pontiac Workshop Repair Guides

Pontiac Workshop Service and Repair Manuals

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Electronic Spark Timing <--> [Electronic Spark Control Module]|Locations|Page 2641 > < Electronic Spark Timing <--> [Electronic Spark Control Module]|Locations|Page 2639

Firebird V8-305 5.0L VIN E (1992)

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Electronic Spark Timing: Description and Operation

Wiring Diagram For ESC System

Electronic Spark Control (ESC) is accomplished with a module that sends a voltage signal to the ECM. As the sensor detects engine knock, the voltage
from the ESC module to the ECM is reduced. This signals the ECM to retard the timing, if engine speed is over approximately 900 rpm.

Electronic Spark Timing <--> [Electronic Spark Control Module]|Locations|Page 2641 > < Electronic Spark Timing <--> [Electronic Spark Control Module]|Locations|Page 2639