Automotive Technology

7th Edition
ERJAVEC + 1 other
Publisher: Cengage,
ISBN: 9781337794213



Automotive Technology

7th Edition
ERJAVEC + 1 other
Publisher: Cengage,
ISBN: 9781337794213
Chapter 21, Problem 2ASRQ
Textbook Problem

None of the engines gauges works: Technician A tests gauge operation using a scan tool. Technician B begins by checking the fuse and then checks for voltage at the last point common to all the malfunctioning gauges. Who is correct?

  1. Technician A

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

    Whether Technician A or Technician B is or are correct.

    Explanation of Solution

    A gauge is a fed current or voltage input from the sensor. According to the magnitude of the input received at the gauge, the needle swings in a forward or reverse direction.

    The non-operational gauges are checked using a test light or a scan tool. A scan tool is an electronic module which is used to interface, diagnose and reprogram vehicle system modules. The scan tool depicts the solved and pending trouble codes. The scan tool also monitors other vital systems of the vehicle...

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