This circuit module is compatible with all the D3000 Base Unit options and introduces students to automotive engine control and management systems (ECU and Sensors) and the concepts of diagnostics through a wide range of practical activities.
Typical topic areas include:
- Fuel System Electronics – The Basics
- Emission Control
- Self Diagnosis and Trouble Codes
Typical activities include:
- Interpret schematic and block diagrams.
- Identify a typical engine control Vref value.
- Identify the reason for using both crankshaft and camshaft position sensors.
- Recognize how to check correct operation of the engine coolant temperature sensor.
- Determine the typical voltages produced by an exhaust gas oxygen sensor.
- Diagnose faults with the throttle position potentiometer.
- State the advantages of computer control for vehicle systems.
- Convert flash type trouble codes into numerical codes.
- Recognize why injection time varies with engine temperature.
- Recognize how mixture strength is affected by injector open time.
- Diagnose faults with injectors.
- Recognize the operating principle of air injection.
- Measure resistance of the EGR solenoid.
- Recognize how to activate computer self-diagnosis and the purpose of a 'wiggle' test.
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