System Diagram

Engine Controls Schematics ((L99/LS3))

Module Power, Ground, Serial Data, and MIL





B+ Bus (1 of 2)

5V1, 5V2, and Low Reference Bus (1 of 2)






Low Reference Bus (2 of 2)





Engine Data Sensors - Pressure and Temperature





Engine Data Sensors - Throttle Controls






Engine Data Sensors - Oxygen Sensors





Ignition Controls - Ignition Coils 1, 3, 5, and 7






Ignition Controls - Ignition Coils 2, 4, 6, and 8





Ignition Controls - Camshaft, Crankshaft and Knock Sensors, Camshaft Actuator





Device Controls - Displacement on Demand (L99)






Fuel Controls - Fuel Injectors






Fuel Controls - Fuel Pump Controls





G402, G403, and G404

Fuel Controls - Evaporative Emission Controls





B+ Bus (1 of 2)
F2U, F25U, F26U, F31U, F32U, F33U, and F34U Fuses

Controlled/Monitored Subsystem References