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

System Diagram



Engine Controls Schematics

Module, Power, Ground, MIL, and Serial Data (LY7)

Engine Controls Diagram 1:






5 Volt and Low Reference (LY7)

Engine Controls Diagram 2:






Engine Data Sensors-MAF and Engine Coolant Temperature Sensor (LY7)

Engine Controls Diagram 3:






CMP Sensors and Solenoids, Knock Sensors, and Crankshaft Position Sensor (LY7)

Engine Controls Diagram 4:






Engine Data Sensors-Oxygen Sensors (LY7)

Engine Controls Diagram 5:






Engine Data Sensors-Electronic Throttle Controls (LY7)

Engine Controls Diagram 6:






Bank 1 Ignition Coils (LY7)

Engine Controls Diagram 7:






Bank 2 Ignition Coils (LY7)

Engine Controls Diagram 8:






Fuel Pump and Injectors (LY7)

Engine Controls Diagram 9:






Evaporative Emissions and Fuel Tank Pressure Sensor (LY7)

Engine Controls Diagram 10:






Controlled/Monitored Systems (LY7)

Engine Controls Diagram 11: