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Automotive Technology: A Systems A...

6th Edition
Jack Erjavec + 1 other
ISBN: 9781133612315

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Chapter
Section
BuyFindarrow_forward

Automotive Technology: A Systems A...

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

While discussing monitoring systems: Technician A says that the fuel system monitor checks the shortterm and long-term fuel trims. Technician B says that the heated oxygen sensor monitoring system checks lean-to-rich and rich-to-lean response times. Who is correct?

  1. Technician A

  • Technician B
  • Both A and B
  • Neither A nor B
  • To determine

    The technician with correct approach while discussing monitoring system.

    Explanation

    Given information:

    Technician A says that the fuel system monitor checks the short-term and long-term fuel trim. Technician B says that the heated oxygen sensor monitoring system checks lean-to-rich and rich-to-lean response time.

    In the case of a fuel system monitor, when the adjustments made to the amount of fuel from the fuel injectors are beyond a certain range the PCM makes correction to the pulse width by fuel trim. A fuel system monitor checks the short-term fuel trim and long-term fuel trim adjustments when the PCM demands for fuel trim...

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