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Automotive Technology: A Systems A...

6th Edition
Jack Erjavec + 1 other
ISBN: 9781133612315

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BuyFindarrow_forward

Automotive Technology: A Systems A...

6th Edition
Jack Erjavec + 1 other
ISBN: 9781133612315
Textbook Problem

While discussing throttle-by-wire systems: Technician A says that a spring on the throttle shaft provides the limp-home feature. Technician B says that most systems have redundant processors and the TP and accelerator pedal sensors send redundant input signals. Who is correct?

a. Technician A

b. Technician B

c. Both A and B

d. Neither A nor B

To determine

Whether Technician A or Technician B is correct.

Explanation

In a throttle-by-wire system, the following points are true:

  • Two springs are attached to the throttle plate shaft. It provides a limp home feature. The stronger spring is used to open the throttle plate slightly, whereas the weaker spring is used to close the throttle plate.
  • There is a high probability that the systems have redundant processors, TP sensors and accelerator pedal sensor that sends redundant signals to the PCM...

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