Chapter 8: Sharpen Your Skills with ASE-Style Questions
All of the following statements about servicing the BCM are true EXCEPT: - correct answer ✔✔b. Analog
voltmeters must be used to test circuit voltage.
Diagnostic trouble codes are being discussed. Technician A says hard code failures are those that have
occurred in the past but were not present during the last BCM test of the circuit. Technician B says
intermittent codes are those that were detected the last time the BCM tested the circuit. Who is correct?
- correct answer ✔✔d. Neither A nor B
Technician A says DTCs will indicate the exact failure in the circuit. Technician B says DTCs will direct the
technician to the circuit with a fault in it.Who is correct? - correct answer ✔✔b. B only
Accessing trouble codes is being discussed. Technician A says a scan tool is required to access DTCs on all
vehicles since 1996.Technician B says the body codes are prefixed with a "U."Who is correct? - correct
answer ✔✔d. Neither A nor B
When flashing a computer, all of the following are true EXCEPT: - correct answer ✔✔d. The BCM must be
removed from the vehicle before it is flashed.
Technician A says open circuit testing of the BCM power supplies will indicate if there is high resistance in
the circuit.Technician B says that open circuit testing has the potential to lead to improper
diagnostics.Who is correct? - correct answer ✔✔b. B only
If the scan tool fails to make connection with the BCM, all of the following could be the cause EXCEPT: -
correct answer ✔✔b. Open actuator circuit.
Technician A says a PWM actuator cannot be tested with a DMM.Technician B says the PWM actuator
may be tested with a lab scope.Who is correct? - correct answer ✔✔b. B only
A high-side controlled actuator fails to operate. The scan tool displays 0 amp on the control circuit when
the system is attempted to be turned on.Technician A says this may indicate an open in the
circuit.Technician B says this may indicate a short to ground in the circuit.Who is correct? - correct
answer ✔✔c. Both A and B
All of the following statements about servicing the BCM are true EXCEPT: - correct answer ✔✔b. Analog
voltmeters must be used to test circuit voltage.
Diagnostic trouble codes are being discussed. Technician A says hard code failures are those that have
occurred in the past but were not present during the last BCM test of the circuit. Technician B says
intermittent codes are those that were detected the last time the BCM tested the circuit. Who is correct?
- correct answer ✔✔d. Neither A nor B
Technician A says DTCs will indicate the exact failure in the circuit. Technician B says DTCs will direct the
technician to the circuit with a fault in it.Who is correct? - correct answer ✔✔b. B only
Accessing trouble codes is being discussed. Technician A says a scan tool is required to access DTCs on all
vehicles since 1996.Technician B says the body codes are prefixed with a "U."Who is correct? - correct
answer ✔✔d. Neither A nor B
When flashing a computer, all of the following are true EXCEPT: - correct answer ✔✔d. The BCM must be
removed from the vehicle before it is flashed.
Technician A says open circuit testing of the BCM power supplies will indicate if there is high resistance in
the circuit.Technician B says that open circuit testing has the potential to lead to improper
diagnostics.Who is correct? - correct answer ✔✔b. B only
If the scan tool fails to make connection with the BCM, all of the following could be the cause EXCEPT: -
correct answer ✔✔b. Open actuator circuit.
Technician A says a PWM actuator cannot be tested with a DMM.Technician B says the PWM actuator
may be tested with a lab scope.Who is correct? - correct answer ✔✔b. B only
A high-side controlled actuator fails to operate. The scan tool displays 0 amp on the control circuit when
the system is attempted to be turned on.Technician A says this may indicate an open in the
circuit.Technician B says this may indicate a short to ground in the circuit.Who is correct? - correct
answer ✔✔c. Both A and B
