Engine Controls Wiring Schematics

WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.

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

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Fig 2: 5-Volt and Low Reference Wiring Schematic (1 of 2)

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Fig 3: 5-Volt and Low Reference Wiring Schematic (2 of 2)

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Fig 4: Engine Data Sensors - Pressure, Temperature, and Throttle Controls Wiring Schematic

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Fig 5: Engine Data Sensors - HO2S Wiring Schematic

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Fig 6: Ignition Controls - Ignition System Coils 1, 3, and 5 (LLT) Wiring Schematic

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Fig 7: Ignition Controls - Ignition System Coils 1, 3, and 5 (LY7) Wiring Schematic

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Fig 8: Ignition Controls - Ignition System Coils 2, 4, and 6 (LLT) Wiring Schematic

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Fig 9: Ignition Controls - Ignition System Coils 2, 4, and 6 (LY7) Wiring Schematic

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Fig 10: Ignition Controls - Sensors Wiring Schematic

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Fig 11: Fuel Controls - Fuel Injectors, Pressure and Fuel Pump Controls (LLT) Wiring Schematic

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Fig 12: Fuel Controls - Fuel Injectors, Pressure and Fuel Pump Controls (LY7) Wiring Schematic

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Fig 13: Fuel Controls - EVAP Controls and Manifold Tuning Wiring Schematic

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Fig 14: Monitored/Controlled Subsystem References Wiring Schematic

Courtesy of GENERAL MOTORS CORP.