Engine Controls Schematics

WARNING: This page is about a different car, the 2004 Saturn Ion 3, 2004 Saturn Ion 2, and 2004 Saturn Ion 1. However, it is still accessible from the selected car via links, so may be relevant.

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

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

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Fig 3: Engine Data Sensors Schematic - Pressure and Temperature

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Fig 4: Engine Data Sensors Schematic - HO2S

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Fig 5: Ignition Controls Schematic

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Fig 6: Fuel Delivery Schematic

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Fig 7: EVAP Controls and IAC Schematic

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Fig 8: Controlled/Monitored Subsystem References Schematic

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