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