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







MAF/IAT, MAP, and ECT Sensors







Heated Oxygen Sensors







Electronic Throttle Controls







Fuel Injectors and Fuel Pump Controls







EVAP Solenoids and FTP Sensor







Ignition Control Module







Camshaft, Crankshaft, Knock Sensors, and Camshaft Position Actuator Solenoid







Secondary Air Injection - NU3







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