Cadillac Workshop Service and Repair Manuals > Fleetwood Brougham V8-307 5.0L (1989) > Powertrain Management | Computers and Control Systems | Electronic Spark Timing <--> [Electronic Spark Control Module] | Component Information

Electronic Spark Timing <--> [Electronic Spark Control Module]|Description and Operation|Page 1641 > < Assembly Line Diagnostic Link (ALDL) Connector <--> [Data Link Connector]|Description and Operation

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Electronic Spark Timing: Description and Operation

ESC Wiring Diagram

The Electronic Spark Control (ESC) system module sends a voltage signal (8 to 10 volts) to the ECM when no spark knocking is detected by the ESC
knock sensor, and the ECM provides normal spark advance. When the knock sensor detects spark knock, the module turns "OFF" the circuit to the ECM
(0 volts). The ECM then retards EST to reduce spark knock.

Powertrain Management
Computers and Control Systems
Electronic Spark Timing <--> [Electronic Spark Control Module]
Component Information
Description and Operation

Cadillac Workshop Service and Repair Manuals

Fleetwood Brougham V8-307 5.0L (1989)

Powertrain Management Computers and Control Systems Electronic Spark Timing <--> [Electronic Spark Control Module] Component Information Description and Operation

Powertrain Management Computers and Control Systems Electronic Spark Timing <--> [Electronic Spark Control Module] Component Information Description and Operation

Powertrain Management
Computers and Control Systems
Electronic Spark Timing <--> [Electronic Spark Control Module]
Component Information
Description and Operation

Powertrain Management
Computers and Control Systems
Electronic Spark Timing <--> [Electronic Spark Control Module]
Component Information
Description and Operation