Operation CHARM: Car repair manuals for everyone.

System Diagram



Engine Controls Schematics

ECM Power, Ground, MIL, and Serial Data






5-Volt Reference Bussing






Low Reference Bussing






ECT, MAF/IAT, and MAP Sensors, VSS, and Stop Lamp Signals






Heated Oxygen Sensors






Electronic Throttle Sensors






Ignition Controls Bank 1 (Odd) Ignition Coils






Ignition Controls Bank 2 (Even) Ignition Coils






Ignition Controls - CMP, CKP, and KS Sensors






Fuel Injectors






EVAP Solenoids, FTP Sensor, and Fuel Pump Controls






Controlled/Monitored Subsystem References