Engine Control System Wiring Schematics (LS3)

Fig 1: ECM Power, Ground, MIL, and Serial Data Wiring Schematic

Courtesy of GENERAL MOTORS CORP.

Fig 2: 5-Volt Reference Bussing Wiring Schematic

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Fig 3: Low Reference Bussing Wiring Schematic

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Fig 4: ECT, MAF/IAT, and MAP Sensors, VSS, and Stop Lamp Signals Wiring Schematic

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Fig 5: Heated Oxygen Sensors Wiring Schematic

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Fig 6: Electronic Throttle Controls Wiring Schematic

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Fig 7: Fuel Injectors Wiring Schematic

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Fig 8: EVAP Solenoids, FTP Sensor, and Fuel Pump Controls Wiring Schematic

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Fig 9: Ignition Controls Bank 1 (Odd) Ignition Coils Wiring Schematic

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Fig 10: Ignition Controls Bank 2 (Even) Ignition Coils Wiring Schematic

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Fig 11: Ignition Controls - CMP, CKP, and KS Sensors Wiring Schematic

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Fig 12: Controlled/Monitored Subsystem References Wiring Schematic

Courtesy of GENERAL MOTORS CORP.