlights. P-2
Gauges, Warning Devices, and Driver Information Systems Diagnosis and Repair
Order Description
1 Inspect and test gauges and gauge sending units for cause of abnormal gauge readings,
determine necessary action. P-1
2 Inspect and test connectors, wires, and printed circuit boards of gauge circuits; determine
necessary action. P-3
3 Diagnose the cause of incorrect operation of warning devices and other driver information
systems; determine necessary action. P-1
4 Inspect and test sensors, connectors, and wires of electronic (digital) instrument circuits;
determine necessary action. P-3
Horn and Wiper/Washer Diagnosis and Repair
Order Description
1 Diagnose incorrect horn operation; perform necessary action. P-1
2 Diagnose incorrect wiper operation; diagnose wiper speed control and park problems; perform
necessary action. P-1
3 Diagnose incorrect washer operation; perform necessary action. P-2
Accessories Diagnosis and Repair
Order Description
1 Diagnose incorrect operation of motor-driven accessory circuits; determine necessary action.
P-1
2 Diagnose incorrect heated glass, mirror, or seat operation; determine necessary action. P-3
3 Diagnose incorrect electric lock operation (including remote keyless entry); determine necessary
action. P-1
4 Diagnose incorrect operation of cruise control systems; determine necessary action. P-3
5 Diagnose supplemental restraint system (SRS) concerns; determine necessary action. P-1
6 Disarm and enable the airbag system for vehicle service. P-1
7 Diagnose radio static and weak, intermittent, or no radio reception; determine necessary action.
P-3
8 Remove and reinstall door panel. P-1
9 Diagnose body electric system circuits using a scan tool; determine necessary action. P-2
10 Check for module communication (including CAN/BUS systems) errors using a scan tool. P-2
11 Diagnose the cause of false, intermittent, or no operation of anti-theft systems. P-3
12 Describe the operation of keyless entry/remote-start systems. P-3
13 Perform software transfers, software updates, or flash reprogramming on electronic modules.
P-3