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Home >> Buick >> 2009 >> Lucerne CX, 3.9 1 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 3.9L - Introduction >> Schematic and Routing Diagrams >> Engine Controls Schematics

Engine Controls Schematics

Fig 1: Module Power, Ground, Serial Data, and MIL
GM2081300Courtesy of GENERAL MOTORS CORP.
Fig 2: 5-Volt and Low Reference
GM2081303Courtesy of GENERAL MOTORS CORP.
Fig 3: Engine Data Sensors - Pressure, Temperature, and Throttle Controls
GM2081305Courtesy of GENERAL MOTORS CORP.
Fig 4: Engine Data Sensors - Heated Oxygen Sensors
GM2081309Courtesy of GENERAL MOTORS CORP.
Fig 5: Ignition Controls - Ignition System
GM2081311Courtesy of GENERAL MOTORS CORP.
Fig 6: Ignition Controls - Sensors/Actuators
GM2081316Courtesy of GENERAL MOTORS CORP.
Fig 7: Fuel Controls - Fuel Injectors and Fuel Pump Controls
GM2081319Courtesy of GENERAL MOTORS CORP.
Fig 8: Fuel Controls - EVAP Controls
GM2081321Courtesy of GENERAL MOTORS CORP.
Fig 9: EGR, Secondary Air Injection (AIR)
GM2081324Courtesy of GENERAL MOTORS CORP.
Fig 10: Monitored/Controlled Subsystem References
GM2081324Courtesy of GENERAL MOTORS CORP.