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)

Or, hide this message: temporarily or permanently

Electrical Diagrams



ENGINE CONTROLS SCHEMATICS

ECM Power, Ground, MIL, and Serial Data







5-Volt and Low Reference Bussing







MAP, ECT, and MAF/IAT Sensors







Heated Oxygen Sensors







Electronic Throttle Controls







Ignition Controls Bank 1 (Odd) Ignition Coils







Ignition Controls Bank 2 (Even) Ignition Coils







Ignition Controls Knock, CMP, CKP, Brake Booster Vacuum Sensors, and Valve Lifter Oil Manifold Assembly







Fuel Pump Controls







Fuel Injectors







EVAP Solenoids and FTP Sensor







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