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Powertrain Electronics Assessment

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1. 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?
- Technician A
- Technician B
- Both technicians
- Neither technician
2. All these are factors that affect the resistance of an electrical conductor EXCEPT:
- Cross-sectional area
- Temperature
- Weight
- Length
3. 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?
- Technician A
- Technician B
- Both technicians
- Neither technician
4. A technician is testing a driver circuit as shown. What should the meter read with a good module?
Powertrain driver circuit
- 0 volts
- 12 volts
- 6 volts
- Battery voltage
5. The illustration below shows a circuit being tested for what?
Powertrain Circuit Testing
- Voltage
- Current
- Resistance
- Frequency
6. 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?
- Technician A
- Technician B
- Both Technicians
- Neither technician
7. A Variable Reluctance sensor can be tested for what two values with a DMM?
- Duty Cycle and Resistance
- Voltage and Amperes
- Amperes and Frequency
- Voltage and Resistance
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
- Excessive resistance
- Excessive capacitance
- Very high current flow
- The bulb will likely illuminate normally
9. A PCM high side driver:
- Handles power side circuit control to a device
- Is only used for control of high current devices
- Makes fused circuit protection obsolete
- Handles ground side circuit control to a device
10. 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
- The module is using a pull-down circuit
- The module GND circuit has failed
- The module has failed
- The signal wire is shorted to voltage

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