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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

Describe the purpose of an ECT signal on an EFI system.

To determine

The purpose of an ECT signal on an EFI system.

Explanation

Engine coolant temperature (ECT) sensors help the PCM (power-train control module) to determine the engine’s average temperature. The main purpose of ECT signals is to send the temperature of the engine to the PCM based on which the EFI (electronic fuel injection) system controls the air-fuel mixture. This is because with the change in temperature the density of the intake air also changes causing difficulties in combustion due to change in actual air-fuel ratio...

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