Objectives 623 Electrical Circuit Diagnosis Inductors • Describe the principles of electromagnetism and inductance and their relation to electrical circuits and components • Describe the operation of relays and relay blocks • Demonstrate the procedure for testing relays Wiring, Terminal and Connector Repairs • Identify and distinguish between different conductors, connectors, and wiring harnesses and demonstrate the ability to locate connector repair information on TIS • Determine wire insulation color codes and wire size • Isolate terminal problems and conductor damage The Battery • Perform an effective visual inspection of the battery and related wiring • Demonstrate the use of the GR8 Diagnostic Station to test batteries • Perform a “surface discharge” and “parasitic load” test The Starting System • Identify starting system components and describe their function • Perform a visual inspection, describe circuit operation, and predict expected voltages in a normally operating starting circuit • Describe and/or demonstrate starter motor current draw testing, starter circuit voltage drop testing, starter relay tests, park/neutral position and clutch start switch adjustments, clutch start cancel switch testing, and starter motor bench testing • Demonstrate correct use of approved starting system test equipment The Charging System • Identify charging system components and describe their function • Perform a visual inspection, describe circuit operation, and identify expected voltages in a normally operating charging system • Perform voltage drop tests on the charging circuit and an alternator output test (with and without load) • Demonstrate correct use of approved charging system test equipment Introduction to Electronic Signals (optional - instructor discretion based upon target audience skill level and time) • Distinguish between analog and digital signals.
• Describe how ECUs monitor operating conditions and process system data • Identify the function of a digital oscilloscope in circuit analysis • Demonstrate the correct use of an oscilloscope (OPTIONAL) d Technical Training