Buick Workshop Service and Repair Manuals > Skyhawk L4-121 2.0L VIN P TBI (1984) > Relays and Modules | Relays and Modules - Powertrain Management | Relays and Modules - Ignition System | Electronic Spark Timing <--> [Electronic Spark Control Module] | Component Information | Testing and Inspection

Spark Control Relay > < Overboost Relay|Locations

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Fig. 6a ESC Performance Chart

Relays and Modules
Relays and Modules - Powertrain Management
Relays and Modules - Ignition System
Electronic Spark Timing <--> [Electronic Spark Control Module]
Component Information
Testing and Inspection

Spark Control Relay > < Overboost Relay|Locations