Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Electrical Diagrams



ENGINE CONTROLS SCHEMATICS

ECM Power, Ground, MIL, and Serial Data







5-Volt Reference Bussing







Low Reference Bussing







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







Heated Oxygen Sensors







Electronic Throttle Controls







Fuel Injectors and Fuel Pump Controls







EVAP Solenoids and FTP Sensor







Ignition Controls Bank 1 (Odd) Ignition Coils







Ignition Controls Bank 2 (Even) Ignition Coils







Ignition Controls - CMP, CKP, and KS Sensors







Controlled/Monitored Subsystem References







Locations: The locations for the Connectors, Grounds, Splices, and Grommets shown within these diagrams can be found via their numbers at Vehicle Locations. Locations