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While discussing El systems: Technician A says that when the engine is being cranked, the PCM relies only on the signals from the ECT to determine initial ignition timing. Technician B says that when an engine is initially started and is running at a predetermined speed, the PCM looks at several inputs, including engine speed, load, throttle position, and engine coolant temperature, and makes adjustments accordingly. Who is correct? a. Technician A b. Technician B c. Both A and B d. Neither A nor B

BuyFind

Automotive Technology: A Systems A...

6th Edition
Jack Erjavec + 1 other
Publisher: Cengage Learning
ISBN: 9781133612315
BuyFind

Automotive Technology: A Systems A...

6th Edition
Jack Erjavec + 1 other
Publisher: Cengage Learning
ISBN: 9781133612315

Solutions

Chapter
Section
Chapter 26, Problem 8ASRQ
Textbook Problem

While discussing El systems: Technician A says that when the engine is being cranked, the PCM relies only on the signals from the ECT to determine initial ignition timing. Technician B says that when an engine is initially started and is running at a predetermined speed, the PCM looks at several inputs, including engine speed, load, throttle position, and engine coolant temperature, and makes adjustments accordingly. Who is correct?

a. Technician A

b. Technician B

c. Both A and B

d. Neither A nor B

Expert Solution
To determine

Whether Technician A or Technician B is correct.

Explanation of Solution

During starting, when the engine is being cranked, the ignition timing is set by the PCM at a fixed value. This fixed value is used until the engine reaches a predetermined speed. When this speed is reached, the PCM looks at severa...

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Chapter 26 Solutions

Automotive Technology: A Systems Approach (MindTap Course List)
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