Powertrain Electronics Assessment

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  1. 1. A Variable Reluctance sensor can be tested for what two values with a DMM?

  2. 2. Technician A states that a voltage divider circuit can be used to represent information. Technician B states that a voltage divider circuit is often used as a high-side driver. Who is correct?

  3. 3. The illustration below shows a circuit being tested for what?

    Powertrain Circuit Testing

  4. 4. All these are factors that affect the resistance of an electrical conductor EXCEPT:

  5. 5. Technician A states that the voltage PID for a sensor that uses a pullup circuit should go high if the sensor is unplugged. Technician B says the voltage PID for a sensor that uses a pullup circuit should go low if the sensor is unplugged. Who is correct?

  6. 6. A technician is testing a driver circuit as shown. What should the meter read with a good module?

    Powertrain driver circuit

  7. 7. A technician suspects that a 3-wire sensor has a wiring or module problem and finds the following. What is the most likely fault?

    Powertrain 3 wire sensor

  8. 8. In this simple circuit, the voltage drop across the bulb is very high but does not equal the total voltage rise. What does this indicate?

    Powertrain Simple Cicuit

  9. 9. A PCM high side driver:

  10. 10. Technician A states that if a 5V REF signal to a sensor is shorted to ground, the ECU will be damaged. Technician B states that the module may need reprogramming if this happens. Who is correct?

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