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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System Diagram



ENGINE CONTROLS SCHEMATICS

ECM Power, Ground, Serial Data, and MIL






Engine Data Sensors - 5-Volt and Low Reference







Ignition Controls - CMP Sensors and Solenoids







Engine Data Sensors - Pressure, Temperature, MAF, VSS







Engine Data Sensors - Oxygen Sensors







Engine Data Sensors - Electronic Throttle Controls







Ignition Controls - Ignition System Bank 1







Ignition Controls - Ignition System Bank 2







Crankshaft Position (CKP) Sensor and Knock Sensors







Fuel Controls - Injectors and Pump







Fuel Controls - EVAP and Fuel Tank Pressure (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