Operation CHARM: Car repair manuals for everyone.

System Diagram



Engine Controls Schematics

Power, Ground, Serial Data, and MIL






5V1 and Low Reference Bus






5V2, 5V3, and Low Reference Bus






Engine Data Sensors - Pressure and Temperature






Engine Data Sensors - Throttle Controls






Engine Data Sensors - HO2S






Ignition Controls - Ignition Coils Bank 1






Ignition Controls - Ignition Coils Bank 2






Ignition Controls - Crankshaft Position, Camshaft Position, Knock Sensors and Camshaft Position Actuator Solenoids






Turbocharger Controls and Secondary Air Injection Pump






Fuel Controls - Fuel Injectors






Fuel Controls - Fuel Pump Control






Fuel Controls - EVAP and Fuel Economy Controls






Subsystem References