Operation CHARM: Car repair manuals for everyone.

Electrical Diagrams




Engine Controls Schematics (LS7)

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






Ignition Controls- Bank 1 (Odd) Ignition Coils






Ignition Controls- Bank 2 (Even) Ignition Coils






Ignition Controls- CMP, CKP, and Knock Sensors






Fuel Injectors






EVAP Solenoids, FTP Sensor, and Fuel Pump Controls





G302, G401, and G402

Controlled/Monitored Subsystem References