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

Module Power, Ground, Serial Data and MIL






5-Volt and Low Reference (1 of 2)






5-Volt and Low Reference (2 of 2)






Engine Data Sensor - Pressure, Temperature, and Throttle Controls






Engine Data Sensors - HO2S






Ignition Controls - Ignition System Coils 1, 3 and 5






Ignition Controls - Ignition System Coils 2, 4 and 6






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






Fuel Controls - Fuel Injectors and Fuel Pump Controls






Fuel Controls - Fuel Pump Flow Control







Fuel Controls - EVAP Controls and Manifold Tuning






Monitored/Controlled Subsystem References