Technician A says that the reason for twisting the wires on a J1939 data backbone is to enable the data bus to act as a giant aerial. Technician B says that J1939 requires the data wire pair to cycle through one full cycle twist per 1 centimeter of length. Who is correct?

A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A nor B


Answer: B

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Which of the following will cause diagnostic codes to set?

A. Transmission faults B. Computer network faults C. Emission faults D. All of the above

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The Hollomon equation is:

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Under normal operations, some outside air will always be included to

A) control the temperature more accurately. B) increase the speed of air circulation. C) maintain the correct humidity levels. D) prevent excessive levels of CO2 from building up.

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Technician A says that torque steer is normal on some FWD cars, especially during heavy acceleration. Technician B says that broken engine mounts can cause abnormal torque steer. Which technician is correct?

A) Technician A only B) Technician B only C) Both technicians D) Neither technician

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