Montgomery College 2015-2016 Catalog 
    Apr 01, 2023  
Montgomery College 2015-2016 Catalog [ARCHIVED CATALOG]

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AUTO 264 - Hybrid/Electric Vehicles

(R only) CE

Preparation for ASE L-3 Light Duty Hybrid/Electric Vehicle technician certification exam.  Discusses the purpose, parts, operation and failure diagnosis of automotive hybrid electric vehicles.  Topics include inspection, maintenance, testing, diagnosis and repair of high voltage battery systems, electric motor drive systems, power electronics and hybrid supporting systems.  Special diagnostic requirements for the hybrid “ICE” will be included. Current hybrid platforms will also be discussed. PREREQUISITE(S): A grade of C or better in AUTO 262  and AUTO 263 . Two hours each week.

2 semester hours

Course Outcomes:
Upon course completion, a student will be able to:

  • Perform high voltage disconnect procedure; reconnect/enable high voltage system.
  • Select, test and use proper safety gloves.
  • Select, qualify and use proper DMM and leads.
  • Retrieve and diagnose DTCs; determine needed repairs.
  • Diagnose problems caused by damaged or failed harnesses, connectors, terminals and fuses.
  • Diagnose high voltage (HV) battery pack malfunctions.
  • Remove and install high voltage battery pack.
  • Test, diagnose and repair high voltage leaks/loss of isolation.
  • Test, diagnose and repair high voltage battery pack heating and cooling systems.
  • Test, diagnose, repair or replace high voltage battery pack internal components
  • Retrieve and diagnose DTCs; determine needed repairs.
  • Differentiate between driveability 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.
  • Determine if the internal combustion engine (ICE) is in CRANK mode or RUN mode.
  • 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.
  • Test, diagnose and repair high voltage leaks/loss of isolation.
  • 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.
  • Identify procedures necessary to establish the proper vehicle operational power mode during service (OFF, ACCESSORY, POWER ON, READY TO DRIVE).
  • Diagnose the cause of a hybrid system warning displayed on the instrument panel, and/or a driveability complaint.
  • Diagnose impact sensor problems: determine needed repair.
  • Diagnose AC/DC inverter overheating; determine needed repair.
  • Diagnose AC/DC inverter failure; determine needed repair.
  • Replace AC/DC inverter cooling pump.
  • Remove and install AC/DC inverter.
  • Diagnose failures in the data communications bus network; determine needed repair.
  • Locate and test the voltage level of capacitors.
  • Diagnose, locate and safely disable/enable safety interlocks.
  • Diagnose failed DC/DC converter; determine needed repair.
  • Remove and install DC/DC converter.
  • Test high voltage cable integrity and loss of isolation.
  • Perform 12-volt battery testing.
  • Diagnose system main relay (SMR)/contactor malfunctions; determine needed repairs.
  • Inspect, test and diagnose EVAP emission system components; determine needed repairs.
  • Observe and interpret driver indicators, power flow display and energy monitor; determine necessary action.
  • Test and diagnose high voltage air conditioning compressor malfunctions; diagnose system problems; determine needed repairs.
  • Remove and install high voltage air conditioning compressor; identify and select proper system oil.
  • Diagnose cabin heating system performance problems; determine needed repairs.
  • Diagnose and repair electric/electronic steering systems.
  • Diagnose brake system performance problems; differentiate between braking problems caused by hydraulic system and regenerative system malfunctions; determine needed repairs.
  • Deactivate brake system self-test prior to service.
  • Service liquid cooling system(s).


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