AST 103 - Electrical Systems II
Credit Hours: 4
Billable Contact Hours: 5
Prerequisites: AST 101 , AST 102
Session Cycle: WI
This course is a continuation from Electrical Systems I. Topics include, but are not limited to, the fundamentals, diagnostics, and service of the following areas: advanced battery design, starting systems, starter motors, charging systems, and lighting circuits, instrumentation and warning lamps, accessories, passive restraints, and alternative power sources as well as, the proper tools and equipment used to perform diagnostics and service procedures.
Notes: Applied Science and Engineering Technology Division
Theory Hours: 45
Lab Hours: 30
Learning Outcomes:
1. Understand and demonstrate starting system operation, diagnosis and repair.
a) Perform starter current draw tests; determine necessary action.
b) Perform starter circuit voltage drop tests; determine necessary action.
c) Inspect and test starter relays and solenoids; determine necessary action.
d) Remove and install starter in a vehicle.
e) Inspect and test switches, connectors, and wires of starter control circuits; determine necessary action.
f) Differentiate between electrical and engine mechanical problems that cause a slowcrank or a no-crank condition.
Applies to Automotive Service Technology, A.A.S. and Automotive Service Technology, Certificate Outcomes A, B, C, D, E, and F.
2. Course Outcome Summary Required Program Core Course AST 103 Automotive Electrical Systems II Understand and demonstrate charging system operation, diagnosis and repair.
a) Perform charging system output test; determine necessary action.
b) Diagnose (troubleshoot) charging system for causes of undercharge, no-charge, or overcharge conditions.
c) Inspect, adjust, or replace generator (alternator) drive belts; check pulleys and tensioners for wear; check pulley and belt alignment.
d) Remove, inspect, and re-install generator (alternator).
e) Perform charging circuit voltage drop tests; determine necessary action.
Applies to Automotive Service Technology, A.A.S. and Automotive Service Technology, Certificate Outcomes A, B, C, D, E, and F.
3. Understand and demonstrate lighting system operation, diagnosis and repair.
a) Diagnose (troubleshoot) the causes of brighter-than-normal, intermittent, dim, or no light operation; determine necessary action.
b) Inspect interior and exterior lamps and sockets including headlights and auxiliary lights (fog lights/driving lights); replace as needed.
c) Aim headlights.
d) Identify system voltage and safety precautions associated with high-intensity discharge headlights.
Applies to Automotive Service Technology, A.A.S. and Automotive Service Technology, Certificate Outcomes A, B, C, D, E, and F.
4. Understand and demonstrate gauge, warning device, and driver information systems operation, diagnosis and repair. T
a) Inspect and test gauges and gauge sending units for causes of abnormal gauge readings; determine necessary action.
b) Diagnose (troubleshoot) the causes of incorrect operation of warning devices and other driver information systems; determine necessary action.
Applies to Automotive Service Technology, A.A.S. and Automotive Service Technology, Certificate Outcomes A, B, C, D, E, and F.
5. Understand and demonstrate horn and wiper/washer operation, diagnosis, and repair.
a) Diagnose (troubleshoot) causes of incorrect horn operation; perform necessary action.
b) Diagnose (troubleshoot) causes of incorrect wiper operation; diagnose wiper speed control and park problems; perform necessary action.
c) Diagnose (troubleshoot) windshield washer problems; perform necessary action.
Applies to Automotive Service Technology, A.A.S. and Automotive Service Technology, Certificate Outcomes A, B, C, D, E, and F.
6. Understand and demonstrate accessory operation diagnosis and repair.
a) Diagnose (troubleshoot) incorrect operation of motor-driven accessory circuits; determine necessary action.
b) Diagnose (troubleshoot) incorrect electric lock operation (including remote keyless entry); determine necessary action.
c) Diagnose (troubleshoot) incorrect operation of cruise control systems; determine necessary action.
d) Diagnose (troubleshoot) supplemental restraint system (SRS) problems; determine necessary action.
e) Disable and enable an airbag system for vehicle service; verify indicator lamp operation.
f) Remove and reinstall door panel.
g) Check for module communication errors (including CAN/BUS systems) using a scan tool.
h) Describe the operation of keyless entry/remote-start systems.
i) Verify operation of instrument panel gauges and warning/indicator lights; reset maintenance indicators.
j) Verify windshield wiper and washer operation, replace wiper blades.
k) Diagnose (troubleshoot) radio static and weak, intermittent, or no radio reception; determine necessary action.
l) Diagnose (troubleshoot) body electronic system circuits using a scan tool; determine necessary action.
m) Diagnose the cause(s) of false, intermittent, or no operation of anti-theft systems.
n) Describe the process for software transfers, software updates, or flash reprogramming on electronic modules.
Applies to Automotive Service Technology, A.A.S. and Automotive Service Technology, Certificate Outcomes A, B, C, D, E, and F.
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