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
If it fails: lemon-manuals.org.ua

Or, hide this message: temporarily or permanently

Electrical Diagrams



Engine Controls Schematics

Module Power, Ground, Serial Data, and MIL






5V1 and Low Reference Bus






5V2, 5V3, and Low Reference Busses






Engine Data Sensors - Pressure, Temperature, and Throttle Controls






Engine Data Sensors - Oxygen Sensors






Ignition Controls - Bank 1 Ignition System






Ignition Controls - Bank 2 Ignition System






Ignition Controls - CKP/CMP/KS Sensors and CMP Actuator Solenoids






Fuel Controls - Fuel Injectors






Fuel Controls - Fuel Pump Flow Control






Fuel Controls - EVAP Controls






Subsystem References