AUTO 241 - Hybrid/EV Engine and Drive Systems

Credits: 3
Instructional Contact Hours: 3

Practices the diagnostic procedures and repair of hybrid gasoline internal combustion engines and hybrid/EV drive systems. Practices ASE Education Foundation Tasks related to High Voltage/Electric Vehicle systems.

Prerequisite(s): ASEP 100 or AUTO 100, ASEP 101 or AUTO 101, ASEP 102 or AUTO 102, and ASEP 106 or AUTO 106 and AUTO 236 with a grade of “C” or ASE (Automotive Service Excellence) A1, A2, and A6 Certification as verified by instructor or program coordinator.
Corequisite(s): None
Lecture Hours: 15 Lab Hours: 30
Meets MTA Requirement: None
Pass/NoCredit: No

Outcomes and Objectives

1. Diagnose and complete ASE Education Foundation tasks as listed below.

A. Safety Related Tasks

Perform high voltage disconnect procedure; reconnect/enable high voltage system.
Select, test, and use proper safety gloves.
Select, qualify, and use proper electrical testing equipment and leads.

B. Internal Combustion Engine Related Tasks

Retrieve and diagnose DTCs; determine needed repairs.
Determine if the internal combustion engine (ICE) is in CRANK mode or RUN mode.
Differentiate between drivability problems caused by the internal combustion engine and/or hybrid drive system.
Perform internal combustion engine cranking compression test.
Keep the internal combustion engine running during service.
Diagnose internal combustion engine no-crank condition.
Diagnose internal combustion engine cranks/no-start condition.
Interpret vacuum and compression readings on Atkinson cycle engines.
Identify engine start/stop strategy; diagnose malfunctions.
Service engine cooling system.

C. Drive Systems

Retrieve and diagnose driveline DTCs; determine needed repairs.
Diagnose problems caused by damaged or failed harnesses, connectors, and terminals.
Test, diagnose and repair high voltage leaks/loss of isolation.
Demonstrate knowledge of safe handling procedures associated with high-voltage powertrain components, such as electric motors.
Remove and install rotor from stator.
Diagnose motor-rotor position sensor (Resolver or Encoder type).
Diagnose drive/traction motor-generator assembly for improper operation (such as an inoperative condition, noise, shudder, overheating, etc.).
Diagnose improper electrically actuated parking pawl operation; determine needed repair.
Identify transmission fluid and coolant fluid requirements; verify fluid levels.