Operation CHARM: Car repair manuals for everyone.

System Diagram




Engine Controls Schematics (LS3)

ECM Power, Ground, MIL, and Serial Data





5V1, 5V2, and Low Reference Bus (1 of 2)





Low Reference Bus (2 of 2)






ECT, MAF/IAT, and MAP Sensors





Heated Oxygen Sensors





Electronic Throttle Controls






Fuel Injectors





EVAP Solenoids, FTP Sensor, and Fuel Pump Controls






Ignition Controls - Bank 1 (Odd) Ignition Coils






Ignition Controls - Bank 2 (Even) Ignition Coils






Ignition Controls - CKP, CMP, and Knock Sensors






Controlled/Monitored Subsystem References