Engine Controls Schematics

WARNING: This page is about a different car, the 2009 GMC Envoy and 2009 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

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

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Fig 2: Engine Data Sensors - 5-Volt and Low Reference

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Fig 3: Engine Data Sensors - MAF, Pressure and Temperature

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Fig 4: Engine Data Sensors - Oxygen Sensors

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Fig 5: Engine Data Sensors - Electronic Throttle Control

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Fig 6: Ignition Controls - Ignition Coils 1, 3, and 5

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Fig 7: Ignition Controls - Ignition Coils 2, 4, and 6

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Fig 8: Ignition Controls - Sensors

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Fig 9: Fuel Controls - Fuel Pump and Fuel Injectors

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Fig 10: Fuel Controls - EVAP Controls

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Fig 11: Device Controls - K18

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Fig 12: Controlled/Monitored Subsystem References

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