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






5V1 and Low Reference Bus (1 of 2)





5V2, 5V3, and 5V4, and Low Reference Bus (2 of 2)







Engine Data Sensors - Throttle Controls






Engine Data Sensors - Pressure and Temperature






Engine Data Sensors - Heated Oxygen Sensors






Ignition Controls - Ignition System Coil 1, 3, and 5






Ignition Controls - Ignition System Coil 2, 4, and 6






Ignition Controls - CKP, CMP, and Knock Sensors, CMP Actuators






Fuel Controls - Fuel Injectors, FRP Sensor, and High Pressure Fuel Pump






Fuel Controls - Fuel Pump Flow Control






Fuel Controls - EVAP Controls and FTP Sensor





Monitored/Controlled Subsystem References