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

Input Devices

[Input Device]




Mass Air Flow Sensor





Crankshaft Position Sensor (NE Signal), Camshaft Position Sensor (SGC Signal)





Engine Coolant Temperature Sensor





Intake Air Temperature Sensor (AC)





Throttle Position Sensor (Closed Throttle Position Switch Included)





Heated Oxygen Sensor





Power Steering Pressure Switch





A/C Signal (A/C Amplifier)





Blower Signal (A/C Amplifier)





Brake Signal (Brake Switch)





Knock Sensor





EGR Valve Position Sensor





High Air Charging Pressure Zone Signal





Vehicle Speed Sensor





Manifold Absolute Pressure Sensor





Intake Air Temperature Sensor (D/C)





Intake Air Temperature Sensor (L/C)





Torque Reduction Request Signal (ABS/TCS Control Unit)





Rear Window Defroster Switch





Headlight Switch